Column size = 230mm×300mm
Length of beam = 15 feet
Dia of main bar used in beam
= 12mm
Number of bars = 4 nos
Diameter of stirrup bar = 8mm
Spacing of stirrup = 150mm
Total length of main bars = 15×4 feet
= 60 feet
Total length of main
bar in meter = 60/3.28 m
= 18.29 m
= 19 m
Total weight of main
bar = ((D×D)/162)×length
= ((12×12)/162)×19 kg
= 16.88 kg
= 17 kg
Number of stirrup bar = 15 /3.28 m
= 4.57 m
= (4.57/0.15)+1
= 32 nos
Cutting length of stirrup = 2(a+b)+hook length-(no of bend×2d)
a= breadth-(2×spacing)-(2d)
= 230-(2×25)-(2×8)
= 164mm
b = depth-(2×spacing)-(2d)
= 300-(2×25)-(2×8) mm
= 234mm
L = 2(164+224)+(2×10×8)-(3×2×8) mm
= 908mm
= 0.908 m
Total stirrup length = 0.908×32 m
= 29.05 m
Total weight of stirrup steel bar
= ((d×d)/162)×length
= ((8×8)/162)×29.05 kg
= 11.47 kg
= 12kg
Total steel bar required for beam
= 17+12 kg
= 29 kg ans.
Note: for more details information watch video link below.
https://youtu.be/FOPy6HZUHmg
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