appendix k4 - gcs · contrast, the existing corobrik structures occur on a level at approximately...
TRANSCRIPT
Appendix K4 Geotechnical Assessment
REPORT TO
SIVEST ENGINEERING DIVISION
ON A
GEOTECHNICAL INVESTIGATION
FOR THE
PROPOSED DEVELOPMENT
OF
AVOCA SOUTH
DRENNAN MAUD (PTY) LTDGEOTECHNICAL ENGINEERS &
Ref m 23317-B ENGINEERING GEOLOGISTS
MARCH 2014 Durban Head Office
68 Peter Mokaba Ridge, Tollgate, 4001
P.O. Box 30464, Mayville, 4058
Tel : +27 31 201 8992 Fax : +27 31 201 7920
www.drennanmaud.com
CONTENTS
Page ¹ 1
1. INTRODUCTION AND TERMS OF REFERENCE.. . . . . . . . . . . . . . . . . . . . Page -1-
2. INFORMATION SUPPLIED.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -1-
3. SITE DESCRIPTION AND DEVELOPMENT PROPOSAL. . . . . . . . . . . . . . Page -1-
3.1 Site Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -1-
3.2 Development Proposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -2-
4. FIELDWORK.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -3-
4.1 Excavation of Inspection Pits : IP’s 1 - 70. . . . . . . . . . . . . . . . . . . Page -3-
4.2 Dynamic Cone Penetrometer Testing : DCP’s 1 - 62. . . . . . . . . . . Page -3-
4.3 Sampling of Subsoil and Bedrock Materials. . . . . . . . . . . . . . . . . Page -4-
4.4 Bedding Plane Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -6-
5. GEOLOGY AND SOILS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -6-
5.1 Recent Alluvium.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -6-
5.2 Quaternary Dune Sand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -6-
5.3 Karoo Dolerite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -7-
5.3.1 Bedrock.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -7-
5.3.2 Associated Soil Horizons. . . . . . . . . . . . . . . . . . . . . . . . . . Page -7-
5.4 Vryheid Formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -8-
5.4.1 Bedrock.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -8-
5.4.1.1 Vryheid Formation Shale. . . . . . . . . . . . . . . Page -8-
5.4.1.2 Vryheid Formation Sandstone. . . . . . . . . . . Page -8-
5.4.2 Associated Soil Horizons. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -8-
6. LABORATORY TEST RESULTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -8-
6.1 Foundation Indicator Testing .. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -8-
6.1.1 Recent Alluvium : IP1, 51, 59. . . . . . . . . . . . . . . . . . . . . . . . Page -8-
6.1.2 Quaternary Dune Sand: S2. . . . . . . . . . . . . . . . . . . . . . . . . Page -9-
6.1.3 Colluvial Clay: IP44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -9-
6.1.4 Very Clayey Existing Fill Material: IP54. . . . . . . . . . . . . . . Page -9-
6.1.5 Residual Vryheid Formation Flanking Drainage
Lines: IP22, 26, 38, 45, 48.. . . . . . . . . . . . . . . . . . . . . . . . . Page -10-
6.2 Road Indicator, Mod AASHTO and CBR Testing. . . . . . . . . . . . . Page -10-
6.2.1 Existing Fill Materials: IP11 and 13. . . . . . . . . . . . . . . . . . Page -10-
6.2.2 Colluvium: IP18, 24, 31. . . . . . . . . . . . . . . . . . . . . . . . . . . Page -11-
6.2.3 Residual Dolerite: IP34.. . . . . . . . . . . . . . . . . . . . . . . . . . . Page -11-
6.2.4 Residual Vryheid Formation: IP23. . . . . . . . . . . . . . . . . . Page -11-
6.2.5 Vryheid Formation: IP20, 43, 47, S1. . . . . . . . . . . . . . . . . Page -12-
6.2.6 Karoo Dolerite: IP18, 19, 21, 34, 70. . . . . . . . . . . . . . . . . . Page -12-
CONTENTS (Cont.)
Page ¹ 2
7. GEOTECHNICAL ASSESSMENT.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -13-
7.1 Slope Stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -13-
7.2 Rock Hardness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -14-
7.3 Materials Assessment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -14-
7.3.1 Soils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -14-
7.3.2 Rock Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -15-
7.4 Anticipated Settlements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -15-
7.5 Fill Embankment Immediately North of Existing Head
Office Structures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -15-
8. RECOMMENDATIONS FOR DEVELOPMENT. . . . . . . . . . . . . . . . . . . . . . Page -16-
8.1 Earthworks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -16-
8.1.1 Cutting.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -16-
8.1.2 Filling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -17-
8.1.3 Excavatability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -18-
8.1.4 Spoiling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -19-
8.1.5 Bulking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -19-
8.2 Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -20-
8.3 Road Construction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -20-
8.3.1 Road Construction Materials.. . . . . . . . . . . . . . . . . . . . . . Page -20-
8.4 Founding of Structures and Surface Beds. . . . . . . . . . . . . . . . . Page -21-
8.4.1 Structures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -21-
8.4.2 Surface Beds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -22-
9. CONCLUSION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page -22-
APPENDIX 1 - INSPECTION PIT PROFILES (IP 1 - IP 70)
APPENDIX 2 - DYNAMIC CONE PENETROMETER TEST RESULTS
(DCP 1 - DCP 62)
APPENDIX 3 - LABORATORY TEST RESULTS
FIGURE 1 - SITE PLAN
Page -1-
REPORT TO SIVEST ENGINEERING DIVISION ON A
GEOTECHNICAL INVESTIGATION FOR THE PROPOSED
DEVELOPMENT OF AVOCA SOUTH
1. INTRODUCTION AND TERMS OF REFERENCE
Drennan, Maud and Partners (now Drennan, Maud (Pty) Ltd) was appointed by Investec
Property (Pty) Ltd, in a formal letter of appointment dated 6 February 2013, to assumeth
the position as the Geotechnical Consultant for the proposed Avoca South Development.
Drennan Maud’s brief was to establish the subsoil and bedrock conditions occurring on
the site to assist in the development planning and also to carry out the necessary subsoil
testing to facilitate the earthworks and platform designs. As a result of prolonged
negotiations with the landowners, the investigative work on Avoca South was put on hold
until early 2014.
The field investigation was carried out during late January and early February of 2014.
During this time, general geological mapping was carried out in conjunction with the
excavation of inspection pits, sampling of materials for laboratory testing and dynamic
cone penetrometer testing.
This report details the execution and findings of the field investigation, followed by a
geotechnical assessment and recommendations for the successful development of the
site.
2. INFORMATION SUPPLIED
For the purpose of this investigation, the following information was made available to
Drennan, Maud and Partners;
C Drawing titled “Corobrik South Platforms Rev. B” provided by SiVest- a surveyed
site plan with background orthophoto, indicating the most revised platform layout
available at the time.
3. SITE DESCRIPTION AND DEVELOPMENT PROPOSAL
3.1 Site Description
Figure 1 attached depicts the contoured site layout with respect to the proposed platform
development thereon.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -2-
The Avoca South site covers an area of approximately 157 hectares, a significant portion
of which hosts the existing Corobrik factories/offices/processing plant.
The site topography attains its most elevated in the east, where a northeast-southwest
trending spur overlooks the N2 at an elevation ranging from approximately 75 to
85m.a.s.l (m above sea level), this spur hosting the existing Eskom power lines. In
contrast, the existing Corobrik structures occur on a level at approximately 30m.a.s.l.
The adjoining ground between the Eskom power lines and Corobrik platform level takes
the form of a series of gently plunging spurs between which pan-shaped depressions
define the local drainage lines.
A substantial portion of the site, most notably the central to northeastern portion, has
had the soil overburden and soft brick shale removed such that a series of minor
quarries or mined-out surfaces now exist, exposing relatively hard rock at the surface.
Shale stockpiles ranging in height from approximately 8 to 12m occur on the central
portion of the site but these volumes are dynamic, being removed/added to on a daily
basis.
It is understood that mining has ceased on Avoca South, the brick shale material
currently utilised being derived from the Corobrik north and east sites.
Wetland buffers have been defined as the “open space/conservation” areas on Figure
1. The main wetland channel forms a perennial tributary to the Piesang River that flows
under the M25 along the western site boundary.
3.2 Development Proposal
The development layout plan used in compiling this report was provided by SiVest
Engineering Division and is referenced “Corobrik South Platforms Rev. B” (reworked as
Figure 1 attached). It is understood that the general platform and roads layout is likely
to be revised further.
It is proposed that over time, the majority of the site will be levelled to create industrial
platforms ranging in size from approximately 2 to 16ha.
The construction of these platforms will entail removing the tops of spurs and filling
across the intervening valley lines in a massive cut-to-fill earthworks operation.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -3-
The development will be conducted in phases, with the initial phase focussing on the
undeveloped northeastern portion of the site where development will not encroach on
the existing Corobrik structures. With time though, the existing structures will be
demolished to accommodate future phases of the proposed development.
4. FIELDWORK
In consultation with Mr G. Visser of SiVest, the geotechnical investigation at this stage
was restricted to the undeveloped portion of the site as dense paving and structures
upon the existing Corobrik platform would prohibit the necessary field testing at that
location.
Field test positions were recorded using a hand held GPS accurate to within 5m.
Approximate field test positions are indicated on our investigation layout plan, Figure 1
attached.
4.1 Excavation of Inspection Pits: IP1 - 70
A total of 70 inspection pits were mechanically excavated using the backhoe of a TLB
in order to examine and sample the subsoils and bedrock to a maximum depth of about
3m.
The logging of inspection pits was undertaken by an Engineering Geologist in
accordance with the recommended methodology set out by Jennings et al (1973).
The inspection pit profiles are included as logs in Appendix 1 attached.
4.2 Dynamic Cone Penetrometer (DCP) Testing: DCP1 - 62
A total of 62 DCP tests were conducted adjacent to inspection pits.
The light penetrometer probes were driven into the ground until refusal was met. The
rate of penetration of the apparatus (measured as blows per 300mm penetration) gives
an indication of the subsoil consistency, and the refusal depth in general corresponds
with weathered bedrock.
Note that in instances where rubble was encountered in the adjacent inspection pit,
refusal of the DCP probe may be attributed to such obstruction.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -4-
DCP test results are included in Appendix 2 of this report, whilst Table 1 is included as
a guideline to facilitate the interpretation thereof.
Note that these values are specific to Drennan, Maud and Partners test equipment and
should be used cautiously in general.
Table 1 : Guideline to Interpreting DCP Test Results
Non Cohesive Soils Cohesive Soils
¹ Of
Blows/300mm
Penetration
Subsoil
Consistency
¹ Of
Blows/300mm
Penetration
Subsoil
Consistency
<8 Very Loose <4 Very Soft
8 - 18 Loose 4 - 8 Soft
19 - 54 Medium Dense 9 - 15 Firm
55 - 90 Dense 16 - 24 Stiff
>90 Very Dense 25 - 54 Very Stiff
>54 Hard
4.3 Sampling of Subsoil and Bedrock Materials
Numerous representative samples of the prevailing subsoil and bedrock horizons were
obtained and submitted to Thekwini Soils Laboratory (Margate) to be subjected to a
combination of grading analyses, Mod AASHTO density and CBR testing.
