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Mario acompaña a [q24] abuela al hospital

Mario acompaña a [q24] abuela al hospital

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Determine the transverse reinforcement index, Ktr, for a rec…

Determine the transverse reinforcement index, Ktr, for a rectangular beam with b = 18 in. and d = 24 in., five epoxy-coated No. 6 Grade 60 tension-reinforcement bars placed in the top of the beam, and No. 3 Grade 60 stirrups located every 6 in. along the span. Assume 5,000-psi normal-weight concrete and a clear cover of 1.5 in.

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A 125-mm-long beam supports a load of P = 40 N at midspan. T…

A 125-mm-long beam supports a load of P = 40 N at midspan. The cross section is rectangular with width b = 30 mm and height h = 40 mm. Determine the magnitude of the horizontal shear stress at the centroid of the cross section.

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As axial tensile force is increased, the onset of flexural c…

As axial tensile force is increased, the onset of flexural cracking is delayed.

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At a point subjected to plane stress, the stresses are σx =…

At a point subjected to plane stress, the stresses are σx = –15 ksi, σy = 15 ksi, and τxy = 5 ksi. Determine the angle θp corresponding to the orientation of the principal planes at the point.

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For a beam with stirrup hooks, the free end of the bar must…

For a beam with stirrup hooks, the free end of the bar must extend at least _____ from the hook. Assume b1 = 39 in., b2 = 15 in., d1 = 8 in., d2 = 19 in., and that there are three No. 6 longitudinal tension bars and No. 3 stirrups at 12 in. o.c. The stirrup hooks are 90°.

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ACI 318 provides rules for designing hanger reinforcement.

ACI 318 provides rules for designing hanger reinforcement.

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Larger diameter aggregate creates a rougher crack surface, a…

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

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Assuming Vs exceeds 4sqrt(f’c)bwd, the maximum spacing for v…

Assuming Vs exceeds 4sqrt(f’c)bwd, the maximum spacing for vertical stirrups in the following beam is _____. Let b = 16 in. and d = 35 in. There are four No. 7 longitudinal tension bars and No. 5 stirrups at 12 in. o.c.

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Determine the size modification factor, ψs, for a rectangula…

Determine the size modification factor, ψs, for a rectangular beam with b = 17 in. and d = 24 in., five epoxy-coated No. 9 Grade 60 tension-reinforcement bars placed in the bottom of the beam, and No. 3 Grade 60 stirrups located every 8 in. along the span. Assume 7,000-psi lightweight concrete and a clear cover of 1.75 in.

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