Steel Requirements for RCC Elements | Foundation Column beam and slab |

1. Main reinforcements (a) At least 2 bars and not more than 6 bars in one layer. (b) 8 or 10 mm dia. bars for slabs. For beams 12, 16, 20, 22, 25 or 36 mm bars may be used. (c) Minimum reinforcements pt, min = (d) Maximum reinforcement = 4.0% of gross area. (e) Bars less than 32 mm dia. may be bundled but bars larger than 32 mm shall not be bundled. 2. Shear reinforcement: (a) Should go around outermost tension and compression bars. (b) If no compression steel is used, provide two suspender bars of diameter 10 mm. (c) Maximum spacing shall be: 0.75 d for vertical shear reinforcement, and d for inclined stirrups at 45°. In no case it should not be more than 300 mm. (d) Minimum reinforcement shall be such that ≥ . (e) 6, 8, 10, 12 mm bars are used for shear reinforcement. (f) Usually 2 legged reinforcements are provided. Sometimes to avoid too close spacing 4 or 6 legged bars are provided. (g) If depth of beam exceeds 750 mm, side reinforcements are provided at the rate of 0.1% of web a...