A beam has dimensions of b = 14 in., h = 26 in., d’ = 2.5 in., and d = 23.5 in. It is reinforced with 2 No. 5 bars on the compression side and 4 No. 8 bars on the tension side. The concrete strength is 4,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 4.199 in., determine the force in the compression reinforcement, Cs.

Which of the following layers are found in capillaries?

A beam has dimensions of b = 14 in., h = 30 in., d’ = 2.5 in., and d = 27.5 in. It is reinforced with 2 No. 5 bars on the compression side and 5 No. 8 bars on the tension side. The concrete strength is 3,400 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.026 in., determine the strain in the compression reinforcement, ε’s.

A unicorn company is a privately-held startup valued at $1 million. 

According to the Global Initiative for COPD Guidelines, which of the following medications is indicated for use in all COPD stages?

A 58-year-old male presents for c/o of a productive cough for the third time in 9 months. He has a 42-pack-year history but is currently smoking 8 cigarettes/day due to the cough. With his smoking history you are concerned about the possibility of COPD. Which of the following criteria is included in the GOLD (Global Initiative for Chronic Obstructive Lung disease) classification for the diagnosis of COPD?

Smaller diameter aggregate creates a rougher crack surface, allowing higher shear stresses to be transferred across cracks.

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.

According to ACI 318, the strength-reduction factor, φ, for shear and torsion is _____.

A 58-year-old male presents for c/o of a productive cough for the third time in 9 months. He has a 42-pack-year history but is currently smoking 8 cigarettes/day due to the cough. With his smoking history you are concerned about the possibility of COPD. Which of the following criteria is included in the GOLD (Global Initiative for Chronic Obstructive Lung disease) classification for the diagnosis of COPD?