Given: Consider the floor frame below supports a 6-in. concrete floor. Assume the beams and girders have full lateral support of the compression flange throughout the entire length. The floor live load is 120psf and assume concrete density is 150 pct Column -I Beam Girder I 1 3 @15ft = 45ft Find: The lightest W-shape beam and girder. LRFD and ASD ➜ 38 ft Note: Floor continues on all sides

Given: Consider the floor frame below supports a 6-in. concrete floor. Assume the beams and girders have full lateral support of the compression flange throughout the entire length. The floor live load is 120psf and assume concrete density is 150 pct Column -I Beam Girder I 1 3 @15ft = 45ft Find: The lightest W-shape beam and girder. LRFD and ASD ➜ 38 ft Note: Floor continues on all sides

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Q7/ A precast beam is to be used as a bridge over a small roadway. Concrete dimensions are b= 500 mm, and h = 700 mm. The effective depth d = 600 mm. Concrete and steel strengths are 42 MPa and 420 MPa, respectively. Using approximately one-half the maximum tensile reinforcement permitted by the ACI Code (select the actual size of bar and number to be used), determine the design moment capacity of the girder. If the beam is used on a 9 m simple span, and if in addition to its own weight it must support railings, curbs, and suspended loads totaling 7 kN/m, what uniform service live load limit should be posted?
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The beam shown below is subjected to a uniform live load, ωL = 1k/ft. In addition, the beam must resist a superimposed dead load, ωD.S = 0.8k/ft as well as its self-weight. The concrete strength is 6,000 psi and the steel is Grade 60. The beam is not in contact with the ground or exposed to weather (hint: cover). Calculate the nominal and design shear strengths of the beam section. Is the beam shear design adequate? If so, redesign the beam to make the design more economical. If not, redesign the beam for shear to ensure the design is adequate per ACI 318-19 standards. . The beam shown below is subjected to a uniform live load, ωL = 1k/ft. In addition, the beam must resist a superimposed dead load, ωD.S = 0.8k/ft as well as its self-weight. The concrete strength is 6,000 psi and the steel is Grade 60. The beam is not in contact with the ground or exposed to weather (hint: cover). Calculate the nominal and design shear strengths of the beam section. Is the beam shear designadequate? If…
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