Information for Tenderers summer holidays. FIDIC In order to - - PDF document

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Information for Tenderers FIDIC

Time for Completion

• The Contractor shall commence work on the Contract on a date to

be specified in a written order by the Employer acting through the Engineer, and shall fully complete the work within the time for completion stated in the Form of Tender from and including the date thereof. The specified time for completion shall be considered to include public, official, religious and summer holidays.

• In order to assure the completion of the work within the time

stated in the Contract the Engineer reserves the right to order the Contractor to employ more men or equipment or to expedite the work in any way he may deem necessary.

• The specified date for the Contractor to commence work

shall be no later than Sixty (60) calendar days from the Engineer's order to commence work. In this respect allowance

• f one month was considered necessary for the Contractor to

arrange the supply of the pipes and fittings and of the rest of the materials for the purposes of the contract.

Time for Completion

• The Engineer shall give to the Contractor the order to

commence work not later than 15 days after the date of the execution of the Contract unless the Employer specifically sanctions an extension of such period to 30 days.

Substantial Completion of Parts of the Work

• As soon as, in the opinion of the Engineer, the

Works or self-contained parts of the works, which can be put into operation as agreed by the Engineer, have been substantially completed and have satisfactorily passed any final test that may be prescribed by the Contract, the Engineer shall, as specified in Section 48 of the General Conditions, on receiving a written undertaking by the Contractor to finish any outstanding work during the Period of Defects Liability, issue such Certificate of Completion in respect of the Works, and the Period

• f Defects Liability shall commence from the date
• f such Certificate of Completion.

Period of Defects Liability

• The Period of Defects Liability, as specified in Section

49 of the General Conditions, shall be for a period of 78 weeks from the date of the Certificate of Completion, as specified in Section 48 of the General Conditions.

Progress Claims

• The Contractor shall submit to the Engineer, at the

end of each calendar month, a fully itemized statement showing the estimated value of the permanent work executed up to the end of the

• month. This shall be based on items and prices

shown in the Schedule of Items and Prices.

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Liquidated Damages

• In accordance with Section 47 (1) of the General Conditions,

should the Contractor fail to complete the works to the satisfaction of the Engineer within the time for completion specified in the Contract or the extended time allowed in writing by the Engineer, the Contractor shall pay to the Employer as liquidated damages the sum of Four Hundred Cypriot Pounds (C£400) in addition to the fees payable in respect of resident engineer(s) and inspector(s), for each calendar day that the works remain uncompleted after the time so specified or allowed.

• The total amount of liquidated damages payable by the

Contractor to the Employer in accordance with Sub-Clauses 47(1) and 47(2) shall not exceed the maximum amount of liquidated damages or 15 per cent of the Contract Price as stated in the Form of Tender.

Liquidated Damages

• As specified in the Clause 47 of the General

Conditions, deductions for Liquidated Damages due may be made from any money in the hands of the Employer, including retention money and Bank

• Guarantees. However, deductions for this purpose

shall not be made from retention money or Bank Guarantees until all funds available for work done have been used first.

Sub-Contractors and Suppliers

• The Tenderer shall give in sub-section 5 (i) of the

Form of Tender, the name and address of each proposed sub-contractor used in making up his tender, stating the portion of the work allotted to

• each. Only one sub- contractor shall be named for

each part of the work to be sublet.

• Tenderers are also required to indicate in the Form
• f Tender the manufacturers/ suppliers they

propose for the supply of materials.

• After this tender has been accepted by the Employer,

the Contractor shall not be allowed to substitute

• ther sub-contractors or manufacturers in place of

those named in his tender without written approval from the Engineer.

Temporary Advance for Mobilization

• An Advance in the amount of ten Percent of the

Tender Price will be available to the Contractor on submission of an irrevocable bank guarantee after execution of the formal contract. Repayment will begin

• n the first payment certificate after the total work done
• n the contract reaches thirty per cent of the total

Tender Price. Repayment from then on will be in equal monthly amounts so that it is all repaid by the end of the Time for Completion of the contract. Further details are available in Clause 60.(J) of Conditions of Contract, Part II - Conditions for particular Application.

Quantities

• The Quantities as set out in the Form of Tender are estimates
• nly, and their inaccuracy shall in no way affect the validity of the

Tender or any contract based hereon. The total amount for the various items set out in the Form of Tender, at the rates of prices inserted by the Tenderer, shall be stated in each case, but this figure is required solely for the purpose of facilitating the comparison of the various Tenders received and shall not be deemed to be the actual sum which is to be paid to the Contractor for the execution of the works. The actual sum to be paid to the Contractor whose Tender is accepted will be determined by measuring work actually done in accordance with the Contract and valuing it at the unit rates or prices inserted by the Contractor in the Form of Tender.

• The Bidders' attention is directed to the provision of Clause

52(3) of the Particular Specification under which the Employer reserves the right to vary the sum of works by up to 15% of the total Contract Price.

