A concrete beam of rectangular cross section 14 in x 24 in is to be reinforced with prestressing tendons having a total cross sectional area of 0.90 in?. The tendons are placed at 3 in from the extreme tension fiber (center to center distance). It has a 25 ft simple span, f:=5,000 psi, f,m=250,000 psi, and the initial prestress is 160,000 psi, fy=0.85fu and 10% losses. What is the total stress in Ibs/in? due to prestressing at the bottom fiber?

A concrete beam of rectangular cross section 14 in x 24 in is to be reinforced with prestressing tendons having a total cross sectional area of 0.90 in?. The tendons are placed at 3 in from the extreme tension fiber (center to center distance). It has a 25 ft simple span, f:=5,000 psi, f,m=250,000 psi, and the initial prestress is 160,000 psi, fy=0.85fu and 10% losses. What is the total stress in Ibs/in? due to prestressing at the bottom fiber?

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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