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BILL NO. 2 GENERAL CONDITIONS & PRELIMINARIES

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Page 1: BILL NO. 2 GENERAL CONDITIONS & PRELIMINARIES...A B C BILL NO. 2 GENERAL CONDITIONS AND PRELIMINARIES GENERALLY The following clauses are given for the guidance of the contractor in

BILL NO. 2

GENERAL CONDITIONS & PRELIMINARIES

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BILL NO. 2

GENERAL CONDITIONS AND PRELIMINARIES

GENERALLY

The following clauses are given for the guidance of the contractor in the preparation of his

tender.

The contractor must allow in his tender any sum he may consider necessary in respect of these

clauses by way of pricing the clauses.

In the case of a contractor leaving un-priced any preliminary items then he shall be deemed to

have considered that the rates for the remaining items in the bills of Quantities are sufficient to

perform the services and obligations in the items not priced without charge.

PRELIMINARY PARTICULARS

Definition of items

Terms throughout these bills of quantities shall be interpreted as follows:-

(i) Employer: The term ‘the employer’ wherever used hereinafter and in all

contract documents shall be deemed to mean The Group Managing Director

CPF Financial Services Ltd, CPF House, 7th Floor, Haile Selassie Avenue, P. O. Box

28938, 00200 Nairobi

(ii) Civil Engineers: The term ‘the Civil Engineers’ wherever used hereinafter and in all

contract documents shall be deemed to mean Abba & Wandui Engineers P.O. Box

17085 00100, Nairobi Whenever The Term ‘Architect’ Is used in all contract

documents it shall be construed to mean the ‘Principal consultant’

(iii) Quantity Surveyor: The term ‘the quantity surveyor’ wherever used

hereinafter and in all contract Documents it shall be deemed to mean

Addconsult Surveyors, P.O. Box 3427-00506, Nairobi.

(iv) Contractor: The term ‘the contractor’ wherever used hereinafter and in all

contract documents shall mean the person or persons, partnership, firm or

company whose tender for the works has been accepted and who has or have

signed this contract and shall include his or their heirs, executors, administers,

assigns, and duly appointed representatives.

(v) Works: The term ‘the works’ wherever used hereinafter and in all contract documents shall mean all or any portion of the work, materials and articles

wherever the same are being manufactured or prepared which are to be used in the

execution of the contract, and whether the same be on the site of the buildings or

not. It shall also be deemed to include all variations, the work of all sub-

contractors and any variations.

(vi) Contract: The term ‘the contract’ wherever used hereinafter and in all

contract documents shall mean the tender, Articles of Agreement and

conditions of contract, form of bond, drawings, general specification and

priced and signed Bills of Quantities.

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Definition of terms (contd.)

(vii) Contract drawings: The term the ‘contract drawings’ wherever used

hereinafter and in all contract documents shall be deemed to imply the

drawings referred to these bills of Quantities.

(viii) Site: The term ‘ the site’ wherever used hereinafter and in all contract

Documents shall mean the lands and other places on, under, in or through

which the works are to be executed or carried out and any other lands or

places provided by the employer for the purposes of the contract.

(ix) Approved, Directed and selected: The terms ‘ approved directed and

selected’ wherever used hereinafter and in all contract documents shall

mean the approval, direction and selection of or by Architect

(x) Singular and plural: Words importing the singular only wherever used

hereinafter and in all contract documents shall also include the plural and vice versa where the context requires.

(xi) Specified: The term ‘specified’ wherever used hereinafter and in all

contract documents shall mean as specified in the general conditions and

preliminaries and/or preambles to treads of these bills of Quantities or in

more than one of these documents.

(xii) Fix only: The term ‘fix only’ shall mean take delivery at the nearest supply

point (unless otherwise stated), pay all demurrage charges, load, transport

to site, unload, store unpack, and assemble as necessary, distribute to

position, hoist and fix in position.

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Abbreviations

Throughout these Bills, units of measurement and terms are abbreviated and shall be

interpreted as follows:-

LM: Shall mean Linear Metre

SM: Shall mean Square Metre

CM: Shall mean Cubic Metre

Kg: Shall mean kilogramme

MM: Shall mean Milimetre

No: Shall mean Number

B.S: Shall mean the British standards specifications published by the

British Standards Institution, 2 park street, London W.L

Ditto: Shall mean the whole of the preceding description except as

qualified in the section in which it occurs. Where it occurs in

rackets it shall mean the whole of the preceding description

which it is contained within the appropriate in brackets.

b.s.m: Shall mean both sides measured

m.s: Shall mean measured separately

P.C: Shall mean prime cost

75mm: Shall mean exceeding 75mm but not exceeding 150mm and all

to items described in this manner shall be similarly construed

150mm

girth

A small: Shall mean any pipe exceeding 100mm internal diameter

Pipe

A large: Shall mean any pipe exceeding 50 mm but not exceeding 100 mm pipe pipe in diameter

An extra : Shall mean any pipe exceeding 100 mm internal diameter

Large

pipe

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Description of site

Location

The site is located on plot Lr. No. EMU/BLOCK 2/50/1 ELDORET.

Access

Access to the site is via the existing main entrance to AIC KIJABE Hospital. Visiting the site

The contractor before tendering is recommended to visit the site of the works to satisfy

himself as to the facilities for access and other site conditions under which the works will have

to be carried out.

The Contractor shall be assumed to have acquainted himself with the site as to its nature and

position, means of access, etc. and no claim in this connection will be allowed.

No claim will be allowed for traveling or other expenses which may be incurred by the

contractor in visiting the site or preparing the tender for the works.

Restriction on the Contractor’s use of site

The contractor will be required to agree the sitting of all temporary works with the consultant

before the commencement of the contract.

The contractor shall not use the site or any part thereof for any purpose other that that of

carrying out the contract

Sleeping accommodation will not be permitted on the site.

Maintenance of the existing right of way

The contractor will be required throughout the contract to maintain and keep from obstructing

the existing way.

Existing property

The contractor shall take every precaution to avoid damage to all existing property including

buildings, roads, cables, drains, and other services and he will be held responsible for and

shall make good all such damage arising at his own expense to the satisfaction of the

consultant.

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Description of the works

The works to be executed under the contract comprises of contraction of a parking bay with a

plinth area of approximately 2550 Square metres together with associated drainage

infrastructure and lighting.

Progress Schedule

The contractor shall within a reasonable period from acceptance of the tender, and prior to the

signing of the contract, provide approved detailed progress charts showing clearly the

anticipated order and rate of progress of the works and sustaining the stated time for

completion. Such progress charts shall be agreed with the Architect before commencing

operations on the site. Two copies shall be forwarded to the Architect and one copy retained in

the site office and updated from time to time as required.

CONTRACT DOCUMENTS

Guaranteed Bond (Clause No.16)

The contractor shall enter into a contract Guarantee Bond with an approved Bank, insurance

Company or financial institution of the contractor’s choice by which they shall be jointly and

severally bound to the employer in a sum equivalent to 10% of the contract price conditioned

for the due fulfillment of the terms and conditions of the contract.

That in the event of the said Bank insurance Company or financial institution being prepared

to join with the contractor in entering into a contract Guarantee Bond as aforesaid, the

employer will pay premiums due to the said Bank there-under and no sum in respect thereof

shall be included by the contractor in his contract price or added to his account with the employer.

That the Contractor shall furnish in confidence to the said Bank information as to the

contractor’s financial position and any other relevant information reasonably required by

them.

Clause 16.2 covering payment guarantee by the Employer shall be deleted

The Contractor shall allow for paying all stamped charges in connection with the Bond

Law Governing contract

The contractor shall in all respects be familiar with and operate within the Laws of Kenya

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Form of contract

The Contractor will be required to enter into a contract which will be the current form of

agreement and schedule of conditions of building contract published by the Joint building

council of Kenya (1999 Edition. With Quantities) excepting in so far as varied hereinafter .The above form is published with the sanctions of The Architectural Association of Kenya

and The association of Building and Civil Engineering Contractors.

The Contractor’s attention is called to the following clauses of the conditions of contract,

which shall be read as incorporated herein, and he shall allow any sums whish he considers

necessary for the carrying out of and observance of such conditions together with sub-clauses

used in amplification.

Contractor Obligations Clause No.4

Architect’s instructions Clause No. 22

Contract Documents Clause No. 7

(i) A list of drawings from which the contract Bills have prepared is appended

(ii) Before submitting tenders, Contractor’s may examine all drawings (which may be

seen at the offices of the Architect and Quantity surveyor during normal office hours)

and satisfy themselves regarding all details, as no claim by reason of ignorance in

this concession will be entertained.

(iii) Figured dimensions will be used in preference to scales mentioned on or attached to

any drawing.

(iv) The contractor is to take the necessary particulars for ordering his materials and work

from the drawings and work in progress on the buildings and not use the Bills of

Quantities for that purpose.

(v) The contractor shall allow for mounting one complete set of drawings on hard board

or other approved backing, coating with varnish protecting and keeping on the site

for the duration of the contract.

Statutory Obligations, Notices, Clause No. 17

Fees and charges

(i) The contractor shall indemnify the Employer against all penalties incurred by reason

of the non-observance of such statuary obligations.

(ii) The contractor must also make himself fully acquainted with current ordinances and

Government and other regulations regarding the movement, housing, security, and

control labour, labour camps, etc. He must abide by the same and allow for extra

expense in this connection.

(iii) The contractor shall conform to and give notice in accordance with the provisions of

any Regulation or by-laws on the water, electricity and telephone or any other local

authority. The Contractor shall pay all fees, rates, and legally demandable charges for making such connections.

(iv) The cost of permanent connections which eventually become the responsibility of the

Employer will be paid on invoice from the appropriate statutory undertaking and

adjusted against the P.C. sums included in the Bills of Quantities as descried later in

the preliminaries.

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Levels and setting out of the works Clause No. 21

The contractor is to provide all labour, equipment, instruments and any other assistance

necessary to enable the Architect to check the level and setting out.

Materials, Goods, and Workmanship to

Conform to Description, Testing and Inspection Clause No. 23

(i) The standard of Workmanship shall not be inferior to the current British

codes of practice, no materials for use in the permanent construction are

to be used for any temporary or other purpose than for which they are

provided.

(ii) The Contractor shall place orders for all the required materials

immediately upon receipt of the order to commence the works and will

be held responsible for any delays occurring due to the late placing of

such orders.

(iii) The Contractor shall upon receiving quotations for any materials inform

the Architect if it appears that delivery dates quoted will delay the works

and shall not place an order for such materials until the Architect is so

informed, but such notification will not relieve the Contractor of his

responsibility under the contract.

(iv) The Contractor shall draw the attention of the Architect to all items

requiring his nomination or selection.

(v) Proprietary names, trademarks or brand names are used in these bills of Quantities purely as an indication of the type and quantity required and

such goods or materials May be obtained from any sources providing

that they are similar in type, not inferior in Quality, and approved by the

Architect.

(vi) Materials shall comply with the requirements of the latest British

Standards issued by the British Standards Institution. The Contractor

shall if so instructed produce certificate in respect of any materials

intended for use in the works to verify that it is in accordance with these

requirements.

(vi) All materials used in the works shall be new unless otherwise described. Workmanship generally shall comply with the recommendation of the relevant

British Standard code of practice issued by the British Standards Institution and to

satisfaction of the Architect.

Royalties and patent rights Clause No.25

Contractor’s site agent and other staff Clause No. 9

Keep constantly on site a competent, literate, English speaking site agent or foreman, fully

experienced with the work involved.

Access for Architect/ Principal

Consultant Clause No. 19

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Clerk of works Clause No. 10

Variations, provisional and prime cost sums Clause No. 30

(i) No claim in respect of payment for extra work at prices in excess of the unit prices entered in the Bills of Quantities, by reason of varying conditions or dissimilarity, will

be recognized unless notice is given in writing to the Architect Prior to the

performance of the work in question

(ii) Where day work charges are allowed as a basis of valuing work, the

day-work sheets submitted by the contractor shall show the name and

trade category of the employee concerned and the rates of pay. The

day-work sheet shall be completed in detail and submitted in duplicate.

Non-compliance with this condition will render the day-work sheets

invalid as far as they purport to be true records of cost.

Contract Bills and Price Clause No. 8

(i) The whole of the work contained in these bills of Quantities is measured on the

basis of the standard Method of Measurement for Building Works for East Africa.

(First Edition – Metric), published by the Architectural Association of Kenya,

Chapter of Quantity Surveyors, dated October, 1970 or any recent amendments

(ii) Exceptions to the above standard Method of Measurement:

(a) Clause B. 19(c) is deleted and the following clause substituted: “General

builder’s work in connection with works by nominated sub-contractors

including cutting all holes, chases, sinking and pockets and making good all floor, wall and ceiling finishing shall be given as an item. Other builder’s work

in connection shall be measured and given in accordance with the appropriate

rules of this document.”

