The economy of reinforced
concrete design will be fully realized only when the reinforcements are
maintained at their designed position at all times. According to IS 2502-1963,
bars crossing each other where required, shall be secured by binding wire
(annealed) of size not less than 0.90mm, in such a manner that they will not
slip over at the time of fixing and concreting. Every compression bar shall be
tied at least in two perpendicular directions.
METHODS OF TYING REINFORCEMENT BARS
Quantity of binding wire
depends upon the nature of reinforcement. For every 10 sq.m slabs approximately
2.7 kg of 18 gauge soft black wire is required. For other works 1 kg per
quintal of steel may be recommended.
