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Technical Specification - Section 4 4.3 Reference to the standard Codes of Practice 4.3.1 The Contractor shall make available at site all relevant Indian Standard Codes of Practice, CPWD Specifications and IRS & IRC codes as applicable and other relevant British / German / American Standard.

4.3.2 Wherever Indian Standards do not cover some particular aspects of design / construction, relevant British / German / American Standards will be referred to.

4.3.3 In case of discrepancy among Standard Codes of practice, CPWD Specifications, special specifications and provision in sub-clauses in the NIT, the order of precedence will be as below:

i. Provision in N.I.T. ii. Special Specifications mentioned in the tender. iii. CPWD Specifications iv. Standard Codes of practice.
In case of discrepancy among Standard Codes of Practice viz. IRS, CPWD, IRC, IS, BS, DIN, MOST, the decision of Engineer will be final and binding.

4.3.1 The Contractor shall make available at site all relevant Indian Standard Codes of Practice, CPWD Specifications and IRS & IRC codes as applicable and other relevant British / German / American Standard. 4.3.2 Wherever Indian Standards do not cover some particular aspects of design / construction, relevant British / German / American Standards will be referred to. 4.3.3 In case of discrepancy among Standard Codes of practice, CPWD Specifications, special specifications and ARBT No. 1578/18 SVR Engineering Vs. DMRC Page No. 50 of 60 provision in sub-clauses in this NIT, the order of precedence will be as below:

i. Provision in N.I.T. ii. Special Specifications mentioned in the tender. iii. CPWD Specifications iv. Standard Codes of practice.
In case of discrepancy among Standard Codes of Practice viz. IRS, CPWD, IRC, IS, BS, DIN, MOST. The decision of Engineer will be final and binding.
41. It is not in dispute, the petitioner had used MS tubes at a spacing of 1.5m centre to centre horizontally and vertically to erect individual single frame scaffolding but it had connected the several individual single frame scaffolding with 1.0m length pipe. BOQ item 14.72 is silent about the length of the connecting pipe between the two single frame scaffolding. It is true that the diagram of double scaffolding system provided in the CPWD Specifications visually represents that the connecting pipe is of a shorter length than the length of the horizontal and vertical pipes of individual single frame scaffolding but in the Specifications, it is nowhere provided that the connecting pipe should be of 1.0m length. The petitioner has also annexed the diagram of double scaffolding as per CPWD Specifications as Annexure A20. Though, the petitioner has claimed that there was a rationale to provide shorter length of pipe to connect the individual single frame scaffolding to give more strength but it did not submit any design calculations to substantiate this rationale. It is true that the petitioner was bound to take all ARBT No. 1578/18 SVR Engineering Vs. DMRC Page No. 51 of 60 safety measures as contemplated under clause 56 & 57 of the Conditions of Contract, failure of which could entail penalty, which could even lead to blacklisting of the petitioner but since it was an engineering arrangement, so before erecting any scaffolding particularity in these circumstances, it should have got designed the scaffolding from a competent structural engineer, which in this case was neither got done by the petitioner nor by the respondent. According to the petitioner, 1.0m length of pipe connecting the individual single frame scaffolding would give more strength to the scaffolding but according to the respondent, the connecting pipe of 1.5m length would have been sufficient enough to connect the individual single frame scaffolding. In the absence of any structural design / calculation, no opinion can be expressed whether the connecting pipe of length 1.0m or 1.5m would have been sufficient to connect the individual single frame scaffolding. It is however true that in the diagrams of the double scaffolding i.e. Annexure A20, the length of the connecting pipe between the two single frame scaffolding is shorter than the length of the horizontal & vertical tubes of the single frame scaffolding.