The detailed laboratory results are included in Appendix 3 of this report for reference,
whilst Table 2 overleaf summarises the sampling locations and the laboratory testing
conducted.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -5-
Table 2 : Schedule of Subsoil Sampling and Laboratory Testing
Sample
Location
Depth (m) Material Description Laboratory Testing
Full
Grading
Mod
AASHTO
CBR
IP11 0 - 1.1 Fill Material X X X
IP13 0.8 - 2.4 Fill Material X X X
IP54 1.5 - 2.7 Fill Material X
IP1 0 - 3.3 Alluvium X
IP51 0.4 - 2.7 Alluvium X
IP59 1.0 - 2.8 Alluvium X
S2 0 ( at surface) Quaternary Dune Sand X
IP18 0 - 1.5 Colluvium X X X
IP24 0 - 0.7 Colluvium X X X
IP31 0 - 0.4 Colluvium X X X
IP44 0 - 0.9 Colluvium X
IP22 0.8 - 3.0 Residual Vryheid X
IP23 0.3 - 2.0 Residual Vryheid X X X
IP26 1.2 - 2.7 Residual Vryheid X
IP38 0.9 - 3.0 Residual Vryheid X
IP45 0.7 - 2.1 Residual Vryheid X
IP32 0.8 - 2.8 Residual Dolerite X X X
IP18 1.8 - 2.8 Dolerite X X X
IP19 0.6 - 2.0 Dolerite X X X
IP21 1.3 - 2.0 Dolerite X X X
IP34 1.3 - 1.9 Dolerite X X X
IP70 0.3 - 0.8 Dolerite X X X
S1 0 ( at surface) Vryheid Formation X X X
IP20 0.6 - 1.2 Vryheid Formation X X X
IP43 0 - 0.3 Vryheid Formation X X X
IP57 1.0 - 2.0 Vryheid Formation X X X
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -6-
4.4 Bedding Plane Measurements
Where exposed at the surface by quarrying operations, the orientation of bedding planes
within the Vryheid Formation was measured and recorded.
The bedrock dip and dip direction at these various locations are depicted on the site plan
Figure 1.
A general northwesterly to northerly (range 298 to 010), shallow (10 to 20 ) bedding dipo
was recorded.
5. GEOLOGY AND SOILS
The site plan Figure 1 has been marked up to indicate the general site geology as
recorded through profiling of inspection pits, rock exposures and surface soils.
With reference to Figure 1, the site geology is described below.
5.1 Recent Alluvium
Unconsolidated alluvium occurs within the well defined stream channels but also within
the broader depressions transecting the spurs. The horizon attains a thickness of up to
3 or 4m but this varies from location to location.
The material is generally a very moist, strongly mottled (grey/light yellow brown), fissured
sandy to silty clay. Locally it has a very high clay content.
Implicit in its mottled appearance is a tendency toward prolonged seasonal saturation.
5.2 Quaternary Dune Sand
This unconsolidated sedimentary unit is preserved only in a few patches across the site,
the remainder having been removed by erosion over the last 4 to 5 million years since
its deposition in the early Pliocene.
The material is exposed through erosion as a light beige to buff dune sand but the
undisturbed material is in fact a light grey mottled light brown clayey sand to sandy clay.
As with typical Berea Formation, rounded cobble and gravel accumulations occur toward
the base of this unit.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -7-
The very prominent erosion features observed within this material suggest that
dispersive clays occur within the matrix.
In addition to the above, stone-age tools were noted within the geological unit, however
the occurrence of these artefacts is being investigated separately by a heritage
specialist, Mr Frans Klopper.
5.3 Karoo Dolerite
Although the most significant sheets of dolerite have been mapped during this
investigation, there will with certainty be numerous smaller bodies exposed unpredictably
within the host rock during the earthworks.
5.3.1 Bedrock
The dolerite encountered within inspection pits and quarry exposures is typically a
completely to highly weathered, light brown to yellow or orange brown, very soft to soft
rock that is recovered from excavation as a closely packed, medium to coarse
subangular gravel in a coarse sand to locally clayey sand matrix. Few core stones were
encountered within the limited scope of the investigation.
At depth the dolerite is likely to grade into a highly to moderately weathered, grey-brown,
medium jointed, massive, medium hard rock. If and where tightly jointed, it may prove
problematic to excavate using conventional earth moving equipment.
5.3.2 Associated Soil Horizons
The red clay soils typically associated with Karoo dolerite are very poorly developed to
absent on this site. The prevailing soil cover comprises of a thin upper colluvial sandy
clay to clayey sand (<1m), beneath which occurs the weathered dolerite bedrock. The
upper 0,5m of dolerite is generally “completely weathered” and very clayey/silty,
thereunder is encountered more gravelly material as described above.
Locally, as in the case of IP32, relatively thick (2 to 3m) red clay or sandy clay soil
mantles the weathered dolerite.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -8-
5.4 Vryheid Formation
5.4.1 Bedrock
5.4.1.1 Vryheid Formation Shale
This rock unit may generally be classified as “shale” but in reality comprises of intimately
interbedded shale, siltstone and fine grained silty sandstone. The rock materials are
highly micaceous and as a result, are prone to absorption of water and subsequent
disintegration at the surface.
The slightly weathered to unweathered bedrock exposed in the quarries is typically very
dark grey, medium jointed, medium hard rock. Discreet thin lenses of highly weathered,
light orange to beige, soft to medium hard rock dolerite occurs with fair frequency.
5.4.1.2 Vryheid Formation Sandstone
On the southern to eastern portion of the site, most notably the elevated spurs
overlooking the N2, widely jointed, thickly bedded sandstone occurs which will be
recovered from excavation as large blocks and may require blasting or hard breaking
for removal.
5.4.2 Associated Soil Horizons
Where not stripped during the earthworks associated with brick making, the Vryheid
Formation is mantled by relatively poorly developed topsoil/subsoil horizons including an
upper colluvial horizon (typically 0,5 to 1m dark brown clayey sand) and a lower residual
horizon of strongly mottled (light yellow brown/grey) sandy clay to clayey sand (typically
0,5 to 1,5m thickness).
Within the broad depressions etched into the spur slopes, a more prominent and
significantly more clayey residual horizon occurs.
6. LABORATORY TEST RESULTS
6.1 Foundation Indicator Testing
6.1.1 Recent Alluvium: IP1,51,59
3 Samples were tested for Full Indicators only (Grading, Hydro, Atterberg Limits).
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
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The samples classified as A-7-5(24) to A-7-6(13) in terms of the AASHTO Classification
and as CH, MH and ML in terms of the Unified Classification. Clay content ranges from
approximately 50 to 80%, Liquid Limit from approximately 40 to 60%, PI from 22 to 30,
Linear Shrinkage from 8 to 13% and Grading Modulus from <0.1 to approximately 0.5.
In terms of the above, the material is considered highly unsuitable for use in earthworks
or as a shallow founding medium at depths where the influence of seasonal moisture is
pronounced. The material will be prone to volume changes with moisture fluctuations
and will prove very difficult to compact as a fill material.
6.1.2 Quaternary Dune Sand: S2
1 Sample was tested for Full Indicators only (Grading, Hydro, Atterberg Limits).
The sample classified as A-6(3) in terms of the AASHTO Classification and as SC in
terms of the Unified Classification. A clay content of 31% was recorded, a Liquid Limit
of 29%, a PI of 15%, Linear Shrinkage of 7 and Grading Modulus of 0.55.
In terms of the above, the material is considered a fair to poor general fill material and
is likely to be unsuitable for use as subgrade beneath road pavement layerworks.
6.1.3 Colluvial Clay: IP44
1 Sample was tested for Full Indicators only (Grading, Hydro, Atterberg Limits).
The sample classified as A-7-5(22) in terms of the AASHTO Classification and as MH
or OH in terms of the Unified Classification. It recorded a clay content of 66%, a Liquid
Limit of 51%, a PI of 19, a Linear Shrinkage of 10% and a Grading Modulus of 0.12.
In terms of the above, the material is considered highly unsuitable for use in earthworks
or as a shallow founding medium at depths where the influence of seasonal moisture is
pronounced. The material will be prone to volume changes with moisture fluctuations
and will prove very difficult to compact as a fill material.
6.1.4 Very Clayey Existing Fill Material: IP54
1 Sample was tested for Full Indicators only (Grading, Hydro, Atterberg Limits).
The sample classified as A-6(5) in terms of the AASHTO Classification and as CL in
terms of the Unified Classification. It recorded a clay content slightly in excess of 50%,
a Liquid Limit of 31%, a PI of 13, a Linear Shrinkage of 7% and a Grading Modulus of
0.47.
REF : 23317-B
REPORT TO SIVEST ENGINEERING DIVISION ON A GEOTECHNICAL
INVESTIGATION FOR THE PROPOSED DEVELOPMENT OF AVOCA SOUTH
Page -10-
In terms of the above, the material is considered a fair to poor general fill material and
will not be suitable for use as subgrade beneath road pavement layerworks.
6.1.5 Residual Vryheid Formation Flanking Drainage Lines: IP22,26,38,45,48
5 Samples were tested for Full Indicators only (Grading, Hydro, Atterberg Limits).
The samples classified as A-4(2) to A-7-6(21) in terms of the AASHTO Classification
and as SC to CL or ML in terms of the Unified Classification. A clay content ranging from
36 to 70% was recorded, Liquid Limit from 23 to 48%, PI from 8 to 20%, Linear
Shrinkage 4 to 10% and Grading Modulus 0.1 to 0.6.
Although variable, the material is in general considered highly unsuitable for use in
earthworks or as a shallow founding medium at depths where the influence of seasonal
moisture is pronounced. The material will be prone to volume changes with moisture
fluctuations and will prove very difficult to compact as a fill material.
6.2 Road Indicator, Mod AASHTO and CBR Testing
6.2.1 Existing Fill Materials: IP11 and 13
2 Samples were subjected to Full Indicators (Grading, Hydro, Atterberg Limits), Mod.
AASHTO density and CBR testing.
The samples classified as A-2-4(0) in terms of the AASHTO Classification and as GC
in terms of the Unified Classification. Clay contents of 6 to 9% were recorded, Liquid
Limit of 24 to 30%, PI of 8 to 9%, Linear Shrinkage of 5% and Grading Modulus of 2.05
to 2.31.
The samples recorded Mod AASHTO densities of 2187kg/m and 2107kg/m for IP113 3
and 13 respectively at optimum moisture content of approximately 8 to 10%. CBR values
range from 8 to 32% at 90% of Mod AASHTO to 11 to 44% at 95% of Mod AASHTO.
CBR swells of 0.58 (IP11 sample) to 1.61% (IP13 sample) were recorded and the
samples hence classify as G6 to worse than G10 for IP11 and 13 respectively, in terms
of TRH14 (1985).
The G6 sampled from IP11 was a mixture of dolerite gravel and Vryheid Formation
material, whereas the >G10 sampled from IP13 was entirely Vryheid Formation derived
fill.
In terms of the above, the more gravelly dolerite fill is likely to be highly suitable for use
in road pavement layerworks, whereas the Vryheid Formation derived fill is unlikely to
be suitable even as subgrade.
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6.2.2 Colluvium: IP18,24,31
3 Samples were subjected to Full Indicators (Grading, Hydro, Atterberg Limits), Mod.
AASHTO density and CBR testing.
The samples classified as A-2-4(0) through to A-7-5(2) in terms of the AASHTO
Classification and as SC, SM and CL in terms of the Unified Classification. Clay content
ranges from 10 to 31%, Liquid Limit from 25 to 54%, PI from 8 to 15, Linear Shrinkage
from 7 to 9% and Grading Modulus from 0.63 to 1.83.
Mod AASHTO densities of 1660 to 1891kg/m were recorded at optimum moisture3
contents of 11 to 19%. CBR values range from 2 to 11% at 90% of Mod AASHTO,
increasing to 5 to 15% at 95% Mod AASHTO. CBR swells ranging from 0.54 to 4.08%
were recorded.
In terms of TRH14(1985), the samples classify as worse than G10 (IP18 and 24) to G8
(IP31). The material is hence considered generally unsuitable as engineered fill or
subgrade material, though locally it is acceptable.
6.2.3 Residual Dolerite: IP34
1 Sample was subjected to Full Indicators (Grading, Hydro, Atterberg Limits), Mod.
AASHTO density and CBR testing.
The sample classified as A-7-5(20) in terms of the AASHTO Classification and as MH
in terms of the Unified Classification. It recorded a clay content of 61%, a Liquid Limit
of 58%, a PI of 26, a Linear Shrinkage of 13% and a Grading Modulus of 0.38.