The specification includes many sections in order to cover all

• issues. It is divided into sections for example:
• Section 1:

General Clauses

• Section 2:

Clearing the Site

• Section 3: Excavation, Backfilling and Grading
• Section 4: Material supply and installation
• Section 5: Testing
• Section 6: Restoration and clean up
• Section 7: Concrete
• Section 8: Reinforcement
• Section 9: Payment

Specifications

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To note:

In the specification sections the Engineer can specify:

• the materials to be used,
• the method to be used for a certain work
• the requirements each material has to satisfy
• the standards each material has to satisfy (European

Standard, Cyprus Standard, British Standard etc)

• which tests are required to be carried out
• payment issues
• etc

Specifications

Section 1 - General Clauses

Drawings and Specifications

• The works are to be built of the materials and to the sizes,

dimensions and grades as called for in the Specifications and Contract Drawings and such other Drawings as may be added from time to time by the Engineer during the progress of the work.

• These Drawings are the Contract Drawings and are made

a part of this Contract. Additional drawings showing details in accordance with which the work is to be constructed will be furnished from time to time by the Engineer if found necessary and shall then become a part thereof. The Contractor shall be governed by figured dimensions, as given on the Drawings. Where required dimensions are not shown in figures, the Contractor shall obtain such portion of the work to which they refer. In every case detail drawings shall take precedence over general drawings. Where Drawings are not consistent with the text of the Specifications the text shall govern.

Construction Schedule

• Notwithstanding Clause 14 of the General Conditions, the

Contractor shall, within thirty days from the date of the Letter of Acceptance of his tender submit his proposed construction schedule to the Engineer for

• approval. This construction schedule shall show clearly in

weekly stages the proposed progress on the main items, structures and sub-trades of the Contract and shall indicate where applicable the labour, construction crews, plant and equipment to be employed.

• The Engineer may require the Contractor to revise his

proposed schedule at any time, as provided for in the General Conditions.

Hours of Work

• The Contractor may normally perform the work during

normal working hours from Monday to Friday provided that he so conducts his operations as not to create nuisance or disturb the peace unnecessarily and providing such hours meet with the approval of the

• Engineer. Whenever the Contractor desires to depart

from normal working hours he shall obtain the written approval of the Engineer at least forty-eight hours prior to the contemplated change in operations.

Hours of Work

• No Sunday or Saturday work will be permitted except

in the case of an emergency or if directed by the

• Engineer. As far as possible, the Contractor shall refrain

from working on days which are legal holidays within the area of the Contract. If he desires to work upon any such holidays, he shall request the written approval of the Engineer at least four (4) days in advance of such

• holidays. If the Contractor fails to give notice in

advance of any holiday or fails to obtain the Engineer's written approval for working thereon, such failure shall be considered as notification that no work on this Contract is to be done on such a holiday.

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Hours of Work

• Whenever, in the judgment of the Engineer, it may be

necessary or expedient to do work at night or on Sundays or on holidays or after or before the regular time of ending or beginning labour, such night or

• vertime work shall be performed by the Contractor

without additional or extra cost to the Employer beyond the price bid for the work.

Samples

• In addition to any specific provision in the Contract for the

sampling and testing of materials, the Contractor shall submit to the Engineer, as he may require, samples of all materials and goods which he proposes to use or employ in or for the Works. Such samples, if approved, will be retained by the Engineer. No materials or goods of which samples have been submitted, shall be used in the Works, unless and until such samples have been approved in writing by the Engineer.

• The Engineer may reject any materials and goods

which in his opinion, are inferior to the samples thereof previously approved and the Contractor shall promptly remove such materials and goods from the Site, at his

• wn expense.

Tests in General

• The Engineer may examine and may require to be

tested any materials or goods required in or for the Works such as he may decide from time to time. The Contractor shall arrange for the Engineer to have unrestricted access to the Contractor's, Sub-Contractor's and suppliers' premises for such purposes at all times.

• Various clauses of the Specification state the types of

test which the Contractor shall carry out for the control

• f the quality of the Works, together with the

frequencies at which each type of test shall be

• conducted. The Contractor's attention is drawn to the

fact that the frequencies of testing specified in the relevant clauses are intended to represent only a general guide. The Engineer's Representative shall be empowered to vary the frequencies at which tests are conducted should he deem this necessary for the proper control of the quality of the Works.

Specifications

Section 2 – Clearing the Site

Disposal of Materials

• All materials derived from the clearing,

demolition and grubbing operations shall become the property of the Contractor and shall be satisfactorily disposed of the site by the Contractor at his own expense.

Specifications

Section 3 – Excavation, Backfilling and Grading

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Bedding Materials

S ieve Size (m m ) P e rce n ta ge b y m a ss p a ssin g (% ) 2 5 1 00

• 1

00 12 ,5 75

• 9

9 6 .3 47

• 8

7 1 15

• 7

5 0,0 63 0-15

Bedding material shall be placed from 150mm below the invert of the pipe or 1/4

• f the outside diameter of gravity pipe – ODG for pipes greater than 600mm

diameter, to 300mm above the crown of the pipe in accordance with the Drawings. Bedding material shall be approved imported granular material and shall conform to the requirements of Table 3.12.A and Table 3.12.B below.

