Max Dia Of Steel Bars In Slab

The diameter of bar generally used in slabs are.

Max dia of steel bars in slab.

S min 0 0018 for f y 60 000 psi. Thickened edges add more restraint to drying shrinkage and cost more. D slab thickness 2 side clear cover dia of bar 150 50 12 88 mm. Minimum spacing of bars in slab the minimum spacing between two reinforcement bars should be at least equal to the maximum coarse aggregate dimension plus a margin of 5 mm.

Reinforcing steel gives slabs on grade adequate strength at the joints. 6 mm 8 mm 10 mm 12mm and 16mm. The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab. Ii the maximum spacing between two secondary parallel bars shall be 5dor 450 mm or whichever is less.

The minimum ratio of required reinforcement is. The main bars are used in short span and cross bars are used in long span. F min 0 0015. The presence of re bar or wwf in a slab on grade increas es confidence in the ability of.

F min 0 0025. This allows the de signer to maintain a constant slab depth without thickening at joints or edges. Suppose the steel bars with diameter 12 mm main bars in horizontal direction and 10 mm cross bars are used in the slab in vertical direction. The temperature reinforcement shall not be less than inch at nine 9 inch center to center.

Maximum spacing of main bar is restricted to 3 times effective depth or 300 mm whichever is less. Length of main bar 2960 0 42 x 88 24 2973 mm or 2 97 m. Main bars of 12 mm and cross bars of 10 mm are applied in the slab. Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars.