A concrete beam of rectangular cross section 14 in x 24 in is to be reinforced with bonded 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, fpu=250,000 psi, and the initial prestress is 160,000 psi, f,y=0.85fu and 10% losses. What is the stress in Ib-ft due to the weight of the beam at the bottom fiber? Assume unit weight of concrete = 150 lb/ft3.

A concrete beam of rectangular cross section 14 in x 24 in is to be reinforced with bonded 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, fpu=250,000 psi, and the initial prestress is 160,000 psi, f,y=0.85fu and 10% losses. What is the stress in Ib-ft due to the weight of the beam at the bottom fiber? Assume unit weight of concrete = 150 lb/ft3.

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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