You are considering a beam design that has dimensions of b = 16 in., h = 26 in., and d = 23.5 in. The beam is singly reinforced with all of the reinforcement in a single row. The concrete strength is 3,400 psi, and the yield strength of the reinforcement is 60,000 psi. What cross-sectional area of reinforcement is needed to achieve a strain in the reinforcement of 0.0075?

Doubly reinforced concrete beams have reinforcement in both the tension and compression zones.

The participation of children with disabilities in sports promotes:

One of the four primary reasons for using compression reinforcement in beams is decreased cost.

(04.02 LC)Which of the following events is most likely to result in conditions suitable for primary succession?

The most common perpetrators of child maltreatment are:

(05.02 MC)A scientist has kept records of the color variations in a field of phlox for several generations. Phlox is an annual plant that produces flowers in a variety of shades ranging from white to red. Initially the field contained equal proportions of white, pink, and red flowers. By the end of the study the proportions of flowers in the field were 80% red, 15% pink, and 5% white. Which of the following inferences best explains the change in flower color proportions?

At what age would you be most worried if a child is not walking?

A beam has dimensions of b = 14 in., h = 24 in., and d = 21.5 in. and is reinforced with 5 No. 7 bars. The concrete strength is 5,500 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the nominal moment capacity, Mn, of the beam.

A beam has dimensions of b = 16 in., h = 28 in., and d = 25.5 in. and is reinforced with 5 No. 8 bars. The concrete strength is 4,900 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the tensile force T in the reinforcement.