PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

9.1 General.
Chapter : 9
Reinforcement
Reinforcement shall be either plain round mild steel bars Grade I as per IS:432
(Part-I) or medium tensile steel bars as per IS:432 (Part-I) or high strength
deformed bars as per IS:1786. Wire mesh or fabric shall be in accordance with
IS:1566. Substitution of reinforcement will not be permitted except upon written
approval from the Engineer.
9.2 Storage.
The reinforcement shall not be kept in direct contact with the ground but stacked on
top of an arrangement of timber sleepers or the like. If the reinforcing rods have to
be stored for a long duration, they shall be coated with cement wash before stacking
and/or be kept under cover or stored as directed by the Engineer. Fabricated
reinforcement shall be carefully stored to prevent damage, distortion, corrosion and
deterioration.
9.3 Quality.
a. All steel shall be of Grade I quality unless specifically permitted by the
Engineer. No re-rolled material will be accepted. If requested by the Engineer, the
Contractor shall submit the manufacturer’s test certificate for the steel. Random
tests on steel supplied by the contractor may be performed by the Engineer as per
relevant Indian Standards. All costs incidental to such tests shall be at the
contractor’s expense. Steel not conforming to specifications shall be rejected.
b. All reinforcements shall be clean, free from grease, oil, paint, dirt, loose mill
scale, loose rust, dust, bituminous material or any other substances that will destroy
or reduce the bond. All rods shall be thoroughly cleaned before being fabricated.
Pitted and defective rods shall not be used. No welding of rods to obtain continuity
GTS : General Technical Specification. Page 71