ACI 318 does not provide rules for designing hanger reinforcement.

Paso 2 (3 pts) (1 pt per item: Correct words with omitted or misplaced written accents will receive 0.75 pts) What other activities can Alicia enroll in this semester? Fill in the blank with the appropriate activity below. Complete each sentence to describe the picture with the appropriate expressions using an infinitive form of a verb or a noun in each sentence. Note: An infinitive form of a verb is a word that ends in -ar, -er, -ir, for example, “estudiar”. A noun is a word that names a person, place, or thing. For example, “(el) fúbol”. 

In designing for shear, one must ensure that the shear strength equals or exceeds the flexural strength at all points in the beam.

Shear failures in concrete tend to _______.

Flexure-failure loads are more variable than shear-failure loads.

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

There are ACI Code requirements placed on structural integrity of cast-in-place reinforced concrete construction, precast construction, and prestressed concrete slabs.

As the size of coarse aggregate increases, the roughness of the crack decreases. This allows higher shear stresses to be transferred across the crack.

A rectangular beam with cross section b = 16 in., h = 22 in., and d = 19.5 in. supports a total factored uniform load of 1.60 kips/ft, including its own dead load. The beam is simply supported with a 18-ft span. It is reinforced with five No. 5 Grade 60 bars, three of which are cutoff between midspan and the support and two of which extend 10 in. past the centers of the supports. The concrete strength is 4,200 psi (normal weight). The beam has Grade 60 No. 3 stirrups satisfying ACI 318-14 Sections 9.7.6.2.2 and 9.6.3.3. The strength of the five bars is φMn = 130.3 kip-ft, and the strength of the remaining two bars is φMn = 53.5 kip-ft. Determine the distance from the support to the theoretical cutoff point (i.e. disregard ACI 318-14 Section 9.7.3.3).

Compute φVn for the cross section shown. Assume f’c = 4,000 psi, fyt = 60,000 psi, b1 = 28 in., b2 = 14 in., d1 = 4 in., d2 = 15 in., and that there are three No. 9 longitudinal tension bars and No. 4 stirrups at 10 in. o.c.