progress report chalala roads 11- october '11

8/12/2019 Progress Report Chalala Roads 11- October '11

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Progress Report No.11On the Design, Supervision and Construction of selected Chalala roads

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Contents

1.0 Project Summary ....................................................................................................................... 2

2.0 Introduction ............................................................................................................................... 3

3.0 Progress of Works ..................................................................................................................... 4

3.1 General State of Progress ...................................................................................................... 4

3.2 Drainage ................................................................................................................................ 6

3.3 Problems Encountered .......................................................................................................... 6

3.4 Program of Works ................................................................................................................. 7

3.5 Quality Assurance ................................................................................................................. 7

4.0 Project Resources ...................................................................................................................... 8

4.1 Labour Returns...................................................................................................................... 8

4.2 Plant Returns ......................................................................................................................... 9

5.0 Project Financial Assessment ............................................................................................... 100

6.0 Conclusion ............................................................................................................................ 111

7.0 Photographic Report......................................................................................................... 112


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1.0 Project Summary

Implementing Agency Road Development Agency

Contract No. TB/ORD/011/08

Client The Government of the Republic of Zambia

Paying Agency National Road Fund Agency

Beneficiary The Government of the Republic of Zambia

Contract location East of the Chilenje South suburb in the

City of Lusaka

Name of the Project Consulting services for the Design,

Supervision, and Construction/Upgradingof selected Chalala Roads, Musi-O-Tunya

Road extension, Part of Shantumbu Road

and South of Chilenje South newly

constructed road parallel to ZESCO pylons

Length 15 .3 Km

Main Contractor BCHOD ICU

Supervising Engineers BCHOD and Partners

Negotiated Contract value ZMK 36,896,223,626.00

Total variations Approved ZMK 12,649,733,154.97

New Contract Sum ZMK 49,545,956,781.25

Total Amount Claimed To Date ZMK 39,816,716,981.52

Date of award of the Contract 29 September 2008

Contract Start Date 9 October 2008

Project Delay due to Financial Constraints 24 months

Payment Currency ZMK

Construction Period 8 Months

Contract Completion Date 15th

July 2011

Reporting Period November 2011


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2.0 Introduction

The Government of the Republic of Zambia through the Road Development Agency

(RDA) intended to carry out the Design, Supervision and Construction/Upgrading of the

selected Chalala Roads (6.8 km), Musi-O-Tunya Road extension (2.7 km), part of

Shantumbu Road (3 km), and the newly constructed road parallel to Zesco pylons (2.7

km) south of Chilenje South, in Lusaka District to Bituminous Standard Class 1 based on

Integrated Construction Unit (ICU) method of works, using funds approved in the Annual

Work Plan (AWP) for 2008. Some of these funds would have to be carried over into the

subsequent years.

In January 2011 the ICU was given confirmation that funds were now available for theproject and that works should resume immediately. Work was initially slow to restart due

to the time of year (rainy season) and availability of Contractors equipment.

This report is the eleventh of scheduled progress reports produced by BCHOD

Consulting Engineers being the Supervision Engineers on this project, and covered the

period August to October 2011.


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3.0 Progress of Works

3.1 General State of Progress

Up to the reporting period all layer works had been completed. Additionally there hadbeen 9.1km of road surfaced, this partly consisted of approximately 1.9km of the

extension of Mosi-O-Tunya (entire lengthU1), the road running parallel to the ZESCO

pylons (U5) had been surfaced for approximately 1.0km, and part of Shantumbu road

from Pemba road (U4), approximately 900m. The table below outlines the major asphalt

surfacing work that had been carried out.

Table 1: Lengths of surfacing work carried out

Road Length of

surfacing

required (km)

Length

surfacing done

(km)

Per centum

done

U1 1.94 1.94 100%

U2 0.35 0.35 100%

U3 0.11 0.11 100%

U4 3.21 0.90 28.0%

U5 1.80 0.95 52.8%

U6 2.35 2.35 100%

U7 2.03 0.80 39.4%

U8 0.90 0.31 34.4%

U9 0.24 0.24 100%

U10 2.15 1.13 52.6%

The above tabulated work translated to an overall per centum length of 60% surfacing forthe Project.

Prime coat had also been applied on some of the remaining worked bases as follows:

On U4, 400m by half width U5, 800m by full width U7, 900m by half width


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The Revised Program of Works, Fig 1, shows the per centum achieved progress in

relation to the planned program for some major activities of the Project.


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3.2 Drainage

There had not been much progress made on the drainage works as at reporting time. The

Contractor had mainly focused on keeping the existing drains clear of obstructions and

debris, and continuing with the lining of the drains along Mosi-O-Tunya (U1). Theworkmanship along this drain had not been of the required standard and the Contractor

was instructed to repair sections and rework them, as shown in the photographic report.

3.3 Problems Encountered

The issue of constant traffic on the roads during construction was ongoing. The traffic

was urged to use the deviations adjacent to the roads when available in order to try and

stay out of the way of any construction vehicles. When roads needed to be crossed certaincrossing points were established for vehicles to get from one side of the road to the other.