(b) In cases where discretionary has been executed to vary the method of

measurement this is made clear by description in the item concerned and the

contractor is to allow accordingly in his prices. No claim for extra payment

will be considered for any alleged divergence between any item in the Bills of

quantities and a similar item in the standard method of measurement.

(iii) The method of measurement herein used must be accepted and will be strictly be

adhered to for the adjustment of variations and for re-measurements as necessary. The whole of the quantities in these Bills, unless expressly otherwise stated have

been arrived at by taking the net measurement of the various items of completed

work from the Drawings and all dimensions and measurements on the Drawings

and in the Bills of Quantities shall be taken to be in metric Legal Standard

measurements.

(iv) All work in this contract that is liable to adjustment has been measured as

“Provisional” in these Bills of Quantities, and no excavation or foundation work or

other work so described shall be filled in or covered up until all measurements

needed for the adjustment of variations under clause 11 of the conditions of

contract have been made by the Quantity surveyor.

(v) The Bills of Quantities shall be prices in ink.

(vi) Any unauthorized alteration or qualification made to the text of the Bills of

Quantities may cause the tender to be disqualified and will in any case be ignored.

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Contract Bills and Price Contd.) Clause No. 8

(vii) All items of measured work shall be priced in detail and tenders containing limp

sums to cover trades or groups of work must be broken down to show the price of

each item before they will be accepted. Lump sums to cover several items of preliminaries likewise shall be broken down if so required.

(viii) The rates set down by the contractor against each item in these Bills of Quantities

shall, unless otherwise provided to contrary, or unless there is a separate item for

extra labour, cutting and waste, be held to include for waste on materials, carriage,

cartage, carrying in return of empties, hoisting setting, fitting and fixing in position,

making good and all other labours and everything else necessary for the proper

completion of each item and for established charges and profit.

(ix) The Contractor shall be deemed to have made allowance in his prices generally to

cover items of preliminaries, expenses in connection with P.C sums or other item,

if these have not been priced against respective item.

(x) One blank and one priced copy of these Bills of Quantities shall be furnished free

of cost to the Contractor for his own use. The copy shall be kept on the works until

the completion thereof and the Architect and Quantify Surveyor shall at all

reasonable times have access to the same.

(xi) The pages of the Bills of Quantities have been numbered according to the Bills

numbers. Before submitting his tender, the Contractor should check the numbering

of pages and should any be found missing or in duplicate or figures or works

indistinct, or if any of the wording be ambiguous or the meaning or intention not

clear he should inform the Architect and have the same rectified as no liability whatsoever will be admitted in respect of errors in the tender due to the foregoing.

Words importing the singular only also include the plural and vice versa where the

context requires.

(xii) The Contractor is particularly requested to bear in mind that the whole of the

Quantities in the Bills are measured NET as fixed and the Contractor must include

in his prices for all waste of every description.

(xiii) Should the priced Bills of Quantities of the tenderer recommended for acceptance

show (after a complete arithmetically check) a difference between the tender figure

and the arithmetically correct figure, the prices of the ‘Builders work’ (that is the

arithmetically correct figure less all P.C and provisional sums and contingencies) shall be adjusted by a percentage adjustment calculated upon the total amount of

such errors in relation to the value of the Builders work so that the original tender

figure shall remain unaltered.

(xiv) Variations of “Builders Work” will be subject to the same amended rates or

percentage adjustment

Unfixed Goods and Materials Clause No. 14

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Practical Completion and

Defects Liability Clause No. 41

(i) The whole of the works are to be completed by the date of completion as previously

stated, and no extra will be allowed in respect of overtime worked to achieve

completion by the date so fixed.

(ii) If the Architect in respect of extra works specifically instructs the working of overtime, the contractor will be reimbursed the net extra cost of wages paid over and above the

normal daily rates.

Partial Possession by Employer Clause No 42

Assignment or Sub-letting Clause No. 26 & 27

Should consent be given to Sub-let any portion of the work the contractor will in no way be

relived of his liabilities and responsibilities.

Injury to persons and Property And Employer’s indemnity

Indemnify Employer (personal injury or death). Clause No. 11

Indemnify Employer (Injury or damage to property) Clause No. 11

Insurance against Injury to persons and property. Clause No. 12, 13 & 14

These risk shall be covered by a contractor’s Third party policy with an Indemnity of not less

than K.Shs. 500,000.00 for any one accident or series of accidents arising from the same event

unlimited in aggregate

Insurance of Joint Indemnification Clause No 12 & 13

The cost of the premium in respect of any special insurance shall be

Substantiated by a separate quotation and invoice to be submitted to the

Quantity Surveyor for inspection approval and adequacy of cover and upon such approval being

granted, the cost shall set against the provisional sum provided on the main summary in these

bills of Qualities.

Insurance of Works against Fire, etc Clause No .12 & 13

(i) Sub-paragraphs (B) and (C) to be struck out.

(ii) Insurance cover against fire following earthquake shall be included in the risk listed.

(iii) The Contractor’s attention is drawn to the fact that the above insurance does not cover

temporary buildings, plant, tools, equipment owned or hired by the Contractor or any

sub-contractor or such risks as accidental or malicious damage, etc, and he should

allow here for any insurance in respect of these items or others he may require not

covered by clause13 as referred to above.

Possession, Completion and Postponement ClauseNo. 20

The Contractor shall complete the Works in the time stated in the Form of Tender (Subject to the

provision of clause No. 36).

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Damage for non-completion Clause No. 43

The Contractor shall pay to the Employer liquidated and ascertained damages for the period

during which the works remain uncompleted as detailed in the Appendix to the conditions of

contract on page 2/15 hereafter.

Extension of Time Clause No. 23

(i) The Contractor shall order all materials to be obtained from overseas immediately

upon signing the Contract and shall also order materials to be obtained from local

sources as early as necessary to ensure that such materials to are on site when

required for use in the Works. However before placing any order, the Contractor

must obtain confirmation in writing, from the Architect, that the materials specified

are for the works and have not been varied in any way in the light of altered

requirement or planning.

(ii) A claim for extension of time under (i) above will not be considered unless substantial proof is submitted that every endeavor has been made by the contractor

to avoid such delay. A soon as any delay become apparent the Architect must be

notified in writing .

Loss and expense caused by disturbance

Of regular progress of the Works Clause No. 37

Determination by Employer Clause No. 38

Determination by Contractor Clause No. 39

Nominated Sub-contractors Clause No. 31

(i) The Contractor shall be responsible for giving all necessary directions to nominated

sub-contractors, ascertaining their requirements, co-coordinating their work and

arranging for them too be on site at the proper time for the orderly progress of the

works and for agreeing accurate dimensions in regard to setting out, holes, chases,

notching and the like. He shall place all orders with Nominated sub-contractors

clearly on his own behalf and shall not pledge the credit of the Employer either

directly or indirectly. In no case shall the Contractor be deemed to be the agent of

the employer nor shall there be created any privity of contract as between the

employer and the Nominated Sub-Contractor. The contractor must enter into a

written Sub-Contract using an approved form and must deposit with Architect signed copies thereof.

(ii) The Contractor shall accept responsibility for providing the following services for

nominated Sub-Contractor:

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GENERAL ATTENDANCE

(a) Use for the purpose of the Sub-Contract Works of any scaffolding

belonging to or provided by the Contractor while it remains so

erected upon the site, provided that no warranty or other liability on the part of the contractor or of his other Sub-Contractors shall be

created or implied in regard to the fitness, condition or suitability of

the said scaffolding.

(b) Provision of water, lighting and attendance for the purpose of the

Sub-Contract Works.

(c) Use of Sanitary accommodation, mess-rooms and welfare facilities.

(d) Provision of space for erection of offices or stores or space for

storage of plant and materials.

(e) Clearing away rubbish produced by them

(iv) The foregoing services are described hereafter as “Allow for general

attendance”.

(v) When accepting tenders from nominated Sub-Contractors, the Contractor is advised to

enter into a properly executed Sub-Contract and to use the sub-Contract form as issued

by the Kenya Association of Building and civil Engineering Contractors.

(vi) The Employer will not be held responsible for any claim arising out of the

Contractor’s failure to enter into a proper Sub-Contract.

(vi) Special Attendance is given as a separate item and where described

under the following headings shall mean

(a) Taking Delivery: Shall mean the provision of unskilled labour,

necessary to attend upon the Sub-Contractor’s workmen for the

purpose of unloading plant and materials when received upon the

site and placing in position within the Sub-contractor’s storage

space or store.

(b) Hoisting: Shall mean the provision of unskilled labour and the use

of any Contractor’s standing plant for the purpose of assisting the Sub-Contractor’s workmen’s in hoisting the Sub-Contractor’s plant

and materials to the various levels but not placing in its final

position.

(c) Providing power: Shall mean the provision of power during the period

during the course of the works and during the period of commissioning

and testing

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Nominated Sub-contractors(Contd) Clause No. 31

(vii) Nominated Sub-Contractors shall be responsible for (Unless specifically mentioned

under Special Attendance)

(a) The cost of any necessary alteration to or re-erection of the

Contractor’s ordinary scaffolding which may be required by them

to carry out their work.

(b) Special scaffolding.

(c) Provision, erection and removal of workshops, sheds for the

storage of materials or plant where the nature of the materials or

plant are such that they may be damaged by inclement weather or

other buildings for their employees, workmen and materials.

(d) Provision of all necessary labour, plant, tools materials and equipment, etc., necessary to carry out and complete their work

Work by other persons engaged by the Employer Clause No. 33

Certificates and payment Clause No. 34

(i) The period of payment from the date of presentation of Architect’s Certificate to the

Employer will be 14 days.

(ii) All documents necessary for the purpose of the composition of the Final Account

including all documents relating to the account of Nominated Sub-Contractors and suppliers shall be passed to the Quantity Surveyor as and when available during the

progress of the Works and not later than one month after the date of practical

completion.

(iii) If a certificate remains unpaid beyond the period for honouring certificates

stated herein, the employer shall pay or allow to the contractor interest on the

unpaid amount for the period it remains unpaid at commercial bank lending

rate in force during the period of default.

Fluctuations Clause No. 35

This Contract is a fixed price Contract and therefore the conditions of contract clause 35 (3)(A), 35 (3) (B) and 35 (3) (C) are not applicable. See appendix to conditions of contract for full

description of the fluctuations clause.

Settlement of Disputes Clause No. 45

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APPENDIX TO THE CONDITIONS OF CONTRACT

The following are the particulars which will be inserted in the Appendix to the conditions of the

Contract but the Employer reserves the right to negotiate with the Contractor up to the time of

the signing the contract in respect of any particular or particulars. Clause

Amount of surety 16.1 10 percent

Period of submission of

works program 18.1 Two weeks

Defects Liability period 41.6 Six months from practical

completion of the works as

certified by the Project

Manager in writing.

Percentage to cover

professional fees 13.0 8.0 per cent

Date for possession 20.1 to be arranged upon signing

the contract

Date of Completion 20.2 As stated on form of tender.

Liquidated and ascertained

Damages 43.1 At the rate of K.Shs. 20,000.00

per week.

Percentage of certified

value retained 34.12 10 per cent

Limit of retained fund 34.12 5 percent

Period of Final measurement 34.17 Six months, after certified

practical completion.

Period of release of retention 34.1 Six months, after certified

practical completion.

Period of Interim Certificates 34.1 Monthly

Period of honouring certificates 30 14 days

Carried to Collection K.Shs.

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GENERAL MATTERS

Sufficiently of tender

The Contractor shall be deemed to have satisfied himself before tendering as to the correctness

and sufficiently of his tender for the works and the rates and prices stated in the priced Bills of Quantities which rates and prices shall cover all his obligations under the contract and all matters

and things necessary for the proper completion and maintenance of the works.

Access to Site and Temporary Roads

The contractor is to construct and maintain any temporary roads he thinks necessary and provide

murram, sprawls, or roller cordage as required or instructed to facilitate the transport of materials

and must remove sprawls, etc, if required at completion but not unless ordered or permitted to do

so by the Architect and such materials are not ordered or permitted to be removed are to remain

the property of the employer. The Contractor will be entirely responsible for the upkeep of

temporary roads.

