DESIGN OF GRADE BEAM LOAD CALCULATION

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DESIGN OF GRADE  BEAM
LOAD CALCULATION:

Brick  weight  =3.2×0.23×19 =13.98 KN/m
Self Weight Of Beam=0.23×0.45×25=2.58 KN/m
Total load=16.56KN/m
Factored load =16.56×1.5  =24.84 KN/m
Bending Moment =Wl2/8=111.78KNM
TO GET AST:
Ast= 50×(1-1√1-(4.6/20)×(111.78×106/1000×4502))/(415/20))
Ast=0.20 %
Ast=(0.20/100)×1000×450,     Ast= 900mm2
No of 16mmø bars=4
Provide 4Nos Of 16mmø as Main Reinforcement & 2.12mm ø bars @ top hanger bars
SHEAR REINFORCEMENT:
Vu= Wl/2.
Vu=74.52KN
Vus=(VU×b)-0.5bd,   Vus=22.77KN
Let us provide 2 Legged Stirrups 8mmø Stirrups
SV = , Sv=250mm
Maximum  spacing = 0.75d
                                = 337.5mm,Say 300mm
Let us Provide  2 Legged Stirrups  8mmø @ 300mm c/c
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