Because a slab is thinner than the beams supporting it, the concrete in the slab shrinks more rapidly than the concrete in the beams.

At a point subjected to plane stress, the stresses are σx = 20 ksi, σy = 10 ksi, and τxy = –10 ksi. Determine the angle θp corresponding to the orientation of the principal planes at the point.

ACI 318 does not provide rules for designing hanger reinforcement.

A 123-mm-long beam supports a load of P = 40 N at midspan. The cross section is rectangular with width b = 29 mm and height h = 60 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

Todos celebramos la victoria después de [q17] el partido a Ohio State 46-10.

Shrinkage cracks perpendicular to the span of the one-way design strips will be crossed by flexural reinforcement, which will limit the width of the cracks.

A concrete floor system with a ratio of the longer to the shorter span length that is less than 2 is usually considered a two-way system.

Assuming Vs does not exceed 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let d = 49 in., w = 41.5 in., and t = 5 in. There are five No. 9 longitudinal tension bars and No. 4 stirrups at 8 in. o.c.

Compute φVn for the cross section shown. Assume f’c = 5,000 psi, fyt = 60,000 psi, b1 = 31 in., b2 = 13 in., d1 = 8 in., d2 = 15 in., and that there are three No. 6 longitudinal tension bars and No. 5 stirrups at 9 in. o.c.

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 9 No. 7 bars at a depth of 24 in. The top row contains 5 No. 8 bars at a depth of 20 in. Determine the effective (centroidal) depth, d, of the steel.