Area to be occupied by the Contractor

The area of the site, which may be occupied by the Contractor for use as storage and for the

purpose of erecting workshops, etc., shall be defined on the site by the Architect

Existing Services

Prior to commencement of any work the Contractor is to ascertain from the relevant authorities

the exact position, depth and level of all existing electric cables, water pipes or other services in

the area and shall make whatever provision which may be required by the authorities concerned

for the support and protection of such services. Any damage or disturbance caused to any service shall be reported immediately to the Architect and the relevant Authority and shall be made good

to their satisfaction at the Contractor’s expense.

Setting Out

The Contractor shall set out the works in accordance with the dimensions and levels shown on

the drawings and shall be responsible for correctness of all dimensions and levels so set out by

him and will be required to amend all errors arising from inaccurate setting out at his own cost

and expense. In the event of any error or discrepancy in the dimensions or levels marked on the

drawings being discovered, such errors or discrepancies must be reported by the contractor to the

Architect for his immediate approval.

No work shall be commencement by the contractor until he has received written instructions

from the Architect to adjust such discrepancies, which may be proved. Upon receipt of such

instructions, the contractor shall thereupon be responsible for the accurate setting out of the

work, giving effect to the adjustments necessary to comply with such instruments, and no claim

for extra expense or relief from the provision of clause 21 of the conditions of contract based on

any discrepancy or error in the dimensions or levels shown on the drawings may be made

thereafter.

Before any work is commenced by sub-contractors or specialists firms, dimensions must be

checked on the site and/ or buildings and agreed with the contractor, irrespective of the

comparable dimensions shown on the drawings, the contractor shall be responsible for the accuracy of such dimensions.

Carried to collection Kshs.

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Transport to and from the Site

The Contractor shall include in his prices for the transport of materials, workmen, etc., to and

from the site of the proposed works, at such hours and by such routes as are permitted by the

Authorities.

Public and private Roads, Pavements, etc.

The Contractor will be required to make good, at his own expense, any damage he may cause to

the present road surfaces and pavements during the period of the Works. In particular all existing

lawns, gardens, paths, storm water channels, hedges, fences, etc, which may be destroyed or

damaged during the progress of the works are to be made good by the Contractor to the Approval

of the Architect.

Security of Works, Watching and Lighting

The Contractor shall be entirely responsible for the security of all the Works, stores, materials,

plants, personnel, etc., both his own and Sub-Contractor’s and shall provide all necessary watching, lighting and other precautions as necessary to ensure the security and the protection of

the public.

Water

The Contractor shall provide at his own cost all the water for use in the works including that

used by Nominated Sub-Contractors.

However, there is an existing water supply on the site and should the contractor makes use of the

same, a suitable arrangement with the employer will have to be entered into in regard to the

payment for its use.

No guarantee is given or implied that sufficient water will be available and the Contractor must

make his arrangements for augmenting this supply at his cost if necessary.

He shall also provide for temporary piping and storage tanks as necessary and clear away on

completion.

Electrical Light and Power

The Contractor shall provide at his own cost all the power for use in the works including that

used by Nominated Sub-Contractors. He shall make his own arrangements with the

subcontractors for power provided specifically for their use.

Electricity is available on site and should the contractor make use of the same, a suitable

agreement with the Employer will have to be entered into with regard to payment for the same.

Safety, Health and welfare of Workpeople

The Contractor shall allow for all cost and charges in complying with all safety, health and

welfare regulations appertaining to all the work people employed on site including those

employed by all Sub-Contractors.

Temporary sheds

The Contractor shall allow for providing and maintaining temporary sheds and shelters for

accommodation of all workmen, workshops, and sheds for storage of materials that may be

necessary for the works in approved positions on the site including those required by sub-

contractors and removing same when no longer required or when directed.

Carried to collection Kshs.

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Latrines

The contractor shall allow for providing, maintaining and keeping in a sanitary condition

adequate temporary sanitary facilities in accordance with local regulations for all persons

employed on the works, including Sub –Contractors. Alter, shift and adapt from time to time as

necessary, remove same when no longer required or when directed, reinstate ground to the satisfaction of the Architect and deodorize soil.

Rates and Taxes

The Contractor shall allow for the payment of any rates and taxes levied by rating Authority

upon temporary structures the contractors is required to provide on the site for the execution of

the works.

Building Regulations

The whole of the works are to be executed in strict accordance with current building regulations

to the satisfaction of the local Authorities and the Architect.

Records

The Contractor shall allow for keeping records appertaining to the works and shall keep on the

site a daily recording of weather conditions, temperature, visitors to the site, etc.

Photographs

The Contractor shall allow for supplying four copies of progress photographs per month to the

Architect throughout the period of the Contract and in full plate size.

Ordering materials

The contractor shall not use the Bills of Quantities for the purpose of ordering materials, but

must do so from detailed drawings.

Architect inspection

No work shall be covered up until inspected and approved by the Architect.

Testing of materials

The contractor should allow for all expenses in connection with the testing of materials as specified hereunder including the supply and preparation of materials to be tested, the cost of the

materials and their packing and conveyance to the nearest Ministry of Public Works, or other

equal and approved testing laboratory charges, etc. The following items of tests will be re-

measured according to the number of tests actually called by the Architect, but unsuccessful test

will not be included in the re-measurement.

Provide the sum o Kenya Shillings Two Hundred Thousand (K.Shs 200,000/-) only for testing of

materials

Sign Board

The contractor shall provide and erect where directed and maintain during the whole period of

the works and remove at completion, a temporary notice board to the Project Managers standard

design giving brief description of the works and showing the names of the Employer and the

consultants, with sufficient space to append the names of the sub-contractor and suppliers when

known. The lettering is not to be more than 50 mm high. The local Authority and NEMA

approval numbers must be printed thereon. No other sign board or advertisements shall be

Carried to collection Kshs

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Fair wages

The Contractor is to comply with the regulation of wages (Building and construction industry)

order and is to be responsible for compliance by Sub-Contractors employed in the execution of

the contract.

If required, he is to notify the Architect of any names and addresses of all such sub-contractors.

Any contractor or sub-contractor not so complying will not be permitted to tender for other work

for such period as the Architect may determine

Should a claim be made to the Architect alleging the contractor’s default in payment of fair

wages of any workman employed on the contract and if proof thereof satisfactory to the

Architect is furnished by the Labour Department, the Architect may, failing, payment by the

Contractor pay the claim out of any monies due or which may become due to the contractor

under this contract.

The Contractor is to furnish to the Architect if called upon to do so such particulars of the rates of wages, hours and conditions of labour referred to above as the Architect may direct.

Housing of labour and watchman

No labour camps will be permitted on site.

The contractor is to allow for expenses he may incur in connection with transportation of

workmen to and from site.

Existing property

The contractor shall take every precaution to avoid damage to all existing property including

roads, cables, drains and other services and will be held responsible for all damage thereto,

arising from the execution of this contract, and he shall make good all such damage at his own

expense.

Supervision

The said works shall be executed under the direction and to the entire satisfaction of the

Architect, who shall at all times have access to the works and to the yards and workshops of the

Contractor or other places where work is being prepared for the building.

Training levy

The Contractor’s attention is drawn to legal Notice No. 237 of October, 1971 which requires

payment by the contractor of a training Levy on all contracts of more than Kshs. 50,000/- in

value and the Contractor should allow in the preliminaries of this contract for all costs arising or

resulting there-from.

Insurance

Within 14 days of the date of the letter accepting the tender and in any cases before the contract

is signed, the contractor must produce to the Architect for inspection the relevant policies

together with the receipts for the premiums paid for the insurance described in clause 13 of the conditions of contract or produce a current certificate of insurance.

At the same time the contractor must also deposit with the Architect the policy and the receipt

for the premium paid for fire, etc., insurance referred to in clause 12 of the conditions of contract

or produce a current certificate of insurance in accordance herewith.

Carried to Collection Kshs.

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Materials, tools, plant and Scaffolding

All materials and workmanship used in the erection of the works shall be of the best quality and

description unless otherwise described. Any materials for the works condemned by the Architect shall immediately be removed from the site at the contractor’s expense.

The Contractor shall be responsible for the provision of all materials, scaffolding, tools, plant,

transport and workmen required for the works except in so far as may be stated otherwise herein

and he shall allow for the provision of the foregoing except for such items specifically and only

required for the use of nominated Sub-Contractors as described herein.

No timber used for scaffolding, formwork or similar purpose shall be used afterwards for the

permanent work.

All such plant, tools and scaffolding shall comply with all regulations whether general or local in

force throughout the period of the contract and shall be altered or adapted during the contract, as may be necessary to comply with any amendments in or additions to such regulations.

Working Hours

No work shall be carried out in the night or on gazetted holidays unless authorized.

Visitors to site

The contractor is required to control all visitors to the site and to keep out unauthorized visitors

and to provide a visitors book and ensure that all authorized visitors sign.

Notices

For notice to be served under the conditions of contract:-

(i) The contractor shall notify to the Architect an address where notices may be served

upon him. or in the event of his failing to do so;

(ii) Notices shall be deemed served upon the contractor if sent by registered post to his

usual place of business or left at his office on the works.

Proprietary Articles

Where proprietary materials are specified herein the contractor may propose the use of materials

of equal quality but other than manufacturer for the approval of the Architect but the decision by

the Architect will be final.

Payments to nominated Sub-Contractors and suppliers

The Architect may direct that the sum to be paid to nominated Sub-Contractors, suppliers shall

be certified by the Architect and paid direct to the Sub-Contractor or supplier and that P.C. sum

included in the Bills of Quantities may be deducted from the contract Sum.

Samples

The contractor shall furnish at the earliest possible opportunity before the work commences and

at his own cost, any samples of materials or workmanship that may be called for by the Architect

for his approval or rejection and any further samples in the case of rejection until such samples

are approved by the Architect and such samples when approved shall be minimum standard for

the work to which they apply.

Carried Collection K.Shs.

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Copyright

The copyright of these Bills of Quantities is vested in the Quantity Surveyor and may not be

reproduced in whole or in part without the Quantity Surveyor’s written permission.

Prevention of Nuisance

The Works and such section of the site necessary therefore shall be under the entire care and

control of the contractor during the whole period of the Contract and he shall take all possible

precautions to prevent any nuisance, inconvenience or injury to the holders or occupiers of the

existing or surrounding properties and to the public generally, and he shall at all times keep all

paths and roads affected by the works in a safe and clear state, and shall use proper precautions

to ensure the safety of all wheeled traffic and pedestrians.

Protection of work

The Contractor is to provide everything necessary for proper protection of materials and completed work and property including roads, drains, fencing, etc., from damage as may be

required by the Architect. Any damage done to such existing work and property by the

Contractor’s lorries or workmen, or by any operations under the contract, is to be made good to

the satisfaction of the Architect at the contractor’s expense.

Removal of plant, rubbish, etc.

The Contractor shall upon completion of the works, remove and clear away all temporary

buildings, plant, rubbish and un-used materials, and shall leave the whole of the site of the works

in a clean and tidy state to the satisfaction of the Architect. He shall also remove all rubbish and

dirt from the site at weekly intervals or as directed by the Architect.

Particular care shall be taken in leaving windows clean and the removal of all paint and cement

stains there-from

Sales Tax

The Contractor’s attention is drawn to the sales Tax Act 1973 or most recent and any

amendments thereafter and his tender is deemed to include all costs arising or resulting there-

from.

Standard Levy

The contractor’s attention is drawn to the standards Levy Order (1990) (Standards Act- CAP.

496) or most recent and any amendments thereafter and his tender is deemed to include for all

costs arising or resulting there-from.

Offices for the Consultants

The Contractor shall allow for providing and maintaining a suitable office accommodation for

the use of the Consultants/Clerk of Works, size not less 20 square metres in floor area, properly

lighted, ventilated, floored, roofed, and furnished with chairs suitable for meetings. He should

also allow for consumables in connection with this clause, which shall in include stationary. Any

costs arising there from, shall be assessed and included under this item. He shall Allow for attendance and removal on completion or when directed.

Carried to collection K.Shs.

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Hoarding.

The contractor shall enclose the site with hoarding with openings and gates as required. The

hoarding shall be 2500 mm high constructed with timber to approval and covered with GCI sheeting painted to approval Allow a length of 114 Metres

SPECIAL CONDITIONS

1. The works are to be carried out in an existing and operating hospital. Care shall there be

required from the contractors to cause minimal interruptions to the daily activities of the

hospital.

2. Arising from No. 1 Above, the contractors is also reminded that due to the nature of activities

undertaken by the hospital, there may be intermittent stoppage of the works to allow the

hospital operations to be carried on uninterrupted. On some operations the contractor may be

required to carry out some works very late into the night and sometimes ion Weekends when the hospital operations are at the minimal level.

3. Some activities may be required to be undertaken on a 24 hour basis to minimize this

interruptions as well.

4 The site of the works is of Christian background. The contractor is advised to selected his

work men taking this into consideration to as to minimizes any behavior that is contrary to

this background.

5. The project is financed through donor contributions and tender acceptance will be limited,

and in principle qualified, subject to conclusion of the funding arrangements.

In this respect, and to ensure fulfilment of all Contractual obligations, express instruction

shall be sought from the Employer prior to embarking on those items of Work in Phase 2 and

3, as scheduled in the Tender Bills of Quantities. Such authority will be obtained through

written notices, citing affected timelines and values, and issued at least two months prior to

the planned implementation date, or as otherwise directed.

Should undue delay arise from the forgoing stipulation the prescribed clauses pertaining to

extension of time, extended preliminaries, fluctuations, together with loss and expense, will

apply.”

The contract is advised to take the above into consideration when pricing the document. If, in the opinion, any Clause in the foregoing Preambles has a monetary value requiring pricing, then he

is required insert the price in the money column, carry the same to the collection page.

Carried to collection K.Shs.

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GENERAL CONDITIONS AND PRELIMINARIES

COLLECTION

Page No. 2/1

Page No. 2/2

Page No. 2/3

Page No. 2/4

Page No. 2/5

Page No. 2/6

Page No. 2/7

Page No. 2/8

Page No. 2/9

Page No. 2/10

Page No. 2/11

Page No. 2/12

Page No. 2/13

Page No. 2/14

Page No. 2/15

Page No. 2/16

Page No. 2/17

Page No. 2/19

Page No. 2/20

Page No. 2/21

TOTAL AMOUNT OF BILL NO. 1

GENERAL CONDITIONS AND PRELIMINARIES

Carried Summary K.Shs

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BILL NO. 3

PREAMBLES TO TRADES

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BILL NO. 3

PREAMBLES TO TRADES

ITEM

EXCAVATION AND EARTHWORK

Nature of Excavation

A The Contractor must ascertain for himself the nature of the material to be excavated and price the

work accordingly as no allowance will be made beyond the Contract sum for any alleged

ignorance in this respect

Site Clearance

B The Contractor shall clear the Construction areas within the site of all bushes, roots, brush,

boulders, natural obstruction, rubbish and any other natural or artificial obstructions which would

interfere with construction of buildings, roads, paths and drains.

Ant/Termite and Rodents

C Clear away all ant/termite hills and nests over the area of the site, excavate for, locate and destroy

queens.

D Treat the cavity formed by removal of the nest as described hereinafter under “Soil Sterilization”

and backfill with approved material well rammed and consolidated in layer not exceeding 300

mm thick

E All areas of the site must be thoroughly proofed against rodents and special care must be taken to

ensure that no unconsolidated areas left near banks and ditches.

Commencing levels

F Unless specifically stated otherwise the commencing levels for excavation shall be deemed to be

existing ground level or underside of reduced level dig.

G All measurements are based reduced level excavation being executed first and no adjustment will

be made should a differing sequence of operations be adopted, unless specifically ordered by the

Architect in writing.

Excavations

H Excavations shall be to the width and depths indicated on the drawing or to a lesser or greater

depths as the Architect may deem necessary and so instruct the Contractor in order to obtain

satisfactory foundations.

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ITEM

EXCAVATION AND EARTHWORKS (contd)

Excavation

A Any difference in the quantity of work actually executed under such instructions and that

provided in the Bills of Quantities shall be measured and valued by Quantity Surveyors as a

variation under the relevant conditions of Contract.

B If, however, the Contractor excavates to any greater depths or widths than are shown on the

drawings or directed by the Architect then the Contractor shall at his own expense fill in such

extra depths and widths wits concrete similar to that described for foundations to the satisfaction

of the Architect.

Bottoms of excavation

C The Contractor shall report to the Architect as and when a secure bottom to the excavations has

been obtained and the same is ready to receive concrete

D Any concrete and other work put in before excavations have been inspected and approved shall, if

so directed, be removed and new work substituted after excavations have been approved, all at

the Contractor’s expense

E If so directed the Contractor shall water and well ram the bottom of excavations to the satisfaction

of the Architect.

Measurement of Excavation work

F Excavation work is measured net as before digging and the Contractor must allow for increase of

bulk after digging.

Trenches for pipes, cables, kerbs, etc other than drain pipe

G Prices for excavation of trenches for pipes, kerbs, etc. shall include for grading and ramming

bottoms to the levels required, all necessary planking and strutting, carefully returning, filling and

ramming selected excavated material and for carting away any surplus material.

Rock

H Any rock or any other hard materials encountered in excavating to the required depths which, in

the opinion of the Architect, can only be removed by wedges or compressor plant shall be paid

for as an extra and the price shall include for trimming and levelling. No blasting will be

allowed. Hard compacted murram which can be removed by pick will not be classed as rock

notwithstanding that the Contractor may decide to remove it by wedges or compressor plant.

J The contractor must give notification to the Architect or his representative when such material is

encountered and its extent must be agreed with the Architect or Quantity Surveyor or their

authorized representatives before the work is carried out. No allowance will be made from the

rock excavation unless the forgoing procedure has been followed.

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ITEM

EXCAVATION AND EARTHWORK (Contd)

Rates for excavations (Contd)

A The rates for excavations shall include for excavating by hand or machine in all types of material

except rock, as previously specified.

B Excavations for plain concrete foundations have been measured to the net sizes required by

concrete dimensions.

C All allowance for working space and formwork has been measured to reinforced concrete

foundations, but if the Architect’s approval is given to pouring concrete against the face of the

excavations these items will be measured and adjusted in the Final Account.

D The rates for excavation must include for such excavating in all types of ground encountered

including sand, murram, hard murram, tree roots and loose boulders.

Levelling

E No item is measured for levelling and consolidating ground and rates for excavation must include

for levelling and preparing the ground for concrete or other works including ramming or rolling.

Disposal of Water

F The Contractor shall keep the excavations free from standing water and silt (or excavated material

softened by water) and he shall include for the cost of pumping, construction and temporary

drains, soak way pits, etc., as deemed necessary to achieve this. An item has been included for

this in the Bills in each relevant section. The cost of pumping, to dispose of any spring or

running water has been covered by a provisional sum. If spring or running water is encountered,

the cost of any pumping ordered by the Architect will be paid for in accordance with the

Dayworks Schedule.

Planking and Strutting

G Sides of all excavations must be supported in order to prevent falls from or collapse of the earth

face. The term ‘Planking and strutting’ is deemed to include any method or methods which the

Contractor elects to adopt, to uphold, protect and maintain the sides of excavations. The

Contractor will be responsible for any consequences of his failure in this respect including

clearing away fallen material and any extra concrete or other works including formwork ordered

by the Architect due to such failure. An item has been included in these Bills in each relevant

section.

Return, fill in and ram

H Material returned around foundations externally shall be selected hard; dry excavated material

arising from the excavations free from vegetable soil, roots and rubbish carefully filled in, spread,

watered and compacted in layers not exceeding 200 mm thick. Backfilling internally shall be

hardcore, or selected hard dry granular materials as above to approval.

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ITEM

EXCAVATION AND EARTHWORK (contd)

Return, fill in and ram (Contd)

A No excavation or foundation work shall be filled in or covered up until all measurements

necessary for the adjustment of variations have been made. Walling shall not be built upon the

foundations until four days after depositing of concrete.

Cart away

B All surplus excavated material, where so directed, and all rubbish are to be removed from the site

and the Contractor is to find his own dump and pay all charges.

Approval before filling

C No fill material shall be placed before approval has been given by the Architect for filling to

begin.

Measurement of filling generally

D Filling is measured net as after construction

Earth filling

E Levels specified to be made up with surplus soil, etc., are to be filled in with selected soil free

from vegetable growth to the approval of the Architect and is to be laid in layers not exceeding

200 mm thick, each layer to be levelled, well rammed and consolidated and watered if necessary.

Hardcore filling

F Hardcore shall consist of clean hard broken stone or rubble graded to pass in all directions a 100

mm ring with sufficient sand added to fill the interstices. The hardcore shall be well packed,

rammed and where possible rolled with a heavy roller. Where rolling is impossible compaction

shall be by hand or by mechanical tampers before any concrete is laid on hardcore, the hardcore

shall be levelled and blinded with sand, rolled and well watered through a sprinkler rose.

Borrow pits

G No borrow pits will be allowed to be opened on the site.

Soil Sterilization

H Ant-termite treatment is to be carried out using one of the chemicals below and the Contractor

will be required, upon completion of the soil sterilization, to furnish a written guarantee certifying

the following:

PREAMBLES

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ITEM

EXCAVATION AND EARTHWORKS (Contd)

Soil Sterilization (contd)

A (a) That the chemicals applied comply with requirements specified herein for chemical

Concentration and rates of application.

(b) That the treatment will remain effective against termite infestation for a period of five years.

(c) The free re-treatment by the Contractor of any areas showing signs of infestation before the

expiry of the five year period

B The chemicals used shall be one of the following:-

1. Aldrin; 0.5% applied in oil solution or water emulsion

2. Benzane hexachloride; 0.8% of gamma applied in oil solution or water emulsion

3. Chlordane; 1.0% applied in oil solution or water emulsion

4. Dieldrin 0.5% applied in oil solution or water emulsion

5. Ternicide A; 1 part to 45 parts water

6. Lindane; 0.8% in oil solution or water emulsion

7. Pentachlorophenol; 5% in oil solution

8. Trichlorobenzene; 1 part to 3 parts oil.

C Some of the chemicals listed above are toxic to animal and plant life and must therefore be

applied only with caution by an experienced person. Where individual water supply system are

proposed, precautions must be taken to prevent infiltering and endangering the water supply.

Treatment shall not be made when soils or fill is excessively wet or immediately after heavy

rains.

D Precaution must also be taken to prevent disturbances of the treatment by animals or human

contact with the treated soil. The treated areas are to be covered as quickly as possible after

treatment

E The rate of application is to be 7 litres per square metre and the areas measured include those

under floor and around wall and column foundations.

PREAMBLES

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ITEM

CONCRETE WORK

Generally

A For description of materials and workmanship generally, the contractor is referred to the “General

Specification Of Building Works” dated 1976 as issued by ministry works, relevant codes of

practice and British standards, except as amended and/or amplified the clauses hereafter.

QUALITY, SAMPLES, TESTING AND APPROVAL

Tolerances

B On all setting out dimensions of 5 metres and over a maximum non-accumulative tolerance of

plus or minus 5 millimetres will be allowed. On all setting out dimensions less than 5 metres, a

maximum non-accumulative tolerance of plus or minus 3 millimetres will be allowed. On the

cross sectional dimensions of structure members, unless otherwise required by the drawings, a

maximum tolerance of plus or minus 3 millimetres will be permitted.

C The top service of concrete floor slabs and beams shall be within 6 millimetres of the normal

level and line shown on the drawings. Columns shall be truly plumb and non accumulative

tolerance of 3 millimetres in each storey and not more than 15 millimetres out of plumb in their

full height will be permitted. The contractor shall be responsible for the cost of all corrective

measures required by the Engineer to rectify work which is not constructed within the tolerances

set out above.

Materials generally

All materials which have been damaged, contaminated or have deteriorated or do not comply in

any way with the requirements of the specifications shall be rejected and shall be removed

immediately from the site at the contractors expense. No materials shall be stored or stacked on

floors without the Engineer’s prior approval.

The sources of supply for all materials used for concrete work shall be approved by the Engineer

before these materials are delivered on the site. All materials shall comply with the requirements

of the latest appropriate British standard unless otherwise agreed with the engineer, whose

approval shall be obtained in writing.

Samples

Samples of materials shall be submitted as soon as possible after the contract is let. No deliveries

in bulk shall be made until the samples are approved by the Engineer. All condemned materials

shall be removed from the site.

Approved samples and specimens shall be retained on Site for comparison with the finished

work. Finished work must conform in all respects with the samples or specimens approved. The

cost of supplying samples and specimens must be borne by the Contractor, but specimens may

form part of the finished work where approved by the Engineer.

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Cement

A Cement, shall be ordinary Portland cement CEM 42.5. Cement shall comply with the following

Kenya standards:-

KS EAS 18-1: 2001 for ordinary Portland cement

B A manufacturer's Certificate of Test in accordance with KS EAS 18-2: 2001 (conformity

evaluation) shall be supplied for each consignment delivered to the Site.

C Cement may be delivered to the site either in bags or in bulk.

D If delivered in bags, each bag shall be properly sealed and marked with the manufacture’s name

and on the site is to be stored in weather-proof shed of adequate dimensions with a raised floor.

Any bag found to contain cement which has set or partly set, shall be completely discarded and

not used in the works.

