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Shear strength of a rolled beam

Plastic shear strength of the web of a rolled I-section and the low-shear check. Reference: IS 800:2007 Cl. 8.4.

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Shear strength of a rolled beam: worked example sheet in Equation Pad with typeset equations and results.

Example only. This sheet shows one way to set out the check. It is not endorsed by the bodies that publish the design codes and does not reproduce them. Check every clause, value and assumption against your own copy of the current edition of IS 800 before you use it, and have the result checked by a competent person. See the disclaimer.

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# Inputs
f_yw := 250 MPa
gamma_m0 := 1.10
h_s := 300 mm
t_w := 7.5 mm

# Strength
A_v := h_s*t_w = mm^2
V_d := A_v*f_yw/(sqrt(3)*gamma_m0) = kN
V_u := 150 kN
V_u <= V_d =
V_u <= 0.6*V_d =
# TRUE: low shear, the bending strength is not reduced (Cl. 9.2.1).

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