The Contractor used sign and flagmen to divert traffic from construction zones. The

location of the current work areas however, did not allow for deviations due to land

restraints, this also slowed the rate of construction down a great deal as the roads had to

be worked in half widths so as to accommodate traffic.

Another issue that came up in the months leading up to the reporting period was the lack

of a reliable supply of cement and bitumen from suppliers. Cement is required for the

stabilisation of road base while bitumen functions as the adhesive between wearing

course and base layer and also as the binding medium in the surfacing. This unfortunately

caused the Contractor to fall behind schedule as the processing of base and application of

asphalt wearing course could not be carried out.


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3.4 Program of Works

The hitherto administered Program of Works was as submitted at the end of January 2011

when the instruction to recommence was issued. However there were stoppages

experienced in project activities due to unreliability of supply and uncertainties inavailability of cement, diesel and bitumen. Variation to the Work had also been proposed

in form of additional bellmouths. Hence the current Revised Program of Works, Fig 1. As

at report time a total of 9.1 kilometres of roads had been surfaced out of a total of

15.3km, this representing approximately 60% of total project road length. The remainder

of the Project roads had been constructed with pavement layers in readiness for priming

and eventual surfacing. Project completion was set for December 2011.

3.5 Quality Assurance

All works are carried out under the supervision of the contractors Site Agent on site. The

Engineer from BCHOD takes regular visits to site to ensure the contractor is working to

the standards specified. The construction materials and road layer densities are being

carried out by the contractors own laboratory. Every now and again tests are carried out

by an independent laboratory in order to confirm the results submitted by the contractors

laboratory as an additional form of quality assurance.

The Contractor has submitted compaction results that he has carried out on the Sub-base,

and the stabilised base on some surfaced sections of project roads. In addition he has

submitted the asphalt mix design used for the surfacing.


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4.0 Project Resources

4.1 Labour Returns

The Contractor mobilised a single earthworks team to site in late January 2011. This

team started working on the roads preparing the roads for various pavement layers. A

drainage team joined them on site during the middle of March 2011. And the surfacing

team arrived in June 2011. The Contractor had the following staff on site for the reporting

period.

Table 2: Labour

Item Description Number of

1 Site Agent 1

2 Foreman 1

3 Site Clerk 1

4 Operators 4

5 Drivers (These are hired so vary from day to day) 3

6 Bricklayers 6

7 General Workers 7

8 Guards 4


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4.2 Plant Returns

The Contractors plant that was mobilized to site is summarised in the table below.

Table 3: Plant On Site

Item Description Make/Model Number of

1 Grader CAT 140G 1

2 Grader Komatsu 1

3 Pneumatic Roller Sakai 1

4 15,000 litre Water Bowser Benz 1

5 10,000 litre Water Bowser Leyland 1

6 Tractor Ford 17 2 ton truck Toyota 1

8 Water Pump - 2

9 Mechanical Broom - 1

10 Bitumen Distributor - 1


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5.0 Project Financial Assessment

The current Financial Status of the Project has changed from the previous report. There

have been additional claims by the ICU team or payments made by the Client. The total

claim for the works comes to ZMK 39,816,716,981.52 out of the total project sum of

ZmK 49,545,956,781.25.

Chart showing expected expenditure versus actual.

The Table shows the amounts claimed to date on this project. Due to the erratic funding

available for this project and consequent reduced project activity there were insignicant

claims between April 2009 and January 2011. Subsequent Interim Payment Certificates

were substantial as they included major surfacing works and all the earthworks that were

done eventually.

0

10

20

30

40

50

60

1 2 3 4 5 6 7 8 24 25 26 27 28 29 30 31 32

Zmk

Billions

Month

expected

actual


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6.0 Conclusion

The Contractor re-mobilised to site during the months of January and February 2011. All

earthworks and layer works were completed as per specification.

In total 9.1km of road were surfaced out of the sanctioned 15.3km this representing

approximately 60% of the project. The Project deadline of 15th

July 2011 had not been

met due to factors outlined herein. The ICU Team was however endeavouring to seek and

utilize all available possibilities of completing the Project at the earliest time and to the

desired quality. The Contractor expected to complete the remaining works by December

2011, as per Revised Program Works, assuming a consistent supply of the key road

construction materials: bitumen and cement.

All work carried out up to the reporting period had been done according to specification.


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7.0 Photographic Report

Material processing for base stabi li sation Testing of stabi l ised road base

Road base with appli ed prime coat Appli cation of asphalti c concrete sur face

Asphal t being control led by workmen and r oll ed into thi ckness


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A mechanical broom removing Primed half width on U7

deleterious mater ial on U7 road base

Asphal t being rol led to thi ckness A sur faced hal f width

A section on U1 with completed A spot on U8 with electr ic poles requir ing

sur facing but poorly done drainage barr iers

progress report chalala roads 11- october '11

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