E If delivered in bulk the cement shall be stored in weather-proof silo either provided by cement

supplier or the contractor but in either case the silo shall be to the approval of the Engineer.

Aggregates

F Aggregates shall conform to the requirements of B.S. 882 and the sources and types of all

aggregates are to be approved in all respects by the engineer before work commences.

G Fine aggregates shall be clean, coarse, siliceous sand of good, sharp, hard quality and shall be free

from lumps of stone, earth, loam, dust, salt, organic matter and any other deleterious substances.

All the material shall pass through a 5mm BS sieve and the grading shall be in accordance with

zones 1, 2 or 3 of BS 882. Fine aggregates for mortar only shall comply with BS 1200.

H The grading of the coarse aggregates will be 20mm and 10mm in a ratio of 2:1. Coarse aggregate

shall be clean hard and durable crushed rock, crushed gravel or natural gravel complying with the

requirements of BS 882. The material shall not contain any pyrites, iron oxides, flaky or

laminated material, hollow shells, coal or other soft or porous material, or organic matter.

J Aggregates shall be delivered to the site in their prescribed sizes or gradings and shall be stock

piled on paved areas or in boarding platforms in separate units to avoid intermixing.

Water

K The water used for mixing concrete shall be from an approved source, clean, fresh and free from

harmful matter and comply with the requirements of B.S.3148.

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Concrete strengths

A Concrete mixes shall have the following minimum strengths as given by works cube tests:-

Minimum crushing strengths

7 days N/mm2 28 days N/mm2

Class 40 27 40

Class 35 24 35

Class 30 20 30

Class 25 17 25

Class 20 14 20

B The average strength obtained from cube tests shall be 10% higher than the minimum strengths

shown above.

Measured proportions of concrete

Cement:

C. The quantity of cement shall be measured by weight. Where delivered in bags, each batch of

concrete is to use one or more whole bags of cement.

Aggrerates:

D For classes 40 to 25, concrete aggregates shall be measured by weight in a weigh batching

machine as described hereafter.

E For class 15 concrete aggregates may be measured by weight or by volume. Where volume

batching is to be used, approved gauge boxes of such size as will give the correct proportions

shall be used.

Work Cube Test

F Four test cubes shall be cast from each volume batch. Work cubes are to be made at intervals at

every concreting stage from the mix used on site and the contractor shall provide a continuous

record of the concrete work. The cubes shall be made in approved 150mm moulds in strict

accordance with the code of practice BS 1881-part 108.

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Work Cube Test (Contd)

A Two cubes from each batch shall be tested for compressive strength at seven days and the

remaining two at 28 days.

B Each cube shall be marked with distinguishing number (numbers) to run consecutively and the

date and a record shall be kept on site giving the following particulars:

(a) Cube no.

(a) Date made.

(b) Location in work e.g. 1st floor slab, Foundation

(c) 7-day test

Date

Strength

(d) 28- day test

Date

Strength

C Cubes shall be forwarded by the Clerk of Works, carriage paid by the Contractor to an Approved

Testing Authority, in time to be tested (2No. at 7 days and the remaining 2No. at in 28 days). No

cube shall be dispatched within three days of casting.

D Originals of all work cube tests shall be forwarded to the Engineer and one copy shall be retained

on the site.

E If the strengths required above are not attained and maintained throughout, the contractor may be

required to remove and replace at his own cost any concrete which fails to attain the required

strength as ascertained by work cube tests.

Mixing and placing of concrete

F The concrete shall be mixed only in approved power-driven mixers of a type and capacity

suitable for the work, and in any event not smaller than 0.40/0.28 cu.m capacity.

G The mixer shall be equipped with an accurate water measuring device. All materials shall be

thoroughly mixed dry before the water is added and the mixing of each batch shall continue for a

period of not more than two minutes after the water has been added and until there is a uniform

distribution of the materials and the mass is uniform in colour.

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Mixing and placing of concrete (Contd)

A The entire contents of the mixed drum shall be discharged before recharging. The volume of

mixed materials shall not exceed the rated capacity of the mixer. Whenever the mixer is started,

10% extra cement shall be added to the first batch and no extra payment will be made on this

account.

B As a check on concrete consistency slump tests shall be carried out and shall be in accordance

with B.S 1881-102. The contractor shall provide the necessary apparatus and carry out such tests

as are required. The slump of the concrete made with the specified water content, using dry

materials, shall be determined and the water to be added under wet conditions shall be so reduced

as to give approximately the same slump.

C The concrete shall be mixed as near to the place where it is required as is practicable, and only as

much as is required for a specified section of the work shall be mixed at one time, such section

being commenced and finished in one operation without delay. All concrete must be efficiently

handled and used in the works within twenty (20) minutes of mixing. It shall be discharged from

the mixer direct either into receptacles or barrows and shall be distributed by approved means

which do not cause separation or otherwise impair the quality of the concrete. Approved

mechanical means of handling will be encouraged, but the use of chutes for placing concrete is

subject to the prior approval of the Engineer.

D For a fibre reinforced concrete, fibre shall be “fibremesh fibers” as provided by “Somers

Engineering Ltd” at a dosage of 0.9 kg/m3 or equal and approved.

E Concrete shall be placed from a height not exceeding 1,500mm directly into its permanent

position and shall not be worked along the shutters to that position. Unless otherwise approved,

concrete shall be placed in a single operation to the full thickness of slabs, beams and similar

members, and shall be placed in horizontal layers not exceeding 1,500mm deep in walls and

similar members.

F Where the height of the column exceeds 4 metres suitable openings must be left in the shutters so

that this maximum lift is not exceeded.

G Concrete shall be placed continuously until completion of the part of the work between

construction joints as specified hereinafter or of a part of approved extent. At the completion of a

specified or approved part a construction joint of the form and in the positions hereinafter

specified shall be made. If stopping of concreting be unavoidable elsewhere, a construction joint

shall be made where the work is stopped. A record of all such joints must be made by the

contractor and a copy supplied to the engineer.

H Any accumulation of set concrete in the reinforcement shall be removed by wire brushing before

further concrete is placed.

J The contractor shall provide runways for concreting to the satisfaction of the engineer. Under no

circumstances will the runways be allowed to rest on the reinforcement.

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Mixing and placing of concrete (Contd)

A Care shall be taken that the concrete is not disturbed or subjected to vibrations and shocks during

the setting period.

B Mixing machines, platforms and barrows shall be clean before commencing mixing and be

cleaned on every cessation of work.

C Where concrete is laid on hardcore or other absorbent materials, the base shall be suitable and

sufficiently wetted before the concrete is deposited.

Compaction

D At all times during which concrete is being placed the contractor shall provide adequately trained

and experienced labour to ensure that the concrete is compacted in the forms to the satisfaction of

the engineer.

E Concrete shall not be placed at a rate greater than will permit satisfactory compaction not to a

depth greater than 400mm before it is compacted.

F During and immediately after placing, the concrete shall be thoroughly compacted by means of

continuous tamping, spading, slicing and vibrating. Vibration is required for concrete classes 40,

35, 30 and 25.

G Care shall be taken to fill every part of the forms, to work the concrete under and around the

reinforcement without displacing it and avoid disturbing recently placed concrete which has

began to set.

H Any water accumulating on the surface of newly placed concrete shall be removed and no further

concrete shall be placed thereof until such water is removed.

J Internal vibrators shall be of a frequency of not less than 7,000 cycles per minute and shall have a

rotating eccentric weight of at least 0.50kg., with an eccentricity of not more than 12mm. such

vibrators shall visibly affect the concrete within a radius of 250mm from the vibrator.

K Internal vibrators shall not be inserted between layers of reinforcement less than one and one half

times the diameter of the vibrators apart. Contact between vibrators and reinforcement and

vibrators and formwork shall be avoided.

L Internal vibrators shall be inserted vertically into the concrete wherever possible at not more than

500mm and shall constantly be moved from place to place. No internal vibrator shall be permitted

to remain in any one position for more than ten seconds and it shall be withdrawn very slowly

from the concrete.

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Compaction (Contd)

A In consolidating each layer of concrete the vibrating head shall be allowed to penetrate and re-

vibrate the concrete in the upper portion of the underlying layer. In the area where newly placed

concrete in each layer joins previously placed concrete more than usual vibration shall be

performed, the vibrator penetrating deeply at close intervals along these contacts. Layers of

concrete shall not be placed until layers previously placed have been vibrated thoroughly as

specified.

B Vibrators shall not be used to move concrete from place to place in the formwork.

C At least one internal vibrator shall be operated for every 1.5 cubic metres of concrete placed per

hour and at least one spare vibrator shall be maintained on site in case of break-down during

concreting operations.

D External form work vibrators shall be of the high frequency low amplitude type applied with the

principle direction of vibration in the horizontal plane. They shall be attached directly to the

forms at not more than 1,200mm centres.

Chemical hardener and Dust proofing

E After doing a power floated finish on the ground floor slab, a chemical hardening and dust

proofing compound will be applied. The chemical hardener will be applied in three coats 14 days

after casting; second coat will be applied as soon as the first coat has dried. Dust proof chemical

compound shall be “Nitoflor Lithurin” as manufactured by “a.b.e Construction Chemicals Ltd.”

or equal and approved.

Construction joint

F Construction joints shall be permitted only at the positions pre-determined on the drawings or as

instructed on the site by the engineer. In general they shall be perpendicular to the lines of

principal stress and shall be located at points of minimum shear, viz, vertically at, or near, mid –

spans of slabs, ribs and beams.

G Under no circumstances shall concrete be allowed to tail-of, but it shall be deposited against s

topping –off boards.

H Before placing new concrete against concrete already hardened, the face of the old concrete shall

be thoroughly hacked, roughened and cleaned, and laitance and loose material removed there

from, and immediately before placing the new concrete the surface shall be saturated with water

and covered with a coat of mortar at least 25mm in thickness composed of cement and fine

aggregate in the proportions used in the concrete.

Expansion and contraction joints

J Expansion and contraction joints shall be formed in the positions and in accordance with the

details shown on the drawings or elsewhere in the specifications. Expansion joint filler shall be

“Flexcell” as manufactured by “Expandite Ltd.” or “Resilex” as manufactured by “Evamatics

Ltd.” or equal and approved. The sealant shall be “Sikaflex pro 2HP” from “Laxcon” or

“abelastic” as manufactured by “a.b.e. Construction Chemicals Ltd.” or equal and approved.

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Curing and protection

A Care must be taken that no concrete is allowed to become prematurely dry and the fresh concrete

must be carefully protected within two hours of placing from the rain, sun and wind by means of

hessian sacking, polythene sheeting, or other approved means. This protective layer and the

concrete itself must be kept continuously wet for at least seven days after the concrete has been

placed. The contractor will be required to provide complete coverage of all fresh concrete for a

period of 7 days. Hessian or polythene sheeting shall be in the maximum widths obtainable and

shall be secured against wind. The contractor will not be permitted to use old cement bags,

Hessian or other material in small pieces.

B Concrete in foundations and other underground work shall be protected from admixture with

falling earth during and after placing.

C Traffic or loading must not be allowed on the concrete until the concrete is sufficiently matured,

and in no case shall traffic or loading be of such magnitude as to cause deflection or other

movement in the formwork or damage to the concrete members. Where directed by the engineer

props may be required to be left in position under slabs and other members for greater periods

than those specified.

Faulty concrete

D Any concrete which fails to comply with these preambles, or which shows signs of setting before

it is placed shall be taken out and removed from the site. Where concrete is found to be defective

after it has set, the concrete shall be cut out and replaced in accordance with the engineer’s

instructions. On no account shall any faulty, honeycombed, or otherwise defective concrete be

repaired or patched until the engineer has made an inspection and issued instructions for the

repair. The whole of the cost whatsoever, which may be occasioned by the need to remove faulty

concrete, shall be borne by the contractor.

Rod reinforcement

E The steel reinforcement shall comply with the latest requirements of the following British

standards or equivalent Kenyan standard:-

- KS 573:2005

- Hot rolled bars for the reinforcement of concrete to B.S 4449

F The contractor will be required to submit test certificate of the rollings. Reinforcement shall be

stored on racks above ground level. All reinforcements shall be free from loose scale or rust,

grease, paint or other substances likely to reduce the bond between the steel and concrete.

Fabric reinforcement

G To be electrically cross-welded steel wire mesh reinforcement to B.S 4483 and of the size and

weight specified.

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Fixing rod reinforcement

A Reinforcement shall be accurately bent to the shapes and dimensions shown on the drawings and

schedules and in accordance with B.S 4466. Reinforcement must be cut and bent cold and no

welded joints will be permitted unless so detailed.

