Max Dia Of Steel Bars In Slab

Reinforcing steel gives slabs on grade adequate strength at the joints.

Max dia of steel bars in slab.

The main bars are used in short span and cross bars are used in long span. F min 0 0025. This allows the de signer to maintain a constant slab depth without thickening at joints or edges. The presence of re bar or wwf in a slab on grade increas es confidence in the ability of.

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. Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars. Suppose there is one slab with dimension 1 m x 1 m.

Length of main bar 2960 0 42 x 88 24 2973 mm or 2 97 m. The diameter of bar generally used in slabs are. Ii the maximum spacing between two secondary parallel bars shall be 5dor 450 mm or whichever is less. 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.

S min 0 0018 for f y 60 000 psi. 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. Find length of distribution bar clear span ly 2 x development length ld 5000 2 x 40 x 8 5640 mm or 5 64 m.

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. Thickened edges add more restraint to drying shrinkage and cost more. Main bars of 12 mm and cross bars of 10 mm are applied in the slab. The minimum ratio of required reinforcement is.