The overall health of the economy has a significant impact on consumers’ ability and willingness to purchase goods and services. The most reliable measure of the economy’s health is the sum of all final goods and services produced in the country in a given period. This measure is called ____________.

In the binding pocket of your target, you can identify several amino acids involved in catalysis  (in this case proteolysis) a serine, histidine, and aspartate. Which amino acid is likely to be the nucleophile involved in covalent catalysis?   

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b = 13 in., d = 22 in., and that there are four No. 6 longitudinal tension bars and No. 3 stirrups at 7 in. o.c. The stirrup hooks are 135°.

A simply-supported beam has a 1 kip/ft uniformly-distributed load over the entire 12-ft span. What is the magnitude of the maximum shear force in the beam?

Assuming Vs exceeds 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b1 = 20 in., b2 = 10 in., d1 = 6 in., and d2 = 17 in. There are three No. 8 longitudinal tension bars and No. 4 stirrups at 6 in. o.c.

Compute φVn for the cross section shown. Assume f’c = 3,500 psi, fyt = 40,000 psi, b1 = 26 in., b2 = 12 in., d1 = 6 in., d2 = 16 in., and that there are three No. 9 longitudinal tension bars and No. 5 stirrups at 8 in. o.c.

Compute φVn for the cross section shown. Assume f’c = 4,500 psi, fyt = 40,000 psi, d = 30 in., w = 24.5 in., t = 4 in., and that there are four No. 7 longitudinal tension bars and No. 4 stirrups at 11 in. o.c.

A simply-supported beam has a 3 kip/ft uniformly-distributed load over the entire 10-ft span. What is the magnitude of the maximum shear force in the beam?

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 30 in., b2 = 16 in., d1 = 6 in., d2 = 27 in., and that there are three No. 7 longitudinal tension bars and No. 4 stirrups at 10 in. o.c. The stirrup hooks are 90°.

A rectangular beam has a cross section of b = 18 in., h = 22 in., and d = 19.5 in. It is reinforced with five No. 7 Grade 60 bars. The concrete strength is 6,400 psi (normal weight). The beam has Grade 60 No. 3 stirrups satisfying ACI 318-14 Sections 9.7.6.2.2 and 9.6.3.3. Determine the strength φMn for this beam.