B Reinforcement shall be accurately placed in position as shown on the drawings and before and

during concreting, shall be secured against displacement by using No. 18 S.W.G annealed

binding wire or suitable clips at intersections, and shall be supported by concrete or metal

supports, spacers or metal hangers to ensure the correct position and cover.

C No concreting shall be commenced until the Engineer has inspected the reinforcement in position

and until his approval has been obtained and the contractor shall give two clear days notice of his

intention to concrete.

D The contractor is responsible for maintaining the reinforcement in its correct position according

to the drawings, before and during concreting. During concreting a competent steel fixer must be

in attendance to adjust and correct the position of any reinforcement which may be displaced. The

vibrators are not to come into contact with the reinforcement.

Position and correctness of reinforcement

E Irrespective of whether any inspection and/or approval of the fixing of the reinforcement has been

carried out as above, it shall be the contractor’s sole responsibility to ensure that the

reinforcement complies with the details on the drawings or schedules and is fixed exactly in the

positions shown therein and in the positions to give the prescribed cover. The contractor will be

held entirely responsible for any failure or defect in any portion of the reinforced concrete

structure and including any consequent delay, claims, third party claims, etc, where it is shown

that the reinforcement has been incorrectly positioned or is incorrect in size or quantity with

respect to the detailed drawings or schedules.

Formwork

G The method and system of formwork which the Contractor proposes to use shall be approved by

the Engineer before construction commences. Formwork shall be substantially and rigidly

constructed of timber or steel or precast concrete or other approved material.

H All timber for formwork shall be good, sound, clean, sawn well-seasoned timber, free from warps

and loose knots and of scantlings sufficiently strong for their purpose.

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Construction of Formwork

A All formwork shall be of sufficient thickness and with joints close enough to prevent undue

leakage of liquid from the concrete and fixed to proper alignment, level and plumb and supported

on sufficiently strong bearers, shores, braces, plates, etc., properly held together by bolts or other

fastenings to prevent displacement, vibration or movement by the weight of materials, men and

plant on same and so wedged and clamped as to permit of easing and removal of the formwork

without jarring the concrete. Where formwork is supported on previously constructed portions of

the reinforced concrete structural frame, the Contractor shall by consultation with the Engineer

ensure that the supporting concrete structure is capable of carrying the load and/or sufficiently

propped from lower floors or portions of the frame to permit the load to be temporarily carried

during construction.

B Soffits shall be erected with an upward camber of 5 mm for each 5 metres of horizontal span or as

directed by the Engineer.

C Great care shall be taken to make and maintain all joints in the formwork as tight as possible to

prevent the leakage of grout during vibration. All faulty joints shall be caulked to the Engineer's

approval before concreting.

D The formwork shall be sufficiently rigid to ensure that no distortion or bulging occurs under the

effects of vibration. If at any time the formwork is insufficiently rigid or in any way defective the

Contractor shall strengthen or improve such formwork as the Engineer may direct.

E The Contractor's attention is drawn to the various surface textures and applied finishes required.

The faces of formwork next to the concrete must be of such material and construction; it should

be sufficiently true to provide a concrete surface which will in each particular case permit the

specified surface treatment or applied finish.

F All surfaces which will be in contact with concrete shall be oiled or greased to prevent adhesion

of mortar. Oil or grease shall be of a non- staining mineral type applied as a thin film before the

reinforcement is placed. Surplus moisture shall be removed from the forms prior to placing of the

concrete.

G Temporary openings shall be provided at the base of columns, wall and beam forms and at any

other points where necessary to facilitate cleaning and inspection immediately before the pouring

of concrete. Before the concrete is placed the shuttering shall be trued-up and any water

accumulated therein shall be removed. All sawdust, chips, nails and other debris shall be washed

out or otherwise removed from within the formwork. The reinforcement shall then be inspected

for accuracy of fixing. Immediately before placing the concrete the formwork shall be well

wetted and inspection openings shall be closed. The erection, easing, striking and removing of all

formwork must be done under the personal supervision of a competent foreman, and any damage

occurring through faulty formwork or its incorrect removal shall be made good by the Contractor

at his own expense.

H After removal of formwork, all projections, fins, etc., on the concrete surface shall be chipped off,

and made good to the requirements of the Engineer. Any voids or honeycombing shall be treated

as described in "Faulty Concrete".

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Stripping Formwork

A All formwork shall be removed without undue vibration or shock and without damage to the

concrete. No formwork shall be removed without the prior consent of the Engineer and the

minimum periods that shall elapse between the placing of the concrete and the striking of the

formwork will be as follows:-

B Beam sides, wall and columns (unloaded) 2 days

Slabs 14 days

Beams 14 days

Cantilevered beams and slabs 28 days

C he above times may be reduced in certain circumstances, at the discretion of the Engineer,

provided an approved method is adopted at the Contractor's expense to ensure that the required

concrete strength is attained before the forms are stripped.

D Solid strips in composite slabs shall be considered as beams. The tops of retaining walls shall be

adequately supported with stout raking props at intervals required by the Engineer. These props

are not to be removed until 7 days after casting of the floor slab over.

Supporting Props to Wall and Beam Soffits

E Where directed by the Engineer supporting props to wall and beam soffits are to be left in

position until completion of the whole of the reinforced concrete structure.

F The props are to be to the approval of the Engineer and the Contractor must submit the suggested

method of propping to the Engineer prior to removal of formwork to the relevant surfaces

Concreting the next lift

G When concreting the next lift, cast a kicker of 75mm. Before casting the kicker, hack the element

below it to expose the concrete, clean thoroughly, put cement slurry before casting the kicker

with concrete class higher than the specified element. Ram the concrete to ensure

achiCONCRETE WORK

H NOTE: Materials and workmanship clauses which follow in the specification embody the

recommendations of CP 114 (1957) for the structural use of Reinforced concrete in

building, unless otherwise specifically stated.

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WALLING

Setting out walling

A The Contractor shall provide proper setting out rods and set out all work on same for causes,

openings, heights, etc., and shall build the walls and piers, etc., to the widths, depths and heights

indicated on the drawings and as directed and approved by the Architect.

Cement

B Cement shall be as described in concrete work.

Fine Aggregate

C Fine aggregate for concrete blocks shall be as described for fine aggregate in concrete work

Coarse Aggregate

D Coarse aggregate for concrete blocks shall be good, hard, clean aggregate from approved

quarries. It shall be free from all decomposed materials and shall be graded up to 10 mm and all

as described for coarse aggregate in concrete work.

Concrete Blocks

E Concrete blocks for walling shall be provided by the Contractor complying with B.S 2028 Type

A, and made in approved block making machines of a composition as follows:-

Portland cement 1 cubic metre

Coarse aggregate (graded up to 10 mm) 6 cubic metre

F Blocks shall be solid or hollow two hole type as specified and are to be made under sheds erected

by the Contractor to the directions and approval of the Architect. In hollow blocks, the volume of

the cavities shall be not less than 45% and not more than 50% of the gross volume, and the

dimensions of the cavities arranged so that each cavity is vertically continuous when the blocks

are bonded. Samples shall be approved by the Architect before any walling work is commenced.

G The comprehensive strength Type A blocks shall be not less than:-

Average of 13 hollow blocks 5.75 N/mm gross area

Lowest individual hollow block 4.0 N/mm gross area

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WALLING (contd)

Concrete Blocks (contd)

A The Concrete is to be put into the machine’s moulds in thin layers and all properly tamped

therein. On removal from the machines, the blocks are to be carefully deposited on racks under

sheds erected by the contractor to the direction and approval of the Architect and then left for

three days and kept thoroughly wet the whole time, after which they shall be put out in the open

or racks and protected with the approval matting, sacking or straw and kept wet for a further

seven days, then kept in the same position and under the same mat cover, but without wetting for

a further two days and then left in the open without matting or wetting for a further seven days to

season. All blocks must be left with good sharp edges. The blocks for use in the Works shall be

190 mm high and may vary in length from 300 mm to 400 mm and no variation above or below

these lengths will be allowed except where required to form proper bonding at corners, round

openings, sills, lintels, beams etc., and the like positions and the Contractor must make or cut

blocks to all the varying sizes required for these purposes and include this in his price.

Bonding Walling

B The blocks shall be properly bonded together in such manner that no vertical joint in any one

course shall be within 100 mm of a similar joint in the course immediately above or below.

Sufficient through bonders shall be provided as directed by the Architect. Alternate courses of

walling at all angles and intersections shall be carried through the full thickens of the adjoining

walls. All walling shall be built up entirely solid in blocks, without voids, allowance being made

for joints 10 mm thick only. All pretends reveals and other angles of the walling shall be built

strictly true and square.

Wall reinforcement

C Where so specified hollow block walls shall be reinforced vertically with 10 mm diameter mild

steel bars built into the cavities of the blocks at 400 mm centre, unless otherwise specified. All

bars in walls to have a minimum lap of 350 mm.

D Prices for walling described as reinforced must include for all extra cost involved in slotting

blocks over the vertical reinforcement.

Filling of Hollow Blockwork

E All cavities where specified and shown above ground and all cavities below ground level shall be

filled in with solid concrete of the mix described and placed and consolidated in sections not

exceeding 1190 mm in height

F In reinforced walls the filling shall be carefully compacted around reinforcement.

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WALLING (CONTD)

Blocks to be wetted

A All concrete blocks and stone walling shall be well wetted before being laid and the top of

walling where left off shall be wetted before re-commencing building. Walls to be kept wet three

days after building

Mortar

B Mortar to be used for all walling work shall be composed of 1 part of Portland cement to one part

lime to six parts of fine aggregate measured by volume in specially prepared gauge boxes and

thoroughly mixed dry on clean and watertight mixing platforms, with water added afterwards

from a can with a fine rose until all parts are completely incorporated and brought to a proper

consistency and then used within 30 minutes of mixing.

No partially or wholly set mortar will be allowed to be used or re-mixed

Fair Face Walling

C Where walling is to be finished with a fair face, the concrete blocks are to be selected for freedom

from defects and the joints raked out as the Works proceed and flush pointed with a neat joint in

cement mortar.

Joints for Walling

D The blocks shall be bedded and jointed in cement mortar as described with beds and joints 10 mm

thick, fully flushed up and grouted solid as the work proceeds. Joints shall be raked out where the

surface of walling are to be plastered.

E All walling shall be properly protected while mortar is setting as the Architect shall direct.

Building Walling

F All walls throughout the Works shall be carried up evenly in 200 mm courses, no part being

allowed to be carried up more than 800 mm higher at one time than any other part and in such

cases the jointing shall be made in long steps so as to prevent cracks arising and all walls shall be

levelled around at each other.

Putlog Holes

G Putlog holes shall be carefully, properly and completely filled up on completion of walling work.

PREAMBLES

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ITEM

WALLING (contd)

Rough cutting, etc

A The Contractor shall allow in his prices for the walling which is measured net herein, for all

ordinary rough cutting, bonding, plumbing angles, forming reveals and fitting up to underside of

concrete beams, slabs and lintels etc.

Stone Pitching

B The ground to receive pitching shall be well compacted and the stones, which shall be flat bedded

and not less than 230 mm either way along the bearing surface, shall be punned to the required

falls and inclinations so that neither wedges or spalls are required to keep the pitching rigidly in

place. The joints shall be no more than 13 mm thick and shall be solidly filled with 1:3 cement

mortar.

C Stone for pitching shall be obtained from approved quarries. It shall be hard, sound, durable and

clean,

Stone for walling

D Stone for walling shall be from an approved quarry, roughly square having a characteristic

strength of not less than 10.00 N/mm2 built random and uncoursed in mortar as described. The

stone shall be well bonded with a minimum of one good bond or through stone evenly spaced to

each square metre. All cavities and joints in stonework are to be filled in and flushed up solid

with mortar.

E Jointing and pointing is as detailed or instructed.

Precast Screen and pointing is Lourvre Block Walling

F Precast concrete screen blocks shall be manufactured in concrete of 30.0 N/mm strength using 10

mm aggregate, the blocks shall be 390 and 190 mm long x 190 mm high and 150 mm bed in

accordance with detail drawing and finished fair on all surface and bedded, jointed and pointed in

cement mortar with a neat flush joint.

G Precast concrete louver block shall be similar concrete, similarly jointed and pointed and

constructed to detail drawing.

Damp Proof Course

H Damp proof course shall be hessian based bituminous felt to BS 743 type 5A laid on including a

levelling screed of cement and sand and lapped 230 mm at joints.

PREAMBLES

3/20

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ITEM

DRAINAGE

Generally

Preambles to other sections

A The preambles contained in other sections of this document shall apply equally hereto where

applicable, so far as is consistent with the clauses following.

