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A prestressed concrete beam 410mm x 572mm has the following service loadings PDL-55 KN PLL-84 KN *Concentrated load acts on the midspan WDL=12 kN wDL=11 kN. Loss of prestress at service loads is 18 % Throughout the span, the tendons are located 69 mm below the N.A.. If the allowable compressive stress is 15.75 MPa and the allowable tensile stress is 2.96 MPa, and considering the point of maximum moment, calculate the required Prestressing force in kN. PDL, PLL. WDL, WLL 16m A T B

A prestressed concrete beam 410mm x 572mm has the following service loadings PDL-55 KN PLL-84 KN *Concentrated load acts on the midspan WDL=12 kN wDL=11 kN. Loss of prestress at service loads is 18 % Throughout the span, the tendons are located 69 mm below the N.A.. If the allowable compressive stress is 15.75 MPa and the allowable tensile stress is 2.96 MPa, and considering the point of maximum moment, calculate the required Prestressing force in kN. PDL, PLL. WDL, WLL 16m A T B

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 prestressed concrete beam 410mm x 572mm has the following service loadings PDL-55 kN PLL-84 KN *Concentrated load acts on the midspan wDL=12 kN wDL=11 kN. Loss of prestress at service loads is 18 % Throughout the span, the tendons are located 69 mm below the N.A.. If the allowable compressive stress is 15.75 MPa and the allowable tensile stress is 2.96 MPa, and considering the point of maximum moment, calculate the required Prestressing force in kN. PDL, PLL. WDL, WLL 16m A B
Transcribed Image Text:A prestressed concrete beam 410mm x 572mm has the following service loadings PDL-55 kN PLL-84 KN *Concentrated load acts on the midspan wDL=12 kN wDL=11 kN. Loss of prestress at service loads is 18 % Throughout the span, the tendons are located 69 mm below the N.A.. If the allowable compressive stress is 15.75 MPa and the allowable tensile stress is 2.96 MPa, and considering the point of maximum moment, calculate the required Prestressing force in kN. PDL, PLL. WDL, WLL 16m A B
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