The beam shown is prestressed using a bonded

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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2. The beam shown is prestressed using a bonded
(stress relieved tendons) with a specified tensile
strength of prestressing tendons fpu = 1350 MPa,
and fc' = 35 MPa. The area of prestressed
reinforcement in tension zone Aps = 1000 mm2.
The specified yield strength of prestressing
tendons fpy =1160 MPa.
%3D
%3D
ру
0.85fc'
a
430
N.A.
|(d-a/2)
A=1000
T=Apsfps
250
a. Determine the value of the stress in prestressed
reinforcement at nominal strength.
b. Determine the value of the depth of the
compression block.
c. Which of the following gives the ultimate
moment capacity of the prestressed beam.
Transcribed Image Text:2. The beam shown is prestressed using a bonded (stress relieved tendons) with a specified tensile strength of prestressing tendons fpu = 1350 MPa, and fc' = 35 MPa. The area of prestressed reinforcement in tension zone Aps = 1000 mm2. The specified yield strength of prestressing tendons fpy =1160 MPa. %3D %3D ру 0.85fc' a 430 N.A. |(d-a/2) A=1000 T=Apsfps 250 a. Determine the value of the stress in prestressed reinforcement at nominal strength. b. Determine the value of the depth of the compression block. c. Which of the following gives the ultimate moment capacity of the prestressed beam.
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