Notices

B The Contractor shall give all requisite notices. Uncoloured plans will be supplied by the

Architect at the Contractor’s request.

Drainage By-Laws

C All the Works shall comply with the requirements of the drainage by-laws made by the Local

Authority and shall be executed to the satisfaction of the Architect and the Local Authority.

Inspection

D The Contractor shall give written notice to the Architect for the purpose of inspection and

measurement, whenever sections of :-

(a) excavations are completed

(b) concrete beds are laid

(c) drains are completed

and no further work shall be executed until each stage of the work has been inspected.

Levels of Existing Drains

E The contractor shall check the invert levels of existing drains, sewers and manholes before laying

new drains, and shall notify the Architect immediately if the declared invert levels are found to be

inaccurate.

Materials

Pitch Impregnated Fibre Drain pipes, Couplings and Fittings

F Pitch impregnated fibre drains, couplings and fittings shall comply with BS 2760

UPVC Pipes and Fittings

UPVC pipes and fittings shall comply with BS 3506 class to be obtained from a manufacturing

source approved by the Architect in writing.

PREAMBLES

3/21

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ITEM

DRAINAGE (contd)

Materials (contd)

Span Cast Iron Pipes and Cast Iron Fittings, Gullies, etc.

A Spun cast iron drain pipes shall be coated centrifugally cast (spun) iron pipes complying with BS

1211 Class B.

B Fittings, Gullies, etc., shall be of coated cast iron and shall comply with BS 1130.

Concrete pipes and fittings

Concrete pipes and fittings shall comply with BS 556. They shall be reinforced, and of sulphate

resisting cement if specified.

Manhole Covers and Road Gratings

C Manhole covers and road gratings and frames shall comply with BS 497.

Step Irons

D Step irons shall be galvanized malleable cast iron complying with BS 1247

Mesh Reinforcement

E Mesh reinforcement shall be steel fabric complying with BS 1221 Part A or BS 4483

Workmanship

Setting out

F The contractor shall set out all drains in accordance with the drawings, and provide all profiles,

etc., necessary for the execution of the work.

Excavation

G The bottoms of all excavations shall be trimmed and consolidated to the correct levels.

Unauthorized excavations below the required levels shall be filled with concrete of the same

composition as for drain beds, at the contractor’s expense.

H Where the bottom is insufficiently firm, the contractor shall excavate until, in the Architect’s

opinion, a firm bottom is obtained and the level shall be made up with concrete of the same

composition as for drain beds. Particulars of such traditional work shall be agreed with the

Architect’s representative before the work is covered up, otherwise no claim in this respect will

be entertained.

PREAMBLES

3/22

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ITEM

DRAINAGE (contd)

Workmanship (contd)

Planking and Strutting

A Care shall be taken not to undermine the foundations of the buildings and if so directed by the

Architect, planking and strutting shall be left in, or other means adopted to protect the

foundations. Details of such additional items shall be agreed with the Architect’s representative

before the work is covered up, otherwise no claim in this respect will be entertained.

Backfilling

B Trenches for pitch impregnated fibre or UPVC pipes shall first be filled with selected screened

excavated material carefully hand-tamped between the pipe and sides of the trench, followed by

150 mm – 200 mm of similar, material before the general filling is carried out.

C Trenches for concrete or cast iron drains shall first be filled to a depth of 300 mm with selected

fine material carefully hand-packed around the pipe. On no account shall materials be tippen into

the trench until the first 300 mm has been complete.

D Filling shall be continued in layers not exceeding 300 mm thick, well rammed and, if necessary,

watered.

Laying drains

E Drains shall be laid truly straight on line and gradient with sockets upstream and the full bore

shall be unobstructed.

Pitch Impregnated Fibre Drains

F All hard obstructions shall be removed from trench bottoms before laying pitch impregnated fibre

pipes. The pipes shall be bedded in sand and laid and jointed in accordance with appendix ‘C’ to

BS 2760.

UPVC Drains

G UPVC drain pipes shall be laid and jointed with solvent welded joints entirely in accordance with

the manufacturer’s instructions.

H Pipes shall be bedded in sand after all hard obstructions have been removed from trench bottoms.

PREAMBLES

3/23

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ITEM

DRAINAGE (contd)

Workmanship (contd)

Cast Iron Drains

A Cast iron drains shall be laid on concrete beds where specified or shown on the drawings and

shall be jointed with a gasket of hemp, well caulked, to a depth of 30 mm for 100 mm pipes and

40 mm for larger pipes, and remainder of the socket shall be filled with molten lead or lead fibre

solidly caulked.

B Connection of iron to concrete drains shall be jointed as described for concrete drains.

C Cast iron drains fixed to walls or beams shall be supported on brackets at 1350 mm centres.

D Gullies, outlets, etc., or drains under concrete floors shall be set in position at correct levels

before the floors are laid.

Concrete Drains

E Concrete drains shall be jointed with one turn of tarred gaskin, well caulked and the remainder of

the socket filled with cement and sand (1:3), finished with an angle fillet around the pipe. All

surplus mortar shall be removed from the inside of the pipe with a badger. Where pipes are

sulphate resisting, the jointing mortar shall contain sulphate resisting cement.

Concrete Beds, Haunches and coverings

F Where specified or shown on drawings, drains shall be laid on concrete, (Grade D-40 mm

aggregate), beds 100 mm thick, 400 mm wide for 100 mm diameter drains and 450 mm wide for

150 mm diameter drains. The concrete shall be haunched up both sides of the barrel to give

lateral support.

G Where drains, other than cast iron drains, are laid under buildings or pavings carrying vehicular

traffic, they shall be completely surrounded in concrete, (Grade D-40 mm aggregate), 150 mm

thick (i.e. 400 mm x 400 mm overall for 100 mm pipes and 450 mm x 450 mm overall for 150

mm pipes). Where directed, drain beds shall be reinforced.

H Gullies shall be surrounded in concrete Grade D-40 mm aggregate minimum 150 mm thick all

round.

Sleeves

J All drains passing through walls foundations shall have sleeves of cast iron pipes of sufficient

size to allow a clearance round the drain.

PREAMBLES

3/24

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ITEM

DRAINAGE (contd)

Workmanship (contd)

Benching

A Benching in bottom of manholes shall be concrete (Grade C – 40 mm aggregate) to falls of not

less than 10 to channels finished with cement and sand (1:2), 25 mm thick, trowelled hard and

smooth with all angles rounded.

Bedding and Sealing Covers and Frames

B Frames to manhole cover shall be bedded in cement mortar (1:3), and the covers in grease and

sand.

Testing

C All drains and manholes shall be tested for water-tightness and straightness to the satisfaction,

and in the presence, of the Architect and Local Authority. Drains shall be filled with water to a

head of 1.50 metres and are to be tested in sections agreed with the Architect.

(a) after jointing

(ii) After haunching and backfilling

(iii) After completion of the works

D The contractor shall provide all necessary testing apparatus and shall carry out such other tests as

are required by the Architect and the Local Authority.

Clean and Flush all Drains

E All drains, gullies, manholes, etc., shall be cored, cleaned and flushed on completion.

Method of Measurement

F Where not otherwise stated, the starting level for trench and manhole excavation shall be:-

(i) The formation level in areas where the site is excavated to reduce levels.

(ii) existing ground level in areas where no excavation is required, or where filling is

required.

G The depths of all the trenches in the following description lie within the same 1.50 metre stages as

the average depths stated.

H Prices for excavating pipe trenches shall be deemed to include keeping them free from general

water (i.e. all water except spring or running water).

PREAMBLES

3/25

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ITEM

DRAINAGE (contd)

Workmanship (contd)

Method of Measurement (contd)

A Notwithstanding the provisions of SMM Clause V.7 (a) to (c) the descriptions of excavating

manholes, yard gullies, septic tanks and soak pits shall be deemed to include grading bottoms,

planking and strutting, return filling and compacting, disposal of surplus soil and keeping

excavation free from water.

B Price for building pipes into manholes shall include for building-in on rake where necessary.

C Prices for concrete beds, benching and coverings for pipes laid in trenches, shall be deemed to

include for any necessary formwork. Formwork required for beds, etc., for pipes above ground,

and for casing to vertical pipes, is referred to in the descriptions of such items.

D Prices for all gullies shall be deemed to include for all necessary excavation, return filling,

disposal of surplus excavated material, planking and strutting, and trimming and ramming

bottoms.

PREAMBLES

3/26

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ITEM

EXTERNAL PAVINGS

Generally

Preambles to Other Bills

A The preambles contained in other sections of this document shall apply equally to this section so

far as is consistent with the following clauses.

Materials

Soil for Planted Areas

B Soil for planted areas shall be vegetable soil free from roots and rubbish and treated with weed

killer to prevent the growth of weeds.

Sand for filling under footpaths

C Sand for filling under footpaths shall be clean, dry, pit or river sand, free from vegetable soil,

roots and rubbish.

Crusher Dust for Sub-base Course of Macadam Paving

D Crusher dust shall be from an approved source and be free from clay or other deleterious matter.

Stone for base course to macadam paving

E Stone for base course to macadam paving shall be 40 mm gauge, clean and hard, and free from

clay or other deleterious matter.

Blinding for Stone Base Course

F Blinding for stone base course shall be 4 mm gauge hard stone chippings, free from clay, dust or

other deleterious matter.

Precast Paving Slabs

G Precast paving slabs shall comply with BS 368 except for sizes.

Kerbs

H Precast concrete kerbs shall comply with BS 340, and shall be finished true and smooth on all

exposed faces.

Prime Coat for Macadam Paving

J The prime coat for macadam paving shall be bitumen grade M.C.I

PREAMBLES

3/27

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ITEM

EXTERNAL PAVINGS (contd)

Workmanship

Bitumen for surfacing

A The bitumen for surfacing shall be made from 500/700 grade bitumen.

Generally

B The sub-grade, sub-base and base courses for roads and parking areas shall be prepared and laid

at a convenient time before completion of the Contract, as shall be agreed between the Architect

and the Contractor, together with their kerbs and foundations.

C The wearing course shall be applied at a later date, and prior to laying, the base course shall be

made good in accordance with the requirements specified herein. The contractor shall make good

at his own expense any damage to kerbs.

Surveying

D The Contractor shall verify all dimensions and levels prior to the commencement of the work.

E All surveying necessary for the accomplishment of the work shall be done by the contractor at his

own expense, and he shall give notice of his intention to carry out such work in order that

arrangements can be made for supervision and checking. The contractor shall also provide,

without extra charge, all necessary instruments, appliances, labour and any other required for

checking the survey work.

F The Contractor shall make all necessary surveys using given bench marks as reference points.

These bench marks he shall carefully preserve.

G The Contractor shall draft, in accordance with these surveys, all plans and drawings which are

necessary for the completion of the work, and shall complete these plans and drawings to the

Architect for approval in writing.

Levels, Falls, Cross falls and Cambers

H The works shall be executed to the levels, falls cross falls and cambers shown on the drawings,

and shall provide camber gauges and straight edges for checking to ensure that the surfaces are

within the following tolerances:-

PREAMBLES

3/28

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ITEM

EXTERNAL PAVINGS (contd)

Workmanship (contd)

A Accuracy (contd)

(a) Sub-grade – The camber or cross fall shall not vary more than 20 mm from that shown on the

drawings. In the longitudinal direction the variations from a three metre straight edge placed

parallel to the centre line of the road shall not exceed 12 mm.

(b) Base – The camber or crossfall shall not vary more than 12 mm from that shown on the

drawings. The Variation on the longitudinal section shall be as above for sub-grade.

Sub-grade

B The sub-grade shall be shaped to the required falls and cambers and any depressions filled with

approved materials having a minimum C.B.R of 8%. This value shall be obtained at optimum

moisture content and compacted to 100% of the maximum dry density as determined by BS 1377.

The contractor shall carry out standard compacting tests on the sub-grade in accordance with Test

No. 10 of BS 1377. Such test shall be taken at 30 metre intervals. The Standard of compaction

required shall be 98% of the maximum dry density as determined by the Test No. 9 of BS 1377.

C The sub-grade shall be approved by the Architect before any materials to be used in the

construction of the carriageway are deposited or laid.

Sub-base Course

D The sub-base shall consist of a layer of crusher dust finishings to the thickness specified after

compaction. The bed shall be watered as necessary and rolled to produce a smooth and uniform

surface with no irregularities.

Base Course

E The base course shall consist of a layer of stone in which the interstices shall be filled by the

application of crusher fines after the stone is in place, to finish to the thickness specified after

compaction. The base course shall not be blinded with crusher fines, but develop, they should be

corrected by loosening the material at these places and adding or removing material and

recompaction until the surface is smooth and uniform with no irregularities.