A Mod. AASHTO density of 1558kg/m was recorded at an optimum moisture content3
of 19.9%. A CBR value of 2% was recorded at compaction of 90 to 95% Mod AASHTO.
CBR swell of 6.85% was recorded and the material hence fails to classify as G10 in
terms of TRH14(1985).
In terms of the above, the material is considered highly unsuitable for use in earthworks
or as a shallow founding medium at depths where the influence of seasonal moisture is
pronounced. The material will be prone to volume changes with moisture fluctuations
and will prove very difficult to compact as a fill material.
6.2.4 Residual Vryheid Formation: IP23
1 Sample was subjected to Full Indicators (Grading, Hydro, Atterberg Limits), Mod.
AASHTO density and CBR testing.
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The sample classified as A-4(2) in terms of the AASHTO Classification and as ML in
terms of the Unified Classification. It recorded a clay content of 32%, a Liquid Limit of
30%, PI of 7, Linear Shrinkage of 4% and Grading Modulus of 0.43.
A Mod AASHTO density of 1951kg/m was recorded at an optimum moisture of 11%.3
A CBR value of 1 to 2% was recorded for the compaction range of 90 to 95% Mod
AASHTO. A CBR swell of 4.46% was recorded and the material hence fails to classify
as G10 in terms of TRH14(1985).
In terms of the above, the material is considered unsuitable for use in earthworks or as
a shallow founding medium at depths where the influence of seasonal moisture is
pronounced. The material will be prone to volume changes with moisture fluctuations
and will prove very difficult to compact as a fill material.
6.2.5 Vryheid Formation: IP20,43,47, S1
4 Samples were subjected to Full Indicators (Grading, Hydro, Atterberg Limits), Mod.
AASHTO density and CBR testing.
The samples classified as A-1-a(0) to A-2-4(0) in terms of the AASHTO Classification
and as GM/GP - GC to GP-GW in terms of the Unified Classification. A clay content
range of 2 to 8% was recorded, with Liquid Limit ranging from 20 to 30%, PI from 4 to
8%, Linear Shrinkage from 1 to 4% and Grading Modulus from 2.1 to 2.7.
Mod AASHTO densities range from 1935 to 2089kg/m at optimum moisture of 6.5 to3
8.1%. CBR values range from 15 to 30% at 90% of Mod AASHTO, increasing to 24 to
43% at 93% of Mod AASHTO. CBR swell on all samples was below and generally well
below 1.5% and hence in terms of TRH14(1985) the samples classify as G7 to G5
materials.
In terms of the above, the Vryheid Formation in its fresh state is considered suitable as
an engineered fill and for use to upper selected layer or even sub-base layer in road
layerworks. Note that the G7 material represents the shale material whereas the G6-G5
material represents the excavatable sandstone.
6.2.6 Karoo Dolerite: IP18,19,21,34,70
5 amples were subjected to Full Indicators (Grading, Hydro, Atterberg Limits), Mod.
AASHTO density and CBR testing.
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The samples classified as A-2-4(0) to A-2-7(1) in terms of the Mod AASHTO
Classification and as GP-GM-GW to SM in terms of the Unified Classification. A clay
content range of 3 to 16% was recorded, with Liquid Limit ranging from 33 to 43%, PI
from 7 to 16, Linear Shrinkage from 5 to 10% and Grading Modulus from 1.7 to 2.8.
Mod AASHTO densities range from 1920 to 2137kg/m3 at optimum moisture of 8.5 to
14.6%. CBR values range from 13 to 44% at 90% of Mod AASHTO, increasing to 23 to
56% at 93% of Mod AASHTO. CBR swells generally range from 0.3 to 1.1%, although
the sample from IP18 recorded an excessive CBR swell of 1.72%. The samples hence
classify as G7 to G6 in terms of TRH14(1985), although a single sample classified as
worse than G10 due to slightly excessive CBR swell.
The material is considered generally suitable as engineered fill material, selected layer
and sub-base in road pavement layerworks.
7. GEOTECHNICAL ASSESSMENT
Due to the scale of earthworks required to level the proposed platforms, important
geotechnical factors such as rock hardness, stability and engineering properties will
have a significant influence on the cost of development.
7.1 Slope Stability
No evidence of active landslides or significant instability was encountered during this
investigation, however, the new fill embankments will impose a substantial load upon the
in-situ materials and founding of these fills into competent bedrock or firm in-
situ subsoils will be a critical aspect of the development.
With regard to the stability of proposed cuttings, the very thinly bedded nature of the
Vryheid Formation makes it susceptible to sliding along bedding planes that might
daylight in cut faces and dip shallowly out of the face. This susceptibility will be
exacerbated by the abundance of mica on partings between bedding planes.
The dip direction of the Vryheid Formation bedding planes is in a general northwesterly
to northerly direction and implicit in this, is that northwesterly/northerly facing cut
embankments (bedrock dipping out of slope) will be at greater risk for large scale rock
slides and will need to be carefully assessed during construction.
Mitigating the potential for instability will require in the first instance, assuming a cut and
fill embankment batter appropriate to the embankment materials and in the second
instance, making provision in the development budget for stabilising any locally unstable
zones exposed during the earthworks (stability berms, gabion walls or rock bolting).
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7.2 Rock Hardness
The spur overlooking the N2, which runs almost the entire length of the site, attains its
prominent posture as a consequence of the relatively hard bedrock within.
At numerous localities on this spur, inspection pits encountered shallow, hard refusal on
bedrock sandstone, siltstone or dolerite. It should be anticipated that much hard ripping
and blasting will be required to achieve platform levels on this portion of the site.
Similarly hard in places are the mined-out quarry floors. The Vryheid Formation exposed
within these quarry floors should be anticipated to require hard ripping from the onset,
prior to its removal. Unlike the elevated spur discussed above however, blasting is
unlikely to be necessary as the shale bedding structure is more conducive to ripping
than the thickly bedded, blocky sandstone occurring on the elevated spur.
7.3 Materials Assessment
7.3.1 Soils
The majority of soils on this site, most notably the alluvium and residual soils (residual
Vryheid Formation + residual dolerite), are considered highly unsuitable for use as even
general fill material. The high clay content (swelling clays in particular) will make them
prone to expansion and contraction with fluctuations in moisture content.
The colluvium (uppermost transported soil horizon) varies substantially in terms of both
its clay content and engineering properties. For planning purposes it too should be
considered unsuitable as a general fill or subgrade, though local more sandy/gravelly
exceptions may be encountered.
The Quaternary dune sand has a clay content slightly in excess of 30% and should not
be used as subgrade, however, it may be included judiciously within the general fill
material, either sandwiched between better layers or as a void-filler within coarser rock
fill.
The existing fill materials vary according to their origin (i.e. Vryheid Formation or dolerite)
and range from sub-base quality (G6) to being unsuitable as subgrade (>G10). In terms
of these observations, the existing fill materials are considered suitable for use as
general fill during development but may locally require blending for improvement.
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7.3.2 Rock Materials
The Vryheid Formation sandstone, which occurs almost exclusively on the elevated
eastern spur, will generally be recovered as large blocks unlikely to be of use as
anything other than rock fill unless it is first crushed. However, the upper 0,5 to 1,0m of
the material can generally be excavated as a sand/gravel and may be used in pavement
layer works up to subbase level. Due to the anticipated variability in grain size, clay
content etc., we would however recommend the material be used only to upper selected
layer level.
The Vryheid Formation shale is considered suitable for use as general fill and subgrade
through to upper selected layer in the new road design. Based on the apparent
abundance of more durable dolerite and sandstone for the road layerworks, we would
recommend the shale materials generally not be used in the road layerworks due to the
possibility of them deteriorating over time.
The Karoo dolerite occurring on this site constitutes a valuable source of road making
materials and in terms of the laboratory test results obtained thus far, should be
stockpiled for use in the upper road layerworks (to sub-base level) and more critical
portions of engineered fill platforms.
7.4 Anticipated Settlements
Soft in-situ soils were not significantly encountered on this site and it follows that the
most significant settlement will occur within the shale fill, this likely to take place over a
relatively long period of time post-construction.
It is generally accepted that the prevailing rock materials may undergo settlement of up
to 2% of the new fill thickness over some 5 to 10 years post-construction. Portions of the
fill where clay soils (overburden) are utilized are likely to incur further settlement.
If however, strict attention is paid to the construction of the new fills (refer to Section
8.1.2), it may be possible to limit the post-construction settlement to as little as 1,5 or
even 1% of the total fill thickness.
7.5 Fill Embankment Immediately North of Existing Head Office Structures
This platform approaches 300m in length and some 60m in width. It appears to be well
graded at the surface and the outer slopes of the fill embankment, although thickly
vegetated at the time of our field investigation, did not appear to bare any signs of on-
going instability.
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A solitary inspection pit excavated through the fill platform revealed a well-stratified fill
which the DCP test at that location showed to be relatively well compacted in spite of the
clayey materials utilised in its construction.
However, this fill embankment appears to been founded on a very moist and organic rich
sandy clay within which abundant stems of sugarcane still occur. Based on this
observation alone, the fill embankment should not be constructed upon unless further
detailed stability analyses are carried out.
The observations above are unlikely to affect the proposed development however, as
at this stage the existing embankment is to be entirely filled over rather than constructed
upon.
8. RECOMMENDATIONS FOR DEVELOPMENT
8.1 Earthworks
The large scale earthworks will need to be overseen by an experienced Geotechnical
Professional. Particular discretion will be required on those cut faces where the Vryheid
Formation bedding dips out of the slope.
Prior to commencing earthworks, all of the Quaternary Dune Sand (as designated on the
site plan) should be removed to stockpile. This material has undergone extreme erosion
in places and now has numerous voids reminiscent of small dolomite sinkholes,
suggesting it to be dispersive. The horizon is relatively poorly developed (estimated 1
to 3m thickness) and should not prove difficult to remove, however preventing its rapid
erosion from the stockpile is likely to prove problematic.
8.1.1 Cutting
Achieving the correct batter relative to the material types on this site will prove critical
for the long term stability of cut embankments.
In this regard, we distinguish between the following material types and recommended
cut batters;
C Unconsolidated Soils: This includes the colluvial and residual soil deposits,
irrespective of whether they are clayey or sandy. A general batter of 1 : 2 (26 )o
is recommended.
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C Completely to Highly Weathered Bedrock: For planning purposes this should be
taken as the upper 3m of bedrock. The material is very soft and friable. It
absorbs water readily and for this reason could be susceptible to a rotational
failure typically associated with clay soils. A general batter of 1 : 2 (26 ) iso
recommended.
C Moderately to Slightly Weathered Bedrock: This material causes earthmoving
equipment to scrape as it is excavated. It behaves as a competent rock and will
be recovered as angular blocks from excavation. A general batter of 1 : 1.5 (33 )o
is recommended. Stability benches cut into the slope will increase the factor of
safety.
It must be understood that a 1:1.5 batter in shaly bedrock will result in localised stability
issues, for example, patches of highly weathered, fractured rock or clayey material may
slough out of the cut face.
These localised problems will need to be identified and mitigated during the earthworks.
The cost of remedying these problems is likely to be significantly less than flattening the
batters to 1:2 and thereby losing a significant portion of the final platform area.
8.1.2 Filling
The shale materials prevailing on this site are likely to exhibit greater settlement than a
compacted granular fill material, largely due to the materials tendency to slake over time,
producing a clay/gravel material.
The other common reason for large settlement in shale fills is that the shale platelets
(flat, thin sheets of rock) are difficult to compact, often producing voids in the engineered
fill. To satisfactorily compact the shale, it is recommended that a very heavy (>25t)
sheep foot or tamping roller be used in conjunction with a smooth drum roller or
pneumatic tyred roller.
New fills should be placed on a work bench cut into competent bedrock and spread in
layers of 200mm loose thickness.
