The strength-reduction factor, φ, for shear and torsion is _____.
Blog
A simply-supported beam has a 3 kip/ft uniformly-distributed…
A simply-supported beam has a 3 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?
If φVc = 50 kip and Vu = 58 kip, are stirrups required?
If φVc = 50 kip and Vu = 58 kip, are stirrups required?
The symbol λ in the 1994 version of the modified compression…
The symbol λ in the 1994 version of the modified compression field theory, , is _______.
A simply-supported beam has a 3 kip/ft uniformly-distributed…
A simply-supported beam has a 3 kip/ft uniformly-distributed load over the entire 8-ft span. What is the magnitude of the maximum shear force in the beam?
Adhesion and friction between the concrete and reinforcement…
Adhesion and friction between the concrete and reinforcement are quickly lost when the bar is loaded in tension, because the diameter of the bar _______ due to Poisson’s ratio.
Which of the following best describes a smeared-crack model?
Which of the following best describes a smeared-crack model?
Shear stresses will exist in those parts of a beam where the…
Shear stresses will exist in those parts of a beam where the moment changes from section to section.
A continuous beam’s flexural reinforcement must extend at le…
A continuous beam’s flexural reinforcement must extend at least _____ from the point where it is no longer needed to resist tension. Assume f’c = 4,000 psi, fyt = 40,000 psi, b1 = 32 in., b2 = 14 in., d1 = 6 in., d2 = 15 in., and that there are three No. 9 longitudinal tension bars and No. 3 stirrups at 6 in. o.c. The stirrup hooks are 90°.
When a beam is supported by a girder or other beam of essent…
When a beam is supported by a girder or other beam of essentially the same depth, hanger reinforcement should be provided in the joint.