For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 25 in., b2 = 15 in., d1 = 4 in., d2 = 25 in., and that there are three No. 8 longitudinal tension bars and No. 5 stirrups at 12 in. o.c. The stirrup hooks are 90°.

A simply-supported beam has a 1 kip/ft uniformly-distributed load over the left half of its 11-ft span. What is the magnitude of the maximum shear force in the beam?

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”. 

A concrete floor system with a ratio of the longer to the shorter span length that is greater than or equal to 2 is usually considered a one-way system.

A classmate has suggested a beam design that has dimensions of b = 16 in., h = 22 in., and d = 19.5 in. and is reinforced with 4 No. 7 bars. Assuming a cover of 1.5 in. and a stirrup diameter of 0.5 in., does the reinforcement fit within a single row as suggested?

If φVc = 24 kip and Vu = 33 kip, are stirrups required?

If φVc = 24 kip and Vu = 33 kip, are stirrups required?

Stirrups are unable to resist shear unless they are crossed by an inclined crack.

Stirrups are unable to resist shear unless they are crossed by an inclined crack.

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