A compaction of 93% Mod AASHTO should be requested for the shale materials and
clay soils, whereas the granular dolerite fill and sandy soils should be compacted to at
least 95% of Mod AASHTO. The shale should ideally be compacted at its natural
moisture content as added water may be difficult to regulate.
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It must be ensured that the rock material used during filling is broken down sufficiently
by the compaction plant such that the required compaction is adequately achieved.
Boulders or blocks exceeding b of the loose layer thickness will result in poor
compaction and the development of voids if they cannot be broken down during
compaction. Of particular importance to the breakdown during compaction of the harder
shales, is the use of sufficiently heavy plant and very thin lifts of fill (200mm loose
thickness).
On structural portions of the platform, it is recommended that the upper 2m of fill be
engineered from the dolerite material which will achieve significantly higher densities and
is considered more durable than the shale.
The outer slopes of relatively minor (<10m) fill embankments must not exceed 1:2 (26 ).o
For fill embankments exceeding 10m height, the outer batter should be restricted to a
maximum of 1:2.5 (22 ). Cutting stability benches into the outer slope will aid stabilityo
significantly.
Future structures should be positioned no closer than 6m from the crest of fill
embankments as downslope creep associated with heave/shrinkage during wet/dry
cycles will occur.
At the toe of slopes or where crossing drainage lines (depressions), rockfill foundations
will be required if thick clays occur and the fill cannot be founded into competent
bedrock.
8.1.3 Excavatability
Excavatability as defined by SABS 1200D is very difficult to assess as the hardness of
materials may vary significantly over very short distances i.e. hard lenses of rock
occurring unpredictably within much softer rock.
It is expected that the dark grey Vryheid Formation shale occurring over much of the site
will respond well to ripping once “soft excavation” ceases to be feasible.
The widely jointed Vryheid Formation sandstone occurring within the elevated spur
overlooking the N2 is likely to require substantial “hard excavation” for removal.
To assist in the planning procedure, the following general comments are made but a
detailed excavatability/rippability assessment has not been carried out and would be very
difficult and costly to implement on a site of this extent.
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C Within the dark grey Vryheid Formation shale, as shown on the site plan, “soft”
to “intermediate” excavation after SABS 1200D should be expected to depths of
about 10 to 15m below natural (virgin) ground level, beyond which difficulty in
ripping may be encountered. Note that the slightly weathered rock exposed in
quarry areas has already had much of the excavatable/rippable material
removed and may classify as “intermediate” or locally “hard” excavation from the
onset.
C Within the dolerite bedrock, “soft excavation” is expected to a depth of 3 to 5m
below existing ground level, beyond which depth “intermediate” to “hard”
excavation should be expected.
C The widely bedded sandstone bedrock (also Vryheid Formation) occurring along
the ridge of the power lines may prove challenging to excavate from the onset.
It is uncertain exactly how thick these sandstone beds are but certainly, “hard
excavation” should be expected at least locally for cuttings into this ridge
exceeding about 3 to 5m height.
8.1.4 Spoiling
It is recommended that all the alluvial or residual clays excavated from the drainage
lines, as approximately indicated on the attached Figure 1, be removed to spoil. These
clay soils attain a thickness up to and locally in excess of 3m, occurring in a very moist,
locally wet state.
Note that although the material is recommended for spoiling, it could be used within
select portions of the fill but will add to the long term settlement at that location.
Furthermore, where removed from drainage lines, the clays will require drying and it may
be difficult to achieve a workable product.
8.1.5 Bulking
The more durable Vryheid Formation shale will have a significant bulking factor due to
it being removed from excavation as hard platelets which will not rest well when loaded.
A bulking factor of 20% should be used for planning calculations.
The gravelly dolerite materials should similarly assume a bulking factor of about 15 to
20% for planning purposes.
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8.2 Drainage
The fine grained materials prevailing on this site have a potential for dilation and
contraction during wetting and drying cycles. The long-term integrity of the platforms will
rely on the soil and rock materials therein being kept relatively dry all year round.
The inclusion of cut-off drainage at embankment crests and toes will be essential to
prevent the fills from becoming seasonally saturated. It will need to be ensured that the
drains are of sufficient capacity and that they are maintained on a regular basis.
Where new platforms are constructed over drainage channels or even the pan shaped
depressions within the spur faces, a herring-bone subsoil drainage layout should be
installed prior to construction as seasonal seepage is a certainty at these locations.
Stormwater from the roofed and paved areas of future structures will need to be
collected in drains or pipes to be released in a controlled manner into the main drainage
line or otherwise tied into the Municipal system.
8.3 Road Construction
No formal centre line survey was carried out for the proposed roads and their routing is
likely to be revised prior to construction.
Where new road fill embankments are constructed, these must be founded either into
bedrock or upon a suitably designed rock fill foundation if and where bedrock is
excessively deep.
The proposed access road superimposed on existing Toncoro Road should ideally
bridge the main drainage line immediately west of the entrance booms. A separate
geotechnical investigation should be conducted at this location once it has been decided
whether a culvert or bridge crossing is preferred.
8.3.1 Road Construction Materials
The subsoil and bedrock samples tested during this investigation have been assessed
in terms of their suitability for use in road construction and the results summarized in
Table 3.
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Table 3 : Schedule of Road Making Materials
IP ¹ Material TRH14
(1985)
SABS 1200
Subgrade Selected Layer Sub
BaseLower Upper
IP11 Fill Material G6 P P P P
IP13 Fill Material >G10 F F F F3 3 3 3
IP18 Colluvium >G10 F F F F3 3 1,3 1,3
IP24 Colluvium >G10 F F F F3 3 1,3 1,3
IP31 Colluvium G8 P P F F2,3 2,3
IP23 Residual Vryheid >G10 F F F F3 3 2,3 2,3
IP32 Residual Dolerite >G10 F F F F3 3 1,2,3 1,2,3
IP18 Dolerite >G10 F F F F3(s) 3(s) 3(s) 3
IP19 Dolerite G6 P P P P
IP21 Dolerite G6 P P P P
IP34 Dolerite G7 P P P F3(s)
IP70 Dolerite G6 P P P P
S1 Vryheid Formation G7 P P P F3
IP20 Vryheid Formation G6 P P P P
IP43 Vryheid Formation G6 P P P P
IP57 Vryheid Formation G5 P P P P
Notes : P = Pass F = Fail 1 = PI 2 = Grading Modulus 3(s) = CBR (swell)
The single dolerite sample that failed to classify (IP18) had a marginally excessive CBR
swell (1.72%) however it recorded CBR values commensurate with a G7 material.
8.4 Founding of Structures and Surface Beds
8.4.1 Structures
The founding solutions adopted for proposed structures will be dictated by the final
platform layout and sensitivity of the structures to movement.
As a preliminary guideline, the following general founding conditions can be expected;
C For portions of the platform cut into competent bedrock, a conservative bearing
capacity of 250kPa will be available for shallow strip footings or column base
pads.
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C For the transition from cut to fill, which will include the zone between competent
bedrock at the surface into the zone of shallow fill where bedrock is at depths of
less than about 2 to 3m, founding into bedrock will require reinforced ground
beams spanning pad footings.
C On the filled portion of platforms, where the depth to bedrock exceeds about 3m,
piled foundations will be required if founding in bedrock is a necessity.
Large structures spanning cut to fill will require a combination of shallow and deep
founding to avoid substantial differential settlements.
Smaller structures could be positioned entirely in cut, with the filled portion of platforms
being dedicated to parking, storage etc.
Smaller, flexible structures which may need to be founded entirely in fill could assume
a maximum allowable bearing pressure of 150kPa but would need to withstand
significant total and differential settlement as a consequence of the internal settlement
of the fill over time.
8.4.2 Surface Beds
For surface slabs on cut portions of the platforms, settlement is of no concern however,
as the slabs span onto the filled portions of platforms, the jointing and reinforcing will
need to be sufficient to accommodate differential settlement derived from the internal
settlement of the fill. As discussed under Section 7.4, the magnitude of settlement at a
given location upon the fill platform, post-construction, should be taken as 2% of the total
fill thickness i.e. 20mm per metre of fill.
9. CONCLUSIONS
The proposed development of this site as large-scale platforms is considered viable from
a geotechnical perspective and the site geology has been summarised on the attached
site plan Figure 1.
The Vryheid Formation occurring on the northern and central portions of the site is of
typical shaly nature and will prove difficult to compact in its hard, fresh state.
Consequentially, the placement of new fill in suitably thin layers (200mm loose
thickness) followed by compaction using appropriate very heavy plant should be
anticipated in order to minimize the long-term settlement within the fill.
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Fairly extensive subsoil laboratory testing has been carried out and detailed in this
report. The laboratory results are considered generally favourable, showing the majority
of rock materials to be suitable as engineered fill and road layerwork material. The
limited soil materials on the other hand are generally considered poor for use as
engineered fill.
Hard excavation (blasting) must be anticipated on the elevated eastern portion of the
site, which is underlain by relatively thickly bedded Vryheid Formation sandstone.
Subsoil drainage and founding improvement at the toe of new fills must be expected
where drainage lines are filled over.
At the onset of construction, more detailed geotechnical surveys should be carried out
along the toes of proposed fill platform embankments and the centre lines of proposed
road fill embankments, to determine the stability requirements thereof.
The Vryheid Formation underlying this site appears to dip shallowly in a general
northwesterly to northerly direction and for this reason, cuttings having the face
orientated in a general northwesterly/northerly direction will need to be carefully
assessed during construction.
Founding of structures will vary depending on a number of factors including the location
in the area, the location on cut/fill platforms and the type of structure proposed. As such,
future detailed geotechnical investigations are required for each individual development
once the details of the development are available.
_____________________________
M. D. COOPER Pr.Sci.Nat.
REFERENCE 23317-B DRENNAN MAUD (PTY) LTD
MARCH 2014 68 Peter Mokaba Ridge, Tollgate,
/mjh/kc DURBAN, 4001
APPENDIX 1
INSPECTION PIT PROFILES
(IP 1 - IP 70)
APPENDIX 2
DYNAMIC CONE PENETROMETER TEST
RESULTS (DCP 1 - DCP 62)
APPENDIX 3
LABORATORY TEST RESULTS
FIGURE 1
SITE PLAN
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
3.3m
SIVEST
COROBRIK SOUTH
HOLE No: IP1
Sheet 1 of 1
HOLE No: IP1
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
3.30
0.00Slightly moist to moist, grey brown to olive grey, locally speckled and streaked orange,
stiff, fissured to slickensided CLAY – (Alluvium).
Scale1:20
NOTES
1) Excavation terminated without refusal
2) No groundwater seepage encountered
3) Disturbed sample obtained from 0 – 3.3m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP1HOLE No: IP1
1
2
3
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP2
Sheet 1 of 1
HOLE No: IP2
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.20
0.00
0.30
Brown to grey, closely packed, subangular, soft clayey GRAVEL – (Pushed Over
Quarry Material).
Moderately weathered, grey to grey brown, medium jointed, thinly bedded, medium
hard rock micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP2HOLE No: IP2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP3
Sheet 1 of 1
HOLE No: IP3
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.50
0.00
0.70
Slightly moist, orange brown streaked and mottled grey, stiff, fissured gravelly CLAY –
(Residual Vryheid Formation).
Highly to moderately weathered, light grey to orange, very closely jointed, laminated
highly indurated silty SHALE – (Vryheid Formation). Induration suggests proximity of
dolerite.
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP3HOLE No: IP3
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.8m
SIVEST
COROBRIK SOUTH
HOLE No: IP4
Sheet 1 of 1
HOLE No: IP4
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.20
0.00
1.90
2.10
Slightly moist, light orange brown, soft to firm, fissured slightly gravelly to gravelly
CLAY – (Fill).
Moist to wet, dark grey brown, firm, fissured, fine to medium grained gravelly clayey
SAND – (Colluvium). Abundant subangular fine shale fragments.
