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Equal shearing stresses exist on both the vertical and horizontal planes through an element.

If φVc = 43 kip and Vu = 54 kip, are stirrups required?

Vertical stirrups are effective in beams resisting shear reversals, such as seismic loads.

Assuming Vs exceeds 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b1 = 30 in., b2 = 15 in., d1 = 4 in., and d2 = 45 in. There are three No. 6 longitudinal tension bars and No. 3 stirrups at 12 in. o.c.

Assuming Vs does not exceed 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b = 13 in. and d = 49 in. There are four No. 7 longitudinal tension bars and No. 3 stirrups at 12 in. o.c.

Axial compression tends to increase shear strength.

Teresa va a [q10] a caballo los fines de semana.

Compute φVn for the cross section shown. Assume f’c = 6,500 psi, fyt = 60,000 psi, b1 = 32 in., b2 = 14 in., d1 = 5 in., d2 = 14 in., and that there are three No. 9 longitudinal tension bars and No. 5 stirrups at 11 in. o.c.

A 115-mm-long beam supports a load of P = 29 N at midspan. The cross section is rectangular with width b = 25 mm and height h = 60 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

A beam has dimensions of b = 18 in., h = 30 in., and d = 27.5 in. and is reinforced with 4 No. 8 bars. The concrete strength is 9,100 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the strength Mn for this beam.