If φVc = 66 kip and Vu = 26 kip, are stirrups required?

A 115-mm-long beam supports a load of P = 30 N at midspan. The cross section is rectangular with width b = 26 mm and height h = 55 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

If φVc = 58 kip and Vu = 21 kip, are stirrups required?

A beam has dimensions of b = 18 in., h = 12 in., and d = 9.5 in. and is reinforced with 4 No. 11 bars. The concrete strength is 5,000 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.118 in., does the reinforcement yield?

If a beam is supported by a girder of essentially the same depth, the compression fans that form in the supporting girder tend to tie the beam and girder together.

If φVc = 39 kip and Vu = 16 kip, are stirrups required?

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 29 in., b2 = 12 in., d1 = 6 in., d2 = 13 in., and that there are three No. 8 longitudinal tension bars and No. 4 stirrups at 8 in. o.c. The stirrup hooks are 90°.

A 115-mm-long beam supports a load of P = 34 N at midspan. The cross section is rectangular with width b = 26 mm and height h = 55 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

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.