Advantages of technology include all of the following except:

Companies often reorganize their operations which might include lay-offs, divestiture of business units, or other decisions linked to their ability to maximize profitability.  Which dimension of social responsibility is related to a firm’s desire to maximize profits?

Use ACI 318-14 Table 25.4.2.2 to determine the development length for the straight tension bars (no hooks) in a rectangular beam with b = 18 in. and d = 24 in., five uncoated No. 9 Grade 60 bars placed in the bottom of the beam, and No. 4 Grade 60 stirrups located every 12 in. along the span. Assume 6,000-psi lightweight concrete and a clear cover of 1.75 in.

Use ACI 318-14 Table 25.4.2.2 to determine the development length for the straight tension bars (no hooks) in a rectangular beam with b = 17 in. and d = 20 in., five galvanized No. 9 Grade 60 bars placed in the bottom of the beam, and No. 4 Grade 60 stirrups located every 8 in. along the span. Assume 7,000-psi lightweight concrete and a clear cover of 1.75 in.

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b = 16 in., d = 25 in., and that there are four No. 9 longitudinal tension bars and No. 3 stirrups at 12 in. o.c. The stirrup hooks are 135°.

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 = 28 in., b2 = 15 in., d = 23 in., h1 = 6 in., h2 = 13 in., h3 = 9 in., and t = 6 in. There are four No. 8 longitudinal tension bars and No. 3 stirrups at 9 in. o.c.

Determine the casting-position modification factor, ψt, for a rectangular beam with b = 16 in. and d = 23 in., five epoxy-coated No. 8 Grade 60 tension-reinforcement bars placed in the top of the beam, and No. 3 Grade 60 stirrups located every 8 in. along the span. Assume 7,000-psi normal-weight concrete and a clear cover of 2 in.

Determine the bar-spacing factor, cb, for a simply supported rectangular beam with b = 16 in. and No. 3 stirrups. This beam has five No. 7 bars as longitudinal reinforcement. The clear cover is 1.8 in.

A 115-mm-long beam supports a load of P = 42 N at midspan. The cross section is rectangular with width b = 28 mm and height h = 50 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

Assuming Vs does not exceed 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b1 = 22 in., b2 = 11 in., d = 57 in., h1 = 4 in., h2 = 50 in., h3 = 8 in., and t = 8 in. There are six No. 9 longitudinal tension bars and No. 3 stirrups at 7 in. o.c.