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A series of reinforced concrete beams are cast monolithically to a slab of 150 mm thick with clear spacing of 3.0 m over a 7.5 m simple span. Using bw = 350 mm, h = 550 mm, d = 480 mm, f'c = 21 MPa, fy = 420 MPa, and concrete weighs 23.5 kN/m3. Determine the following using the effective width of the beam: a.) Cracking moment of the section. Use 1 = 1.0 (kN-m) b.) Design moment capacity of the section if reinforced with 4-20mm bars (kN-m) c.) Required tensile reinforcing area if it will carry a factored moment of 2000 kN-m (mm2)

A series of reinforced concrete beams are cast monolithically to a slab of 150 mm thick with clear spacing of 3.0 m over a 7.5 m simple span. Using bw = 350 mm, h = 550 mm, d = 480 mm, f'c = 21 MPa, fy = 420 MPa, and concrete weighs 23.5 kN/m3. Determine the following using the effective width of the beam: a.) Cracking moment of the section. Use 1 = 1.0 (kN-m) b.) Design moment capacity of the section if reinforced with 4-20mm bars (kN-m) c.) Required tensile reinforcing area if it will carry a factored moment of 2000 kN-m (mm2)

Structural Analysis
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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A series of reinforced concrete beams are cast monolithically to a slab of 150 mm thick with clear spacing of 3.0 m over a 7.5 m simple span. Using bw = 350 mm, h = 550 mm, d = 480 mm, f'c = 21 MPa, fy = 420 MPa, and concrete weighs 23.5 kN/m3. Determine the following using the effective width of the beam: a.) Cracking moment of the section. Use 1 = 1.0 (kN-m) b.) Design moment capacity of the section if reinforced with 4-20mm bars (kN-m) c.) Required tensile reinforcing area if it will carry a factored moment of 2000 kN-m (mm2)
Transcribed Image Text:A series of reinforced concrete beams are cast monolithically to a slab of 150 mm thick with clear spacing of 3.0 m over a 7.5 m simple span. Using bw = 350 mm, h = 550 mm, d = 480 mm, f'c = 21 MPa, fy = 420 MPa, and concrete weighs 23.5 kN/m3. Determine the following using the effective width of the beam: a.) Cracking moment of the section. Use 1 = 1.0 (kN-m) b.) Design moment capacity of the section if reinforced with 4-20mm bars (kN-m) c.) Required tensile reinforcing area if it will carry a factored moment of 2000 kN-m (mm2)
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