Paso 2 (3 pts) Alicia and Luis are still talking about their sport and activities preferences. Complete each sentence with the most appropriate verb in the infinitive. Note: An infinitive form of a verb is a word that ends in -ar, -er, -ir, for example, “estudiar”. 

At a point subjected to plane stress, the stresses are σx = 50 MPa, σy = –90 MPa, and τxy = 70 MPa. Determine the angle θp corresponding to the orientation of the principal planes at the point.

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 8 No. 8 bars at a depth of 24 in. The top row contains 6 No. 7 bars at a depth of 18.5 in. Determine the effective (centroidal) depth, d, of the steel.

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

A beam has dimensions of b = 20 in., h = 10 in., and d = 7.5 in. and is reinforced with 4 No. 9 bars. The concrete strength is 4,700 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 3.686 in., does the reinforcement yield?

A 115-mm-long beam supports a load of P = 29 N at midspan. The cross section is rectangular with width b = 25 mm and height h = 60 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

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 4 No. 8 bars on the tension side. The concrete strength is 2,800 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 5.68 in., determine the strain in the compression reinforcement, ε’s.

Which of the following is not a purpose of concrete cover?

The shear failure of a slender beam without stirrups is _______.

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