A continuous beam’s flexural reinforcement must extend at least _____ from the point where it is no longer needed to resist tension. Assume f’c = 4,000 psi, fyt = 40,000 psi, b1 = 20 in., b2 = 13 in., d = 21 in., h1 = 4 in., h2 = 12 in., h3 = 10 in., and t = 8 in. There are four No. 6 longitudinal tension bars and No. 3 stirrups at 8 in. o.c.

The height of available chairs may control the chosen slab thickness.

A 123-mm-long beam supports a load of P = 30 N at midspan. The cross section is rectangular with width b = 27 mm and height h = 60 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

Compute φVn for the cross section shown. Assume f’c = 5,000 psi, fyt = 40,000 psi, d = 28 in., w = 22.5 in., t = 4 in., and that there are four No. 7 longitudinal tension bars and No. 3 stirrups at 10 in. o.c.

Mis hermanos van a al fútbol americano.

Is it more important to put transverse reinforcement at the ends of a splice or in the middle?

Shear stresses will exist in those parts of a beam where the moment changes from section to section.

Assuming Vs does not exceed 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b1 = 23 in., b2 = 11 in., d1 = 6 in., and d2 = 53 in. There are three No. 6 longitudinal tension bars and No. 4 stirrups at 10 in. o.c.

Compute φVn for the cross section shown. Assume f’c = 3,500 psi, fyt = 60,000 psi, d = 30 in., w = 20.5 in., t = 6 in., and that there are four No. 6 longitudinal tension bars and No. 5 stirrups at 9 in. o.c.

When a beam is supported by a girder or other beam of essentially the same depth, hanger reinforcement should be provided in the joint.