- Chairs shall be provided to keep the bars in position.
- Chairs shall be provided to maintain spacing between top and bottom reinforcement bar of Slab and Raft etc.
- Chairs to be spaced at nominal 1000 mm centers U.N.O.
- Dia of Chair Bar Recommended = hc/50 but not less than 12 mm.
T 1 & T2 Top Reinforcement Bar.
B1 & B2 – Bottom Reinforcement Bar.
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