Volume-IF - JantERmantER

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DCPL-K9AOl
blocks and details of their connectJons, supply and fabricate the same in
accordance with the approved shop drawings prepared by him.
For steelwOrk and meta! work, the Contrector shall deslgn all connections, inserts
for scaffolding, supply and fabricate all steelwork and metal work and fumish all
connection materials In accordance with approved shop drawings prepared by
him and/or as instructed by the Engineer, keeping in view the maximum utilisationof
the available sIZes ,!nd shapes for metal components.
2.5.0 Mateials to be used
2.5.1 General Requirement
2.5.2 Cement
All materials. whether to be inCOlPOlated in the work or to be used temporalily for
the construction. shall conform to the relevant IS specfflcations unless stated
otherwise and shall be of the quality approved by the Engineer.
Portland Cement shallpe as per the requirements laid down in IS:269.
2.5.3 Coarse Aggregate
Coarse aggregate shall be graded crushed or brok,en slone from approved
sources, free from Impurities and shall be screened free of dust and other
deleterious matter. It shall conform to IS:383 or IS:515 and shall be washed
clean, If nec:essaty:
The maximum sIZe of coarse aggregate for stack
superstructure shall be 25 mm down graded, unless otherwiSe stated (vide serial
5(b) of clause 3.03'cljl). Grading for a particular size shalf confonn to relevant IS
Codes and shall be such as to produce a dense Concrete of specified proportion
and strength and shall be of consistency that will work raadlly Into position
( without segregation. •
2.5.4 AneAggregate
(: Fine aggregate shall be river or pit sand. free from any clay, eerth. vegetable
matters, salt or oIherimpurities and shall be dean and fit for use, to the
~:,
satisfaction of the EngIneer. Sand ~ for the Wort< shall nomnally
.:" have a grading faDIng wiIIlin tile ~mils ~f one .of 1I1e thrae {/1'8de!l: Illentloned .
in the relevant.1S Specifications. . ..... '. '. '. • _'_
( 2.5.5 Water
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t. 2.5.6 Reinforcement
t
The water for both mixing and curing of concrete shall be clean. free from 011,
·acld, alkali. organic or olher deleterious substances. Contractor shall test Ihe
water as end when required by the Enginaer. .
Mild steel or Medium or High Tensne steel defonned bars specified for
reinforcement shall confonn to the latest relevant IS Specifications and shall
be of tested quartly under lSI CertifICation Scheme. The reinforcement shall
t. be free from any oil. foraign material or mill or rust scales. . .
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(PCACO-OO3.S805CSA24.dOe.doe) V.U-02lS-XXIV : 7
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