Highly weathered, orange brown to grey, closely jointed, very thinly bedded, very soft
to soft rock micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated with dull refusal of the machine on soft rock
2) Fairly strong groundwater seepage encountered at 1.8m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP4HOLE No: IP4
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP5
Sheet 1 of 1
HOLE No: IP5
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
2.40
2.50
Slightly moist, dark grey brown, firm, slightly fissured sandy CLAY – (Colluvium).
Brown to orange brown, closely packed, very large, subangular sandstone
BOULDERS in a clayey sand matrix – (Boulder Fill). Boulders are up to 1000mm
diameter, likely spoil from adjacent quarry area.
Highly to moderately weathered, closely jointed, thinly bedded, soft to medium hard
rock micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Dull refusal of the machine
2) Boulders collapsing heavily into open excavation
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP5HOLE No: IP5
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP6
Sheet 1 of 1
HOLE No: IP6
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.50
0.00Highly to moderately weathered, brown, closely to medium jointed, laminated soft to
medium hard rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP6HOLE No: IP6
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP7
Sheet 1 of 1
HOLE No: IP7
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
0.90
Slightly moist, dark brown, firm, fissured sandy CLAY – (Fill).
Highly to moderately weathered, brown to grey, medium jointed, thinly bedded, soft to
medium hard rock micaceous SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP7HOLE No: IP7
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP8
Sheet 1 of 1
HOLE No: IP8
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
2.80
0.00Slightly moist, brown to dark brown, loose to medium dense, medium grained slightly
silty clayey SAND – (Fill). Contains in excess of 50% builders RUBBLE, comprising
almost exclusively of bricks.
Scale1:15
NOTES
1) Hole terminated with sidewalls collapsing heavily into the excavation
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP8HOLE No: IP8
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP9
Sheet 1 of 1
HOLE No: IP9
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
2.40
0.00Slightly moist, dark brown, medium dense becoming loose, medium grained clayey
SAND containing some 50 to 70% of hard, closely packed, medium hard rock shale
BOULDERS – (Boulder Fill). Boulders up to 800mm diameter.
Scale1:15
NOTES
1) Sidewalls collapsing heavily into the excavation
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP9HOLE No: IP9
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.8m
SIVEST
COROBRIK SOUTH
HOLE No: IP10
Sheet 1 of 1
HOLE No: IP10
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.90
0.00
1.90
2.00
Slightly moist, dark brown, loose to medium dense, fine to medium grained clayey
SAND with abundant RUBBLE – (Fill). Estimate 30 to 50% of brick rubble.
Very moist to wet, soft, fissured organic sandy to clayey SILT containing abundant
RUBBLE – (Fill). Reworked swamp deposit mixed with brick fragments.
Moderately to slightly weathered, dark grey, medium jointed, very thinly bedded,
medium hard rock micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Abrupt refusal on medium hard rock
2) Slow groundwater seepage from 1.8m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP10HOLE No: IP10
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.1m
SIVEST
COROBRIK SOUTH
HOLE No: IP11
Sheet 1 of 1
HOLE No: IP11
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.10
0.00
1.40
1.60
Slightly moist, light brown, medium dense, closely packed, subangular medium to
coarse sandy GRAVEL – (Fill). Mixture of weathered dolerite and Vryheid Formation.
Completely weathered VRYHEID FORMATION recovered as a light orange, medium
dense, slightly gravelly silty SAND – (Completely Weathered Vryheid Formation).
Highly to moderately weathered, brown becoming dark grey, medium jointed, very
thinly bedded medium hard rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Bulk disturbed sample obtained from 0 – 1.1m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP11HOLE No: IP11
1
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP12
Sheet 1 of 1
HOLE No: IP12
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
0.40
Slightly moist, dark brown, loose, fine to medium grained clayey SAND with abundant
RUBBLE – (Fill).
Brown to grey, highly to moderately weathered, medium jointed, very thinly bedded,
soft to medium hard rock micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP12HOLE No: IP12
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.8
2.4m
SIVEST
COROBRIK SOUTH
HOLE No: IP13
Sheet 1 of 1
HOLE No: IP13
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.80
0.00
2.40
2.80
Slightly moist, brown, grey and orange brown, closely packed, coarse subangular
SHALE GRAVEL – (Fill Material). Estimate 70% gravel in a clayey sand matrix.
Slightly moist, dark grey brown to olive brown, closely packed, subangular medium to
coarse sandy GRAVEL – (Fill). Vryheid Formation derived fill material.
Highly weathered, brown, closely to medium jointed, very thinly bedded, very soft to
soft rock sandy SILTSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated without refusal
2) Bulk disturbed sample obtained from 0.8 – 2.4m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP13HOLE No: IP13
1
2
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP14
Sheet 1 of 1
HOLE No: IP14
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
1.90
2.50
Slightly moist, brown to dark grey mottled orange, medium dense, closely packed,
coarse subangular shale GRAVEL – (Fill). Shale gravel with very abundant bricks and
rubble.
Slightly moist, red brown, tightly packed brick RUBBLE – (Fill).
Slightly moist, dark grey, closely packed, medium hard rock shale BOULDERS in a
clayey sand matrix – (Boulder Fill).
Scale1:15
NOTES
1) Machine unable to penetrate dense, hard boulders
2) Excavation sidewalls collapsing heavily
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP14HOLE No: IP14
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP15
Sheet 1 of 1
HOLE No: IP15
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00Moderately to slightly weathered, dark grey, medium jointed, laminated, medium hard
rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP15HOLE No: IP15
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP16
Sheet 1 of 1
HOLE No: IP16
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
0.70
Slightly moist, brown, loose, fine grained clayey SAND – (Topsoil/Colluvium).
Highly to moderately weathered, brown to grey, medium jointed, thihnly to very thinly
bedded, soft to medium hard rock micaceous sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Slow seepage encountered at 0.4m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP16HOLE No: IP16
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP17
Sheet 1 of 1
HOLE No: IP17
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.20
0.00
1.60
Slightly moist, dark brown, stiff, fissured sandy CLAY – (Colluvium). Abundant round
dolerite cobbles toward the base, also few sandstone boulders.
Completely to highly weathered, light brown, closely to medium jointed, thinly bedded,
soft to medium hard rock SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with dull refusal on soft rock
2) Sandstone boulders occasionally up to 1m diameter
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP17HOLE No: IP17
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.5m
1.8
2.8m
SIVEST
COROBRIK SOUTH
HOLE No: IP18
Sheet 1 of 1
HOLE No: IP18
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.50
0.00
1.80
2.80
Slightly moist, dark brown, soft to firm, fissured, fine grained slightly gravelly to
gravelly clayey SAND – (Colluvium). Subangular shale gravels concentrated towards
base.
Slightly moist, mottled dark brown and orange, medium dense, fine grained very silty
SAND – (Residual Dolerite).
Completely weathered DOLERITE recovered as a slightly moist, brown, closely
packed, subangular GRAVEL in a silty sand matrix – (Karoo Dolerite).
Scale1:15
NOTES
1) Excavation terminated without refusal
2) Bulk disturbed samples obtained from 0 – 1.5m and again from 1.8 – 2.8m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP18HOLE No: IP18
1
2
Bulk
Bulk
IMC
IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.6
2.0m
SIVEST
COROBRIK SOUTH
HOLE No: IP19
Sheet 1 of 1
HOLE No: IP19
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
2.00
Slightly moist, dark orange brown mottled dark grey, medium dense, fine to medium
grained clayey SAND – (Residual Dolerite).
Completely weathered DOLERITE recovered as a slightly moist, dark grey to orange,
closely packed, subangular medium GRAVEL in a coarse sand matrix – (Karoo
Dolerite).
Scale1:10
NOTES
1) Excavation terminated without refusal
2) Bulk disturbed sample obtained from 0.6 – 2.0m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP19HOLE No: IP19
1
2
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.6
1.2m
SIVEST
COROBRIK SOUTH
HOLE No: IP20
Sheet 1 of 1
HOLE No: IP20
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
1.20
1.40
Slightly moist, dark brown, loose, fine to medium grained very silty SAND – (Colluvium).
Occasional sandstone boulders up to 500mm.
Highly weathered, light orange brown to buff, closely jointed, medium bedded soft rock
SANDSTONE – (Vryheid Formation).
Highly to moderately weathered, light orange brown to buff, medium jointed, medium
hard rock SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Bulk disturbed sample obtained from 0.6 – 1.2m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP20HOLE No: IP20
1
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.3
2.0m
SIVEST
COROBRIK SOUTH
HOLE No: IP21
Sheet 1 of 1
HOLE No: IP21
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
1.30
2.00
Slightly moist, dark brown, soft to firm, fissured slightly gravelly sandy CLAY –
(Colluvium). Up to 20% fine dolerite gravel.
Slightly moist, dark orange mottled brown, firm, fissured slightly gravelly sandy CLAY –
(Residual Dolerite).
Completely weathered DOLERITE recovered as a slightly moist, brown to orange
brown to grey brown, closely packed, coarse subangular GRAVEL in a coarse sand
matrix – (Karoo Dolerite).
Scale1:10
NOTES
1) Excavation terminated without refusal
2) Bulk disturbed sample obtained from 1.3 – 2.0m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP21HOLE No: IP21
1
2
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.8
3.0m
SIVEST
COROBRIK SOUTH
HOLE No: IP22
Sheet 1 of 1
HOLE No: IP22
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.80
0.00
3.00
Slightly moist, brown, loose, fine to medium grained slightly clayey SAND – (Colluvium).
Slightly moist to moist, mottled light orange brown and grey, firm to stiff, fissured
sandy CLAY – (Residual Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated without refusal
2) No groundwater seepage encountered
3) Disturbed sample obtained from 0.8 – 3.0m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP22HOLE No: IP22
1
2
3
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
2.0m
0.3
2.0
SIVEST
COROBRIK SOUTH
HOLE No: IP23
Sheet 1 of 1
HOLE No: IP23
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
2.00
2.90
Slightly moist, brown, loose, fine to medium grained slightly silty clayey SAND –
(Colluvium).
Slightly moist to moist, light brown mottled and streaked orange and grey, firm,
fissured highly micaceous fine to medium grained very clayey and silty SAND –
(Residual Vryheid Formation). Frequent sandstone blocks toward the base.
Completely to highly weathered, orange to light brown, closely jointed, thinly bedded,
very soft to soft rock micaceous SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Dull refusal of machine on soft rock
2) Bedrock is wet on joint surfaces
3) Expect perched seepage at 2.0m
4) Bulk disturbed sample obtained from 0.3 – 2.0
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP23HOLE No: IP23
1
2
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.7m
SIVEST
COROBRIK SOUTH
HOLE No: IP24
Sheet 1 of 1
HOLE No: IP24
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
1.00
Slightly moist, dark grey brown, stiff, fissured gravelly CLAY – (Colluvium).
Highly to moderately weathered, olive to grey, medium jointed, very thinly bedded soft
to medium hard rock SILTSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Bulk disturbed sample obtained from 0 – 0.7m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP24HOLE No: IP24
1
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP25
Sheet 1 of 1
HOLE No: IP25
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
1.10
Slightly moist, dark grey brown, firm to stiff, fissured sandy CLAY – (Colluvium).
Highly weathered, olive brown to brown, closely to medium jointed, soft rock
micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Dull refusal of the machine on soft rock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP25HOLE No: IP25
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.2
2.7m
SIVEST
COROBRIK SOUTH
HOLE No: IP26
Sheet 1 of 1
HOLE No: IP26
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.20
0.00
2.70
Moist to very moist, dark olive brown, soft, fissured sandy CLAY – (Alluvium).
Moist, mottled light yellow brown and grey, stiff, fissured sandy CLAY – (Residual
Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated without refusal
2) Slow seepage encountered from 1.5m
3) Disturbed sample obtained from 1.2 – 2.7m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP26HOLE No: IP26
1
2 Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP27
Sheet 1 of 1
HOLE No: IP27
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.20
0.00
1.00
Slightly moist, very light beige, very loose fine to medium grained SAND –
(Gulleywash). Very recent erosion product of nearby quarry exposure.