PREAMBLES

3/29

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ITEM

EXTENAL PAVINGS (contd0

Workmanship (contd)

Application of Bitumen

A The plant used by the contractor for transporting, heating, and spraying bitumen shall be in

suitable rubber-tyred units and shall ensure adequate and uniform heating without the

introduction of steam or moisture, and giving rise to the cooking or burning of the bitumen, and

shall be fitted with a thermometer and heating control. Distributors shall be equipped to provide

a constant rate of application per square metre of surface and there shall be visible speedometer

indicating the speed of the vehicle in meter per minute.

B Spray bars shall be capable of spreading the bitumen evenly to the full width of the work. The

bitumen shall be heated to the temperature specified below and sprayed on the clean surface of

the base at the rates specified.

C Application temperatures shall be in accordance with those recommended by the manufacturer, or

where this information is not available, they shall be as follows:-

Bitumen Grade Spraying Temperature C

M.C.I 54 – 80

500/700 124 - 149

Prime Coat

D Prior to the application of the prime coat, the surface of the base shall be swept clean of dust and

foreign materials to the satisfaction of the Architect. Approximately 30 minutes before applying

the bitumen the surface of the base shall be lightly sprayed with water.

E The prime coat shall be applied at the rate of 0.70 litres per square metre.

Wearing Course

F After application of the priming coat, and where directed and approved by the Architect, the

contractor shall lay bitumen type 500/700 spread at the rate of 3 square metres per 5 litres

immediately followed by spreading dry, clean approved 12 mm chippings at the rate of 130

square metres per cubic metre, rolled six to eight passes of a six to eight tonne roller. A second

and similar surfacing layer shall be laid at the end of the defects liability period

PREAMBLES

3/30

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ITEM

EXTENAL PAVINGS (contd0

Workmanship (contd)

Wearing course (contd)

A Alternatively, where specified, the wearing course shall consist of a premix macadam carpet of

500/700 grade bitumen and approved quality aggregate graded and mixed together prior to laying

in the proportions and by the methods given in BS 1621 table 4, laid to finish to the thickness

shown after compaction. The compaction shall be achieved with six to eight passes of a six to

eighth tonne roller

B No bitumen spraying shall be carried out when the carriageway surface or the aggregate are wet,

without the prior approval, in writing, of the Architect who may allow such work to proceed by

the use of an approved adhesive agent at the Contractor’s expense.

Murram Roads

C Murram roads shall be laid in layers not exceeding 150 mm compacted thickness, to finish

compacted to the thickness shown on the drawings.

D Each layer shall be watered, rolled and compacted as previously described thickness, herein to

produce a smooth dense surface free of all irregularities.

Laying Precast Paving Slabs

E Precast paving slabs shall be bedded on a sand bed compacted to the thickness specified with 6

mm wide joints, filled and pointed with cement mortar coloured to match the colour of the slabs

and recessed 5 mm deep. The paving shall finish true and even to the falls shown on the

drawings with no surface irregularities.

Grassing

F Grassing shall be carried out by a specialist using approved local grass. Prices for grass shall

include for tending, watering, cutting and keeping weed free for a period of twelve months, to

produce a dense and healthy weed free grass carpet.

PREAMBLES

3/31

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A

PRICING OF PREAMBLE CLAUSES

If, in the opinion of the tenderer, any Clause in the foregoing Preambles has a

monetary value requiring pricing, then he is required to list all such items below using

the page and item reference and insert the price in the money column, carrying

the total amount to the main summary.

Page Item Reference

KSHS

CARRIED TO MAIN SUMMARY KSHS.

PREAMBLES TO TRADES

3/32

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BILL No. 4

DRIVEWAY AND PARKING

Page 58: BILL NO. 2 GENERAL CONDITIONS & PRELIMINARIES...A B C BILL NO. 2 GENERAL CONDITIONS AND PRELIMINARIES GENERALLY The following clauses are given for the guidance of the contractor in

Item Description Qty Unit Rate Amount

BILL No. 4

DRIVEWAY AND PARKING

ELEMENT No. 1

ROAD WORKS

SITE CLEARANCE AND TOP SOIL STRIPPING

A Clear site including removal of hedges bushes, trees (except those

designated to remain by the engineer) and other vegetation and

objectionable materials in accordance with the specifications.2550 SM

EARTHWORKS

NOTE: No separate payment shall be made for the haulage of

surplus or unsuitable material and the cost of such haulage for

disposal shall be include in the rates.

B Excavate to removal topsoil average 400mm depth and cart away

from site 1020 CM

C Cut in soft material to spoil as directed by the Engineer. 510 CM

D As item 5.02 but in hard material. 128 CM

E Compact existing ground to at least 95% MDD (AASHTO T.99) 2550 SM

F Selected imported filling materials deposited and consolidated in

150 mm layers to make up levels under road compacted to 95%

MDD (AASHTO 180) 1020 CM

G 300 mm Bed of hand packed stone base laid to falls and chambers

well rolled and compacted as before described 2550 SM

FINAL SURFACE TREATMENTS AND DRESSING

H Provide and lay in herringbone bond, 80mm thick heavy duty

interlocking blocks with a minimum crushing strength of 45N/mm2

as manufactured by M/s Bamburi Limited or any approved

alternative 2550 SM

J 50mm thick murram blinding 2550 SM

K 50mm thick (average) quarry dust to receive cabro paving blocks 2550 SM

L Ditto but sand bed, consolidated to fill cabro bond voids 2550 SM

M Provide and place precast concrete channel blocks of

250mmx125mm to Road surfaces, inclusive of excavation, laying

and jointing, concrete bedding and haunching etc. as shown in the

drawings. 317 M

Carried to collection K.Shs

4/1/1

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Item Description Qty Unit Rate Amount

A As Item 20.09 but curved kerbs. 10 M

B As Item 20.09 but 125x100mm PC channel 334 M

C As Item 20.10 but curved 10 M

DRAINAGE

NOTE: No separate payment shall be made for the haulage of

surplus or unsuitable material and the cost of such haulage for

Open Channels

D 600mm diameter half round IBD Invert block drains drainage

channels with and including insitu concrete 1:2:4 surround,

Including excavations, trimming, shaping and compaction.150 LM

ROAD FURNITURE

(rate Only)

Provide and erect permanent road signs where directed by the

Engineer in accordance with the Specifications as follows:

E (i) Warning signs - 750mm size. 1 No

F (ii) Priority signs - 1000mm size. 1 No

G (iii) Standard informatory signs - 400mm x 300mm size. 1 No

H (iv) Non-standard informatory signs less than 1m2. 1 No

J (v) As item (iv) but equal or more than 1m2 but less than 2m2.

1 No

K (vi) As Item (iv) but equal or more than 2m2 but less than 4m2.

1 No

L Road marking in yellow paint-line 100mm 150 LM

M Road marking in white paint-line 100mm wide. 5 LM

N As Item 8.03 but 400mm wide give way lines. 5 LM

Carried to collection K.Shs

COLLECTION

Page 4/1/1

Page 4/1/2

TOTAL AMOUNT OF ELEMENT No. 1

ROADWORK'S

Carried to Summary of Bill No. 4 K.Shs

4/1/3

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Item Description Qty Unit Rate Amount

ELEMENT No. 2

RETAINING WALL

NOTE: No overhaul will be paid for these items as they shall be

deemed to have been included in the contractor's rates.

A Excavate for foundation trenches not exceeding 1.5m deep

commencing from reduced level. 190 M3

B Excavate for pits for column bases Not exceeding 1.5m deep

commencing from reduced level 152 M3

C Extra -over excavation in any position for excavation in rock 34.2 M3

D Remove surplus excavated materials from site 163 M3

E Return, fill in and well ran selected excavated materials round the

excavate 213.2 M3

Concrete Works:

Mass concrete class 15-20mm aggregate in:

F 50mm thick blinding under strip foundations 190 M2

G Ditto in column bases 152 M2

Guaranteed strength vibrated reinforced concrete class 2520mm

aggregate in ;

H Strip foundations 38 M3

J Column bases 46 M3

K Columns 22 M3

Expansion joints

L 20 mm Flexel or other equal and approved expansion joint

material

4 LM

Reinforcement

High yield square twisted bars to B.S 4461 in:

M T8 bars 875.52 KG

N T10 bars 977.9 KG

O T12 bars 966.4 KG

Carried to collection K.Shs

4/2/1

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Item Description Qty Unit Rate Amount

Sawn formwork to :

A Sides of strip foundations 127 M2

B Sides of column bases and stubs 91 M2

C Sides of columns 146 M2

Walling

Solid Concrete block walling in cement and sand (1:3) mortar in:

D 200mm thick walls reinforced with T12 and including 20swg x

25mm wide hoop iron in every alternate course507 M

2

Carried to collection K.Shs

COLLECTION

Page 4/2/1

Page 4/1/2

TOTAL AMOUNT OF ELEMENT No. 2

RETAINING WALL

Carried to Summary of Bill No. 4 K.Shs

4/2/2

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Item Description Qty Unit Rate Amount

ELEMENT NO. 3

PARKING LIGHTING

Supply, install and set to work the following: -

A Supply and install a 8.0 m street lighting column fabricated from

class column fabricated from class B steel galvanized pipes complete

with streetlight single arm side entry complete with excavation and

concrete base to fix to ground 14 No.

B Supply and install 150W high pressure Philips green vision exceed

led street lights as BRP372 14 No.

C Cut-out complete with gland plate, 5Amps HRC fuse type Henley 14 No.

D 2.5sq mm twin + earth cable from cut out to LAMP 2 LM

E 4way SPN MCB consumer unit as merlin Gerlin 1 No.

F 10Amps mcbs 2 No.

G 40Amps d.p contactor 2 No.

H 40Amps current operated earth leakage circuit breaker with 0.5

Amps leakage current rating as Merlin Gerlin 2 No.

J Photocell kit complete with socket, bracket as Thorn QPK mounted

at roof level 2 No.

K Supply and wire normal by-pass circuit for photocell system

complete with retractable switch 2 No.

L Allow for trenching 300x600mm deep for street lighting and to lay

L.V power cables. Rate to include and backflling300 LM

M Supply and lay 3c 6sq mm pvc/swa/pvc cu cable. Rate to include

warning tape and backflling 400 LM

N Earthing comprising of a 6mm2 earth lead and 1800mm long by

15mm diameter copper earth electrode with a driving tip and clamp

in a 300mm by 300mm concrete manhole with a removable cover.1 No.

O Cable glands for street lighting cable 1 ITEM

TOTAL AMOUNT OF ELEMENT No. 3

PARKING LIGHTING

Carried to Summary of Bill No. 4 K.Shs

4/3/1

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Item Description Qty Unit Rate Amount

BILL No. 4

DRIVEWAY AND PARKING

ELEMENT No. 1: GENERAL ROAD WORKS 4/1/3

ELEMENT No. 2: RETAINING WALL 4/2/2

ELEMENT No. 3.: PARKING LIGHTING 4/3/1

TOTAL AMOUNT OF BILL No. 4

DRIVEWAY AND PARKING

CARRIED TO MAIN SUMMARY

4/S/1

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BILL NO. 5

PRIME COST AND PROVISIONAL SUMS

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Item Description Qty Unit Rate Amount

BILL NO. 6

PRIME COST AND PROVISIONAL SUMS

PROVISIONAL SUMS

CONTINGENCY

A Allow the provisional sum of Kenya shillings Two Million (K.Shs.

2,000,000/-) only for contingencies Item

TOTAL AMOUNT OF BILL No. 6

P C & PROVISIONAL SUM

Carried to Main Summary K.Shs

6/1

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MAIN SUMMARY

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Item Description Qty Unit Rate Amount

A BILL No. 1 TENDER INSTRUCTIONS 1/67

B BILL No 2: PRELIMINARIES 2/22

C BILL No 3: SPECIFICATIONS 3/32

D BILL No. 4 DRIVEWAY AND PARKING 4/S/1

F BILL No. 6 PROVISIONAL SUMS 6/1

TOTAL CARRIED TO FORM OF TENDER

CONTRACTOR'S SIGNATURE …………………………

NAME ………………………………………………………

ADDRESS …………………………………………………

DATE …………………………………………………….

WITNESS SIGNATURE …………………………………..

NAME ……………………………………………………..

ADDRESS ………………………………………………….

DATE …………………………………………………….

M/S/1

PROPOSED 112 PARKING BAYS TO SERVE THE PROPOSED COMMERCIAL

DEVELOPMENT ON PLOT LR. No.. EMU/BLOCK 2/50/1 ELDORET TOWN