A prestressed concrete beam 223mm x 677mm has the following service loadings PDL=67 KN PLL=44 KN *Concentrated load acts on the midspan wDL=12 kN WDL=17 kN. Loss of prestress at service loads is 20 % Throughout the span, the tendons are located 83 mm below the N.A.. If the allowable tensile stress is 2.96 MPa, and considering the point of maximum moment, calculate the required Prestressing force in kN.

A prestressed concrete beam 223mm x 677mm has the following service loadings PDL=67 KN PLL=44 KN *Concentrated load acts on the midspan wDL=12 kN WDL=17 kN. Loss of prestress at service loads is 20 % Throughout the span, the tendons are located 83 mm below the N.A.. If the allowable tensile stress is 2.96 MPa, and considering the point of maximum moment, calculate the required Prestressing force in kN.

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter9: Composite Construction

Section: Chapter Questions

Problem 9.1.2P

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