A precast T beam is to be used as a bridge over a small roadway. Concrete dimensions are be = 48 in., bw = 16 in., hf = 5 in., and h = 25 in. The effective depth d = 20 in. Concrete and steel strengths are 6000 psi and 60,000 psi, respectively. Using approximately one-half the maximum tensile reinforcement permitted by the ACI Code (rmax = 0.0273), determine the design moment capacity of the girder. If the beam is used on a 30 ft simple span, and if in addition to its own weight it must support railings, curbs, and suspended loads totaling 0.475 kip/ft, what uniform service live load limit should be posted?
A precast T beam is to be used as a bridge over a small roadway. Concrete dimensions are be = 48 in., bw = 16 in., hf = 5 in., and h = 25 in. The effective depth d = 20 in. Concrete and steel strengths are 6000 psi and 60,000 psi, respectively. Using approximately one-half the maximum tensile reinforcement permitted by the ACI Code (rmax = 0.0273), determine the design moment capacity of the girder. If the beam is used on a 30 ft simple span, and if in addition to its own weight it must support railings, curbs, and suspended loads totaling 0.475 kip/ft, what uniform service live load limit should be posted?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A precast T beam is to be used as a bridge over a small roadway. Concrete dimensions are be = 48 in., bw
= 16 in., hf = 5 in., and h = 25 in. The effective depth d = 20 in. Concrete and steel strengths are 6000 psi
and 60,000 psi, respectively. Using approximately one-half the maximum tensile reinforcement permitted
by the ACI Code (rmax = 0.0273), determine the design moment capacity of the girder. If the beam is used
on a 30 ft simple span, and if in addition to its own weight it must support railings, curbs, and suspended
loads totaling 0.475 kip/ft, what uniform service live load limit should be posted?
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