Completely to highly weathered, dark grey brown, medium jointed, very thinly bedded,
very soft rock micaceous silty SANDSTONE – (Vryheid Formation)
Scale1:10
NOTES
1) Dull refusal on soft rock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP27HOLE No: IP27
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP28
Sheet 1 of 1
HOLE No: IP28
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
1.20
2.10
Slightly moist, very light beige, very loose fine to medium grained SAND –
(Gulleywash). Very recent erosion product of nearby quarry exposure.
Slightly moist, light yellow brown and grey, firm to stiff, fissured very clayey SAND –
(Residual Vryheid Formation).
Completely to highly weathered, dark grey brown, closely to medium jointed,
extremely soft to soft rock silty SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Dull refusal on soft bedrock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP28HOLE No: IP28
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP29
Sheet 1 of 1
HOLE No: IP29
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
0.80
1.00
Moist, brown, very loose, fine to medium grained slightly clayey SAND – (Colluvium).
Moist, mottled light yellow brown and orange, firm, fissured sandy CLAY – (Residual
Sandstone).
Moderately to slightly weathered, very light brown, medium to widely jointed, thickly
bedded, medium hard to hard rock SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Expect hard excavation through thickly bedded sandstone
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP29HOLE No: IP29
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP30
Sheet 1 of 1
HOLE No: IP30
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.50
0.00
0.80
1.10
1.20
Slightly moist, brown, very loose, fine to medium grained slightly clayey SAND –
(Colluvium).
Moist, mottled light yellow brown and orange, firm, fissured sandy CLAY – (Residual
Sandstone).
Completely to highly weathered, light yellow brown, closely jointed, extremely soft rock
micaceous silty SANDSTONE – (Vryheid Formation).
Highly to moderately weathered, light brown, medium jointed, medium bedded,
medium hard rock SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Sandstone recovered as oversized blocks
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP30HOLE No: IP30
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.4m
SIVEST
COROBRIK SOUTH
HOLE No: IP31
Sheet 1 of 1
HOLE No: IP31
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
0.70
0.90
Slightly moist, dark brown, very loose, fine to medium grained sandy CLAY –
(Colluvium).
Highly weathered, brown, closely jointed, massive, soft rock DOLERITE – (Karoo
Dolerite).
Moderately weathered, very light brown, medium jointed, medium bedded, medium
hard rock SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Bulk disturbed sample obtained from 0 – 0.4m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP31HOLE No: IP31
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.8
2.8m
SIVEST
COROBRIK SOUTH
HOLE No: IP32
Sheet 1 of 1
HOLE No: IP32
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.80
0.00
2.80
3.00
Slightly moist, red brown, firm, fissured sandy CLAY – (Colluvium).
Slightly moist, red, firm, fissured slightly sandy to sandy CLAY – (Residual Dolerite).
Completely weathered DOLERITE recovered as a slightly moist, light red brown,
medium dense, clayey gravelly SAND – (Karoo Dolerite).
Scale1:15
NOTES
1) No refusal met
2) Bulk disturbed sample obtained from 0.8 – 2.8m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP32HOLE No: IP32
1
2
3
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP33
Sheet 1 of 1
HOLE No: IP33
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.00
0.00
3.00
3.10
Slightly moist, dark brown, loose fine to medium grained clayey SAND – (Colluvium).
Slightly moist, mottled dark orange and light yellow brown, firm, fissured fine to
medium grained clayey SAND – (Residual Vryheid Formation). Contains occasional
hard dolerite boulders to 300mm diameter. Fairly abundant subangular sandstone
fragments toward the base.
Completely to highly weathered, light yellow brown, closely jointed, thinly bedded, very
soft rock SANDSTONE – (Vryheid Formation).
Scale1:20
NOTES
1) Excavation terminated without refusal.
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP33HOLE No: IP33
1
2
3
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.3
1.9m
SIVEST
COROBRIK SOUTH
HOLE No: IP34
Sheet 1 of 1
HOLE No: IP34
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
1.30
1.90
2.60
Slightly moist, dark brown, soft, fissured, fine to medium grained very clayey SAND –
(Colluvium).
Slightly moist to moist, mottled dark orange, light yellow brown and dark grey, firm,
fissured, medium grained clayey SAND – (Residual Dolerite). Occasional hard dolerite
boulders to 300mm diameter.
Completely weathered DOLERITE recovered as a very moist, medium dense, medium
grained gravelly SAND – (Karoo Dolerite).
Highly weathered, brown stained dark grey on joints, closely jointed, massive, soft to
medium hard rock DOLERITE – (Karoo Dolerite).
Scale1:15
NOTES
1) Excavation terminated with hard refusal of the machine
2) Bulk sample obtained from 1.3 – 1.9m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP34HOLE No: IP34
1
2
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP35
Sheet 1 of 1
HOLE No: IP35
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
0.60
1.00
Slightly moist, brown, loose, fine to medium grained clayey SAND – (Colluvium).
Slightly moist, light yellow brown and orange, firm, fissured clayey SAND – (Residual
Vryheid Formation).
Highly to moderately weathered, light brown to grey, medium jointed, very thinly
bedded, soft to medium hard rock sandy SILTSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:17..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP35HOLE No: IP35
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP36
Sheet 1 of 1
HOLE No: IP36
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
1.00
1.50
Slightly moist, dark brown, loose, fine to medium grained clayey SAND – (Colluvium).
Completely weathered DOLERITE recovered as a moist, orange brown, medium
dense, medium grained slightly gravelly SAND – (Karoo Dolerite).
Highly weathered, orange brown, closely jointed, massive, soft rock DOLERITE –
(Karoo Dolerite). Recovered as favourably graded gravel/sand mix.
Scale1:10
NOTES
1) Excavation terminated with dull refusal on soft bedrock
2) Very moist soil/rock contact – expect seasonal seepage at 1.0m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP36HOLE No: IP36
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP37
Sheet 1 of 1
HOLE No: IP37
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.50
0.00
1.10
1.30
Moist, brown, soft, fine to medium grained clayey SAND – (Colluvium).
Moist, mottled light yellow brown and grey, firm, fissured clayey SAND – (Residual
Vryheid Formation).
Highly to moderately weathered, light yellow brown to grey, medium jointed, medium
bedded, medium hard rock micaceous SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP37HOLE No: IP37
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.0m
0.9
3.0m
SIVEST
COROBRIK SOUTH
HOLE No: IP38
Sheet 1 of 1
HOLE No: IP38
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
0.90
3.00
Slightly moist, dark brown, loose, fine to medium grained silty SAND – (Topsoil).
Slightly moist, dark brown, loose, fine to medium grained SAND containing abundant
RUBBLE – (Brick Fill). Closely packed bricks and brick fragments.
Very moist to wet, streaked light yellow brown and grey, soft to firm, fissured sandy
CLAY – (Residual Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated without refusal
2) Seasonal perched seepage at 1.0m
3) Disturbed sample obtained from 0.9 – 3.0m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP38HOLE No: IP38
1
2
3
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP39
Sheet 1 of 1
HOLE No: IP39
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.20
0.00
2.00
2.30
Slightly moist, brown, loose, fine to medium grained silty SAND – (Topsoil).
Slightly moist, light yellow brown partly mottled orange, firm, fissured gravelly CLAY –
(Residual Vryheid Formation). Appears to have been disturbed in the past as it
contains abundant subangular and ferruginised sandstone gravels reminiscent of fault
breccia.
Highly weathered, grey brown, closely to medium jointed, very thinly bedded, very soft
rock micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated without refusal
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP39HOLE No: IP39
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP40
Sheet 1 of 1
HOLE No: IP40
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
1.20
1.70
2.00
Slightly moist, brown, loose, fine grained clayey SAND – (Topsoil).
Slightly moist, light yellow brown partly mottled dark orange, firm, fissured, fine to
medium grained clayey SAND – (Residual Vryheid Formation).
Highly weathered, grey to olive grey, very closely jointed, laminated, very soft rock
micaceous sandy SILTSTONE – (Vryheid Formation).
Highly weathered, orange brown, closely to medium jointed, thinly bedded, soft rock
micaceous silty SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Dull refusal of machine on soft rock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP40HOLE No: IP40
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP41
Sheet 1 of 1
HOLE No: IP41
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
0.70
Slightly moist, dark grey brown, stiff, fissured sandy CLAY – (Colluvium).
Highly to moderately weathered, brown, closely to medium jointed, very thinly bedded,
soft to medium hard rock micaceous sandy SILTSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP41HOLE No: IP41
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP42
Sheet 1 of 1
HOLE No: IP42
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
1.00
Slightly moist, dark grey, stiff, fissured and slickensided slightly gravelly CLAY –
(Colluvium). Contains few angular shale and sandstone gravels.
Highly to moderately weathered, dark grey brown, medium jointed, thinly bedded, soft
rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Dull refusal of machine on soft bedrock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP42HOLE No: IP42
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.3m
SIVEST
COROBRIK SOUTH
HOLE No: IP43
Sheet 1 of 1
HOLE No: IP43
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00Highly to moderately weathered, light brown to buff, closely to medium jointed, soft to
medium hard rock silty SANDSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Bulk sample obtained from 0 – 0.3m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP43HOLE No: IP43
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.9m
SIVEST
COROBRIK SOUTH
HOLE No: IP44
Sheet 1 of 1
HOLE No: IP44
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.90
0.00
2.00
Very slightly moist, dark grey, stiff, fissured and slickensided CLAY – (Colluvium).
Highly to moderately weathered, brown to dark grey, medium jointed, thinly to very
thinly bedded, soft to medium hard rock sandy SHALE – (Vryheid Formation). Indurated
and blocky joints in places, suggesting dolerite nearby.
Scale1:10
NOTES
1) Dull refusal of the machine on soft bedrock
2) Disturbed sample obtained from 0 – 0.9m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP44HOLE No: IP44
1
2
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.7
2.1m
SIVEST
COROBRIK SOUTH
HOLE No: IP45
Sheet 1 of 1
HOLE No: IP45
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
2.10
2.40
Slightly moist, brown to dark grey brown, stiff, fissured sandy CLAY – (Colluvium).
Slightly moist, olive brown to brown, mottled and streaked grey to orange, stiff,
strongly fissured and slickensided CLAY – (Residual Shale).
Moderately weathered, grey, medium jointed, very thinly bedded, soft rock silty
SHALE – (Vryheid Formation).
Scale1:15
NOTES
1) Dull refusal of the machine on soft bedrock
2) Disturbed sample obtained from 0.7 – 2.1m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP45HOLE No: IP45
1
2
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP46
Sheet 1 of 1
HOLE No: IP46
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.50
0.00
2.00
2.20
Slightly moist, dark brown, loose, fine to medium grained clayey SAND – (Colluvium).
Occasional hard dolerite boulders.
Slightly moist, mottled orange, grey and light yellow brown, stiff, fissured sandy CLAY –
(Residual Dolerite). Contains abundant highly fragmented and shattered siltstone
fragments (angular gravel and cobbles) toward the base.
Moderately weathered, light brown, medium jointed, medium bedded, soft to medium
hard rock SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP46HOLE No: IP46
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
2.3m
SIVEST
COROBRIK SOUTH
HOLE No: IP47
Sheet 1 of 1
HOLE No: IP47
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
2.00
2.30
2.70
Slightly moist, brown, loose, fine to medium grained silty SAND – (Colluvium).
Mottled orange, grey and light brown, firm, fissured slightly gravelly sandy CLAY –
(Residual Dolerite). Fairly numerous angular shale gravels.
Completely weathered DOLERITE recovered as a moist, light brown to light olive
brown, medium to coarse grained clayey SAND – (Karoo Dolerite).
Highly weathered, light brown, very closely jointed, soft rock DOLERITE – (Karoo
Dolerite). Recovered as coarse gravelly sand to sandy gravel.