Excavated material S ie ve S iz e (m m ) P e rce n ta ge b y m a ss p a ssin g (% ) 8 1 00

• 1

00 5 6 9 8-10 4 80

• 9

9 2 50

• 9

1 30

• 7

5 4 15

• 6

1 0-35 0,0 63 0-15 Excavated material

No excavated material shall be used for backfilling without the written approval of the Engineer following examination of the test reports of the excavated material. Excavated material intended to be used for backfilling shall be free from cinders, ashes, refuse, vegetable and organic material. If following the conformity tests the excavated material is not considered as suitable for backfilling by the Engineer, the excavated material shall be transported and disposed of by the Contractor at the Contractor’s own expense to a disposal site approved by the Local Authorities. If the excavated material is considered unsuitable for backfilling, imported material shall be used, satisfying the requirements of Table 3.13.A and Table 3.13.B with no additional payment to the Contractor.

Section 8: Concrete

Work to be Done Under this Section, the Contractor shall supply all labour, materials, and equipment to complete concrete work shown, and/or specified herein. Unless otherwise stated, concrete shall be grade C30 expect benching to manholes which shall be C25. The specifications for concrete shall comply with Cyprus Standards, in particular with CYS 111:1990, CYS EN 12620:2002-1551 (includes Cor. 1:2004), CYS 152 par 1:1986, CYS 153:1996 and CYS EN 12390-3:2002.

Note: It is important apart from showing it in a drawing, to specify the requirements because as it is said earlier in the Contract, if there is discrepancy, the Contractor shall use the specification and not the drawing.

Section 8: Concrete

Tests Tests on concrete, Portland cement, and aggregates will be carried out by the Employer at his expense, in accordance with B.S. 1881. The Contractor shall provide samples of all materials, as required by the Engineer. Ingredients All concrete shall be composed of cement, fine aggregate, coarse aggregate, admixtures, as required, and water in such proportions as may be approved or directed by the Engineer. Cement Cement shall be ordinary Portland Cement conforming to CYS EN 197- 1:2000 Portland Cement. Cement will be inspected and tested by the Engineer at his discretion. Cement which has been rejected must be removed immediately by the Contractor at his own expense.

Section 8: Concrete

Aggregates Aggregates shall consist of natural sands and gravels, crushed rock, or

• ther inert substances having clean, uncoated grains of hard, strong,

durable, materials and conforming to CYS EN 12620:2002. The Contractor shall notify the Engineer of the source of each kind of aggregate that he proposes to use, not less than three weeks in advance of the concreting operations. The Engineer may request at any time from the Contractor, to perform such tests as to establish the conformity of the material used with CYS EN 12620:2002.

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Section 8: Concrete

Water Water shall be of potable quality, clean and free from oil, acid, alkali,

• rganic matter or any other deleterious substance according to BS

EN 1008:2002 and shall be supplied by the Contractor at his own expense. The source of the water shall be subject to the Engineer's approval. Non-potable water may be used only after approval by the Engineer.

Section 8: Concrete

Concrete Mix Design Mixes for the grades of concrete shown in the table below shall be designed by the Contractor who shall take into account the strength and durability requirements, the choice of aggregates, the required workability and the specified finished appearance of the concrete.

Concrete Grade Specified characteristic Strength 28 day (N/mm2) Min cement Content (kg/ m3) Water/Cement ratio (max) Slump mm (max) C10 C15 C20 C25 C30 10 15 20 25 30 210 250 290 320 340 0,70 0,70 0,55 0,55 0,55

• 80

80 80

Section 9: Payment

Financial deductions in case the premix does not comply with he requirements of the technical specifications In case the premix slightly deviates from the specifications and it is decided that it will be accepted, there will be financial deductions which will be calculated by using the following formula. A = a2/100 . b . c . d . where A = financial deductions a = deviation from the technical specifications b = coefficient which changes according to what deviates from the specifications c = purchase price of the premix per ton d = quantity affected in tons These financial deductions will consist of sums which should not exceed 50% of the cost of premix. The coefficient -b- can have the following values:

Section 9: Payment

UNIT RATES DEDUCTION FOR CONCRETE OF GRADE C10, C15, C20, C25, C30 Definitions: a = Average Strength of four consecutive test cubes at 28 days, or the strength

• f any tests at 28 days which do not comply with the

Specifications according to Clause 8.15C. In the case where neither the average nor the individual strength comply with the specifications then a will be taken to be the average strength. Ao= Percentage of the unit rate of concrete to be deducted

Section 9: Payment

C10 C 15 C 20 C25 C30 a N/m m

2

A

• %

a N /m m

2

Ao % a N /m m

2

Ao % a N /m m

2

A

• %

a N /mm

2

A

• %

12 17 23 28 33 11 7 16 7 22 3 27 3 32 3 10 10 15 10 21 6 26 6 31 6 9 17 14 17 20 10 25 10 30 10 8 25 13 25 19 17 24 17 29 17 7 35 12 35 18 25 23 25 28 25 6 49 11 49 17 35 22 35 27 35