Transcription of DESIGN FOR SHEAR2008
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DESIGN FOR SHEAR2008
Dr. Mohammed E. Haque, PE. Shear DESIGN Page 1 of 6. DESIGN FOR SHEAR. Max. Shear due to loads, Vu DESIGN Shear Capacity, Vn Where = DESIGN Shear Capacity, Vn = [ DESIGN Shear strength of concrete, Vc + DESIGN Shear strength of reinforcement, Vs ]. Vn = Vc + Vs Therefore, Vu [ Vc + Vs ]. Shear force that concrete can resist without web reinforcement , Vc (ACI Eq. ) Vc = 2 fc' (bw x d ). where fc' is in psi; bw and d are in inches 1 Vu bw 45 0 d 1 section 1-1. d Fig. 1. Dr. Mohammed E. Haque, PE. Shear DESIGN Page 2 of 6. d s Number of stirrups crossing the crack, n=d/s Vu 45 0.
Section 1-1 d 1 d 1 V u 45 0 b w Fig. 1. Dr. Mohammed E. Haque, PE Shear Design Page 2 of 6 V s = A v x f y x n ⇒ V s = A v x f y x d/s (ACI Eq.11-15) ⇒ s = A v x f y x d / V s where A v = cross-sectional area of each stirrup has crossed the crack V u 45 0 Number of stirrups crossing the crack, n = d / s d s A ... Draw the beam and show ...
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