Scale1:15
NOTES
1) Dull refusal of machine on soft bedrock
2) Anticipate perched seasonal seepage at 2.3m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP47HOLE No: IP47
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP48
Sheet 1 of 1
HOLE No: IP48
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.90
0.00
2.00
2.30
Slightly moist, brown, loose, fine to medium grained silty SAND – (Colluvium).
Moist, mottled grey and light brown locally red, stiff, fissured slightly sandy CLAY –
(Residual Vryheid Formation).
Completely to highly weathered, light brown, medium to widely jointed, medium
bedded, soft rock SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Dull refusal of the machine on soft bedrock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP48HOLE No: IP48
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP49
Sheet 1 of 1
HOLE No: IP49
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
1.20
Slightly moist, dark brown, loose, fine to medium grained clayey SAND – (Colluvium).
Numerous weathered shale fragments.
Highly to moderately weathered, dark brown to grey, closely to medium jointed,
laminated soft rock SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Dull refusal of machine on soft bedrock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP49HOLE No: IP49
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP50
Sheet 1 of 1
HOLE No: IP50
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.00
0.00
1.20
Slightly moist, brown, loose, fine to medium grained clayey SAND with occasional
rubble – (Fill). Half brick fragments.
Moderately to slightly weathered, very dark grey, medium jointed, thinly bedded,
medium hard rock micaceous sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP50HOLE No: IP50
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.4
2.7
SIVEST
COROBRIK SOUTH
HOLE No: IP51
Sheet 1 of 1
HOLE No: IP51
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
2.70
3.30
Slightly moist, dark grey brown, stiff, fissured sandy CLAY – (Colluvium).
Slightly moist, mottled grey and dark orange, stiff, strongly fissured CLAY – (Alluvium).
Moist, mottled light grey and yellow brown, stiff, fissured very micaceous sandy CLAY –
(Residual Vryheid Formation).
Scale1:20
NOTES
1) Excavation terminated without refusal
2) Disturbed sample obtained from 0.4 – 2.7
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP51HOLE No: IP51
1
2
3
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP52
Sheet 1 of 1
HOLE No: IP52
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
0.80
Slightly moist, brown, loose, fine to medium grained very silty SAND – (Gulleywash).
Erosion product from along quarry edges.
Highly to moderately weathered, dark brown to grey, medium jointed, very thinly
bedded, soft to medium hard rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP52HOLE No: IP52
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP53
Sheet 1 of 1
HOLE No: IP53
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.70
0.00
0.80
Slightly moist, brown, loose to medium dense, coarse grained gravelly SAND with
occasional hard dolerite BOULDERS – (Fill). Boulders few, up to 300mm diameter.
Moderately to slightly weathered, dark grey, medium jointed, very thinly bedded,
medium hard rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP53HOLE No: IP53
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.5
2.7m
SIVEST
COROBRIK SOUTH
HOLE No: IP54
Sheet 1 of 1
HOLE No: IP54
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.50
0.00
2.70
3.30
3.40
Slightly moist, brown, loose to medium dense, fine to medium grained slightly gravelly
clayey SAND with occasional rubble – (Fill). Few brick fragments.
Slightly moist, mottled and streaked light yellow brown and grey, stiff to very stiff,
fissured very sandy CLAY – (Fill). Residual Vryheid Formation derived fill.
Slightly moist, brown, loose to medium dense, fine to medium grained clayey SAND
with abundant RUBBLE – (Fill).
Highly to moderately weathered, dark grey brown, medium jointed, very thinly bedded,
soft rock sandy SHALE – (Vryheid Formation).
Scale1:20
NOTES
1) Dull refusal of the machine at depth
2) Disturbed sample obtained from 1.5 – 2.7m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP54HOLE No: IP54
1
2
3
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP55
Sheet 1 of 1
HOLE No: IP55
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.20
0.00
0.50
0.80
Slightly moist, red brown, medium dense, medium to coarse SAND – (Fill). Crushed
brick fill.
Slightly moist, light yellow brown streaked grey, stiff, fissured sandy CLAY – (Residual
Vryheid Formation).
Moderately to slightly weathered, dark grey, medium jointed, very thinly bedded, soft
to medium hard rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP55HOLE No: IP55
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP56
Sheet 1 of 1
HOLE No: IP56
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.90
0.00
1.40
Slightly moist, light beige, very loose, fine to medium grained SAND – (Gulleywash).
Eroded from nearby quarry exposure.
Moderately weathered, dark grey, closely to medium jointed, very thinly bedded, soft
to medium hard rock sandy SHALE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP56HOLE No: IP56
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.0
2.0m
SIVEST
COROBRIK SOUTH
HOLE No: IP57
Sheet 1 of 1
HOLE No: IP57
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
1.00
2.00
Slightly moist, dark brown, loose, fine to medium grained clayey SAND – (Colluvium).
Slightly moist, dark orange, brown mottled dark grey, medium dense, medium grained
slightly gravelly clayey SAND – (Residual Vryheid Formation).
Highly weathered, light beige, medium to widely jointed, medium bedded, soft to
medium hard rock SANDSTONE – (Vryheid Formation)
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
2) Disturbed bulk sample obtained from 1.0 – 2.0m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP57HOLE No: IP57
1
2
Bulk IMC
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP58
Sheet 1 of 1
HOLE No: IP58
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
0.70
2.20
Slightly moist, dark orange brown, loose, medium grained clayey SAND – (Colluvium).
Slightly moist, dark orange mottled light brown, loose to medium dense, medium
grained slightly clayey SAND – (Residual Dolerite).
Completely weathered DOLERITE recovered as a tightly packed, coarse subangular
GRAVEL – (Karoo Dolerite).
Scale1:15
NOTES
1) No refusal met
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP58HOLE No: IP58
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
1.0
2.8m
SIVEST
COROBRIK SOUTH
HOLE No: IP59
Sheet 1 of 1
HOLE No: IP59
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.40
0.00
1.00
2.80
Moist, dark grey brown, soft, fissured sandy CLAY – (Colluvium).
Moist, very dark grey, firm, fissured CLAY – (Alluvium).
Moist, light olive grey, streaked and speckled light brown, firm to stiff, fissured CLAY –
(Alluvium). Contains few transported rock gravels.
Scale1:15
NOTES
1) No refusal met
2) Disturbed sample obtained from 1.0 – 2.8m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP59HOLE No: IP59
1
2
Dist. FI
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP60
Sheet 1 of 1
HOLE No: IP60
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.90
0.00
1.60
1.90
2.40
Slightly moist, very dark grey brown, firm, fissured sandy CLAY – (Alluvium).
Moist, speckled dark grey and orange brown, firm to stiff, fissured CLAY – (Alluvium).
Occasional angular rock fragments.
Moist, mottled grey and light yellow brown, firm to stiff, fissured slightly gravelly CLAY –
(Residual Vryheid Formation).
Highly to moderately weathered, olive brown to dark grey, medium jointed, thinly to
very thinly bedded, very soft to soft rock SILTSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP60HOLE No: IP60
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP61
Sheet 1 of 1
HOLE No: IP61
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
2.10
2.40
Slightly moist, dark grey brown, stiff, fissured sandy CLAY – (Colluvium).
Slightly moist, mottled grey and light orange brown, stiff, fissured CLAY – (Residual
Vryheid Formation).
Highly weathered, light brown to grey, closely to medium jointed, very soft to soft rock
SILTSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Dull refusal of the machine on soft bedrock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP61HOLE No: IP61
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP62
Sheet 1 of 1
HOLE No: IP62
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
0.70
2.20
2.30
Slightly moist, grey brown, loose, fine to medium grained slightly gravelly clayey SAND
– (Colluvium).
Slightly weathered, very dark grey stained orange on joints, closely to medium jointed,
medium bedded hard rock indurated SHALE – (Indurated Vryheid Formation).
Completely weathered DOLERITE recovered as a slightly moist, red and grey,
medium to coarse grained clayey SAND – (Karoo Dolerite). Contains few thin lenses of
very hard Vryheid Formation shale. Numerous very clayey patches and localised
cobble/boulder pockets.
Highly weathered, light brown to grey, closely to medium jointed, massive, soft rock
DOLERITE – (Karoo Dolerite). Hard rock core stones up to 300mm diameter.
Scale1:15
NOTES
1) Excavation terminated with hard refusal of the machine on tightly packed core stones
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP62HOLE No: IP62
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP63
Sheet 1 of 1
HOLE No: IP63
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
1.00
2.80
Slightly moist, dark brown, loose to medium dense, fine to medium grained gravelly
SAND with occasional rubble – (Fill).
Slightly moist, mottled orange and dark grey, stiff, fissured sandy CLAY – (Residual
Vryheid Formation).
Highly weathered, light orange brown, very closely to closely jointed, thinly bedded,
soft rock silty SANDSTONE – (Vryheid Formation). Contains frequent siltstone lenses.
Scale1:15
NOTES
1) Excavation terminated without refusal
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP63HOLE No: IP63
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP64
Sheet 1 of 1
HOLE No: IP64
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.20
0.00
1.00
2.30
Slightly moist, dark brown, loose, fine to medium grained clayey SAND – (Colluvium).
Slightly moist, mottled light brown, orange and grey brown, stiff, fissured clayey SAND –
(Residual Vryheid Formation).
Completely to highly weathered, light brown, medium jointed, medium bedded, very
soft to soft rock coarse grained SANDSTONE – (Vryheid Formation). Recovered as a
dense, coarse grained sand.
Scale1:15
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP64HOLE No: IP64
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP65
Sheet 1 of 1
HOLE No: IP65
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
1.00
0.00
1.30
1.80
2.30
Slightly moist, dark grey brown, loose, fine to medium grained clayey SAND – (Fill).
Slightly moist, dark grey brown speckled orange, medium dense, fine to medium
grained clayey gravelly SAND – (Colluvium). Contains fine nodular ferricrete.
Moist, mottled dark brown, grey and orange, firm to stiff, fissured gravelly CLAY –
(Residual Vryheid Formation). Fairly abundant fine ferricrete nodules. Very abundant
fine shale fragments suggest disturbance in the past.
Highly to moderately weathered, light brown to beige, medium jointed, medium
bedded, soft to medium hard rock silty SANDSTONE – (Vryheid Formation).
Scale1:15
NOTES
1) Excavation terminated with hard refusal of the machine
2) Note ferricrete gravelly suggesting seasonal water-logging of soils
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP65HOLE No: IP65
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP66
Sheet 1 of 1
HOLE No: IP66
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
1.20
1.60
2.00
2.50
2.70
3.20
Slightly moist, brown, medium dense, medium grained slightly clayey SAND – (Fill).
Slightly moist, light yellow brown and grey, stiff, fissured, fine to medium sandy CLAY –
(Fill). Residual Vryheid Formation derived fill.
Slightly moist, grey brown, stiff, fissured sandy CLAY – (Fill). Frequent shale and
dolerite cobbles and localised brick rubble.
Slightly moist, mottled grey and light yellow brown, firm to stiff, fissured sandy CLAY –
(Fill). Residual Vryheid Formation fill.
Slightly moist, dark brown mottled light yellow brown and grey, stiff to very stiff,
fissured sandy CLAY – (Fill). Residual and colluvial soil mixture.
Slightly moist, dark grey mottled light brown to orange, firm to stiff, fissured sandy
CLAY – (Fill). Residual Vryheid Formation with few angular shale gravels.
Moist, dark grey brown, soft, fissured sandy CLAY – (Colluvium). Contains abundant
organic detritus including sugarcane stems, grass and roots.
Scale1:20
NOTES
1) Excavation terminated without refusal
2) Embankment material founded on soft, organic rich topsoil
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP66HOLE No: IP66
1
2
3
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP67
Sheet 1 of 1
HOLE No: IP67
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.20
0.00
0.70
1.80
3.00
Moist, brown, loose, fine to medium grained clayey SAND – (Topsoil).
Moist, mottled light yellow brown and grey, firm, fissured gravelly CLAY – (Fill).
Residual Vryheid Formation fill.
