ced at 130 mm on centers all throughout the beam length. Determine the maximum wu that the beam can carry based on the shear c
The rectangular beam with a span length of 7.2 m has an effective depth, d = 430mm and a width of 250mm. It has 2-legged 10mmØ stirrups spaced at 130 mm on centers all throughout the beam length. Determine the maximum wu that the beam can carry based on the shear capacity of the beam. Use fc' = 21MPa and Grade 40 rebars.
a. Adopt smaller of
S' : S'1 = Avfy / (0.062b√f'c)
S'2 = Avfy / (0.35b)
b. S" = (0.062/0.33) / S'1
c.
1. if S > S' ; ØVn = Ø 0.5Vc
2. if S"<S<S' ; Smax = least of S' or d/2 or 600mm
i. S> Smax ; ØVn = Ø 0.5Vc
ii. S< Smax ; ØVn = Ø (Vc + ( Avfyd / S ) )
3.
if S < S" ; Smax = least of S' or d/4 or 300mm
i. S> Smax ; Vs = 0.33√f'c bwd
ØVn = Ø (Vc + 0.33√f'c bwd)
ii. S< Smax ; ØVn = Ø (Vc + ( Avfyd / S ) )
Find:
1. Vc
2. s' and s''
3. smax
4. ØVn
5. Wu
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