By using IS code(456-2000) for reinforced cement concrete.
Formula to calculate length of spiral reinforcement in columns
25kg to 50kg /m3 of concrete
maximum spacing assording to IS 456 = 300mm
40 times diameter
The amount of steel required in concrete as reinforcement is measured using a formula that calculates the amount of pressure that will be put on the concrete. There are different formulas to identify the minimum and the maximum amount of needed steel, depending on if you are making a beam, slab, or column.
Formula to calculate length of spiral reinforcement in columns
The minimum covering of reinforcement for roof slab is 30mm
25kg to 50kg /m3 of concrete
3000 psi
maximum spacing assording to IS 456 = 300mm
minimum is less
40 times diameter
The amount of steel required in concrete as reinforcement is measured using a formula that calculates the amount of pressure that will be put on the concrete. There are different formulas to identify the minimum and the maximum amount of needed steel, depending on if you are making a beam, slab, or column.
it would depend entirely on the rebar design.....
diameter multiply by 20 times example: 8mm*20=160mm
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