Moist, light grey brown locally mottled orange to red, coarse dolerite and sandstone
COBBLES and BOULDERS in a clayey SAND matrix – (Residual Dolerite). Numerous
sandstone fragments suggest the dolerite/sandstone contact zone.
Moist, dark orange locally speckled and mottled dark grey, medium dense, coarse
clayey SAND with abundant COBBLES – (Residual Dolerite).
Scale1:15
NOTES
1) Excavation terminated without refusal
2) Very poor quality rock materials expected at depth
3) Anticipated seepage through the more gravelly layers
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP67HOLE No: IP67
1
2
3
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP68
Sheet 1 of 1
HOLE No: IP68
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
0.60
1.00
1.40
1.90
2.30
2.60
Slightly moist, brown, loose, fine to medium grained clayey SAND with abundant
RUBBLE – (Fill). Brick and rock fragments.
Slightly moist, light yellow brown, closely packed, coarse subangular GRAVEL in a
coarse clayey SAND matrix – (Fill). Dolerite gravel fill.
Slightly moist, dark brown, loose, fine to medium grained clayey SAND with abundant
RUBBLE – (Fill). Brick and rock fragments.
Slightly moist, dark grey brown, firm to stiff, fissured sandy CLAY – (Colluvium).
Abundant roots.
Slightly moist, mottled light orange, red and grey, firm to stiff, fissured sandy CLAY –
(Residual Dolerite).
Moist, light orange brown, stiff, fissured sandy CLAY – (Residual Dolerite)
Highly weathered, light brown, very closely jointed, massive, soft rock DOLERITE –
(Karoo Dolerite). Recovered as a closely packed, coarse subangular gravel in coarse
sand matrix.
Scale1:15
NOTES
1) Dull refusal of the machine on soft bedrock
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP68HOLE No: IP68
1
2
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
SIVEST
COROBRIK SOUTH
HOLE No: IP69
Sheet 1 of 1
HOLE No: IP69
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.60
0.00
1.00
Slightly moist, brown to dark brown to red brown, loose, fissured clayey SAND with
abundant RUBBLE – (Fill). Brick and concrete fragments.
Highly to moderately weathered, brown to grey, closely to medium jointed, very thinly
bedded, soft to medium hard rock micaceous silty SANDSTONE – (Vryheid Formation)
Scale1:10
NOTES
1) Excavation terminated with hard refusal of the machine
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP69HOLE No: IP69
1
Smpl. Depth.
DRENNAN MAUD & PARTNERS
Consulting Civil Engineers and Engineering Geologists
0.3
0.8m
SIVEST
COROBRIK SOUTH
HOLE No: IP70
Sheet 1 of 1
HOLE No: IP70
Sheet 1 of 1
JOB NUMBER: 23317.BJOB NUMBER: 23317.B
0.30
0.00
0.80
1.60
Slightly moist, dark brown, stiff, fissured sandy CLAY – (Colluvium). Few gravels.
Highly weathered, very closely to closely jointed, soft rock DOLERITE – (Karoo
Dolerite). Recovered as a brown, closely packed, coarse angular GRAVEL and
COBBLE.
Highly weathered, brown, closely to medium jointed, very thinly bedded, very soft rock
SILTSTONE – (Vryheid Formation).
Scale1:10
NOTES
1) Excavation terminated without refusal
2) Bulk disturbed sample obtained from 0.3 – 0.8m
CONTRACTOR :MACHINE :
DRILLED BY :PROFILED BY :
TYPE SET BY :SETUP FILE :
NATLBNAM.C
M.CDMPSP.SET
INCLINATION :DIAM :DATE :DATE :
DATE :TEXT :
NANAJAN 2014
07/03/14 14:19..C:\DOTIN\SPMASTER.DOC
ELEVATION :X-COORD :Y-COORD :
dot.PLOT 5008 J&W D06B DRENNAN MAUD & PARTNERS
HOLE No: IP70HOLE No: IP70
1
Bulk IMC
Smpl. Depth.
VF
VFS
VF
VF
VFS
VFs
VFS
VF
VF
VF
VF
VF
VF
VFS
VFS
VF
EX.TONCORO ROAD
R102 P
2-1
R102 P2-1 ENTRANCEAND EXIT
OPEN SPACE/CONSERVATION
OPEN SPACE/CONSERVATION
OPEN ST
ORAGE O
NLY WITH
PERM
ISSION
FROM ES
KOM (PL
ATFORM
ING BY
INDVID
UAL SIT
E OWNER
TO ES
KOM SPECI
FICA
TION)
GENERAL BUSINESS
Y -28
00
X 3291600
Y -24
00
X 3291600Y -20
00
X 3291600Y -16
00
X 3291600Y -12
00
X 3291600
Y -28
00
X 3292000Y -12
00
X 3292000
Y -28
00
X 3292400Y -12
00
X 3292400
Y -20
00
X 3292800Y -16
00
X 3292800Y -12
00
X 3292800
WETLAND AND BUFFER
CONSERVATIONOPEN SPACE/
EPTLS
P585
COASTROAD
18m RO
AD
NORTH
COROBRIKEXISTING
40m ROAD
CURN
ICK D
LOVU
HIGH
WAY
EPTLS
WETLAND AND BUFFER TO BE DELINEATED
WETLAND AND BUFFER
COROBRIK SOUTHPARK 2
Existing Platform
EXCLUDED FIGURESHORT-TERM
SHORT-TERMEXCLUDED FIGURE
SHORT-TERMEXCLUDED FIGURE
SHORT-TERMEXCLUDED FIGURE
N2
TO DURBAN
ROAD 1
ROAD
2
24m RO
AD
ROAD
1
40m RO
AD
EPTLS
ROAD
5
TO BE DELINEATED
BUFFER TO BE DELINEATED
PROPOSED PLATFORMB.E.L.:38.00
PROPOSED PLATFORMB.E.L.:55.00
PROPOSED PLATFORMB.E.L.: 30.50
PROPOSED PLATFORMB.E.L.:57.50
PROPOSED PLATFORMB.E.L.:75.00
PROPOSED PLATFORMB.E.L.:65.00
PROPOSED PLATFORMB.E.L.:45.00
B.E.L.: 26.00PROPOSED PLATFORM
B.E.L.: 30.00PROPOSED PLATFORM
B.E.L.: 50.00PROPOSED PLATFORM
PROPOSED PLATFORMB.E.L.: 30.00
AREA : 27905m2
AREA : 22179m2
AREA : 21322m2
AREA : 83624m2
AREA : 87007m2
AREA : 157520m2
AREA : 86724m2
AREA : 85461m2
AREA : 143955m2
AREA : 34600m2
AREA : 126389m2
65
65
45
45
45
45
45
45
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
65
60
60
60
60
60
6060
60
60
60
60
60
25
25
25
25
65
65
65
65
65
65
65
65
65
65
65
55
60
60
70
65 65
70
70
85
85
85
85
55
55
5555
70
70
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
50
50
50
60
60 60
60
7070
75
75
75
75
75
75
75
75
75
75
75
75
75
70 70
45
45
45
45
45
70
70
70
60
60
75
75
80
80
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
45
70
80
45
45
45
45
45
45
45
45
45
45
45
45
55
55
55
55
55
55
55
55
55
55
55
55
25
25
25
25
25
25
25
25
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
85
85
40
80
80
55
55
70
85
85
65
65
65
30
30
30
30
30
50
30
30
30
70 70
75
75
80
90
90
25
25
25
25
25
55
75
75
75
75
55
35
40
40
50
50
50
70
70
25
80
80
8080
80
80
80
80
80
80
80
80
70
70
25
25
40
70
70 70
95
95
65
90
90
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
70
70
70
65
65
65
50
35
35
35
35
35
35
35
4545
40
40
70
70
70
70
70
70
70
70
70
70
55
55
65
65
15
15
50
50
50
50
35
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
35
35
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
55
55
55
55
55
55
55
55
55
55
55
55
55
55
55
55
55
55
55 55
40
40
65
80
80
80
80
80
60
60
55
55
65
65
50
65
65
50
40
40
40
20
40
40
30
6060
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
70
75
75
75
60
60
40
40
40
40
40
40
25
40
40
60
60
45
45
45
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
70
70
40
65
65
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
5050
35
35
35
35
35
55
55
55
55
25
25
50
50
50
35
35
35
50
50
50
50
50
50
50
50
50
50
50
50
20
20
20
20
20
20
20
20
20
20
20
20
55
25
25
25
25
25
30
30
30
25
25
60
60
20
20
2020
95
100
85
85
85
85
20
20
20
90
90
40
90
70
30
35
35
70
45
30
30
35
30
25
20
20
20
20
35
35
50
25
55
70
35
25
40
90
30
35
50
25
55
55
25
50
75
75
35
40
60
30
30
40
55
20
25
40
20
80
80
80
80
80
80
80
80
30
20
75
40
65
65
30
35
30
75
20
25
85
25
65
20
30
30
80
60
20
35
3040
25
80
25
25
40
55
75
85
20
70
30
20
25
30
20
25
25
35
75
60
70
30
80
20
20
20
40
20
80
30
40
20
30
25
40
50
25
40
20
25
45
40
20
20
40
SIVEST ENGINEERING DIVISION
AVOCA SOUTH
PROPOSED DEVELOPMENT
TITLE
PROJECT
CLIENT
REVISIONS
NO. AMENDMENT APPROVED DATE
DRAWING REFERENCE
DRAWING NO. TITLE
NOTES
CONSULTING ENGINEER
DATE:.....................
DESIGNED :
DRAWN :
PR. NO.:..................
SIGNATURE:................
REFERENCE NO. FIG. NO. REVISION
CHECKED :
SCALE :
DRENNAN, MAUD & PARTNERSConsulting Civil Engineers
68 Ridge RoadTollgateDURBAN4001Telephone: 031-201-8992
P.O. Box 30464MAYVILLE4058Telefax: 031-201-7920E-mail: [email protected]
APPROX. POSITION OF INSPECTION PITS/DYNAMIC CONE PENETROMETER TESTS
APPROX. POSITION OF INSPECTION PITS
ALLUVIUM OR THICK RESIDUAL CLAYS (>2m) INASSOCIATION WITH SEASONAL GROUNDWATERSEEPAGE
QUATERNARY DUNE SAND OVERLYING BEDROCKVRYHEID FORMATION OR DOLERITE AT ± 1 - 3m DEPTH
KAROO DOLERITE
VRYHEID FORMATION SHALE, SILTSTONEAND FINE GRAINED MICACEOUS SANDSTONE
VRYHEID FORMATION SANDSTONE WITH LOCALSILTSTONE
APPROX. POSITION OF SAMPLE BEDDING DIP/DIP DIRECTION
KEY
23317 B 1
65/DCP58 68/DCP61
66/DCP59
62/DCP55
32/DCP25
63/DCP5646/DCP39
48/DCP41
47/DCP40
39/DCP32
33/DCP26
34/DCP27
35/DCP28
40/DCP33 38/DCP31
20º/319
12º/010
16º/347
64/DCP5767/DCP60
17º/318
20º/319
11º/356
10º/318
18º/29812º/001
30/DCP23
41/DCP34
42/DCP35
22/DCP1521/DCP14
58/DCP51
59/DCP52
23/DCP16
20/DCP13
57/DCP5018/DCP12
45/DCP3843/DCP36
52/DCP4551/DCP44
60/DCP53
25/DCP18
24/DCP17
26/DCP18
61/DCP54
14/DCP9
15
16/DCP10
55/DCP4856/DCP49
29/DCP22
17/DCP11
19
1/DCP1
3/DCP2
24/DCP36
5/DCP4
7/DCP5
8/DCP6
9
49/DCP42
50/DCP4312
11/DCP710
53/DCP46
54/DCP47
S2
28/DCP21
27/DCP20
31/DCP24
13/DCP8
70
69/DCP62
37/DCP30
36/DCP29
40/DCP33
15
S1
S1