Determine the value of the stress in the prestressed reinforcement at nominal strength. (MPa)
Determine the value of the stress in the prestressed reinforcement at nominal strength. (MPa)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
![The prestressed I beam shown in cross section is pre tensioned using seven ordinary strands grade
250 (fpu = 1728 MPa) carrying an effective prestress fpe = 988 MPa, fpy =1480 MPa.
%3D
300
0.85fc'
150 a
300
440
600
(d-a2)
300
T=Aps fps
Aps =650 mm2
Total depth of beam = 600 mm
Distance from center to tendons to the top of the beam = 440 mm
Aps = 650 mm²
%3D
Average flange thickness = 150 mm
Width of flange = 300 mm
%3D
Thickness of web = 100 mm
%3D
fc' = 27.6 MPa
Determine the value of the stress in the prestressed reinforcement at nominal strength. (MPa)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3d890410-931d-464e-bff7-c8e6c0194019%2F70a4958f-f5ff-4679-8eaf-0a72d5f2fe5f%2Fd5wyift_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The prestressed I beam shown in cross section is pre tensioned using seven ordinary strands grade
250 (fpu = 1728 MPa) carrying an effective prestress fpe = 988 MPa, fpy =1480 MPa.
%3D
300
0.85fc'
150 a
300
440
600
(d-a2)
300
T=Aps fps
Aps =650 mm2
Total depth of beam = 600 mm
Distance from center to tendons to the top of the beam = 440 mm
Aps = 650 mm²
%3D
Average flange thickness = 150 mm
Width of flange = 300 mm
%3D
Thickness of web = 100 mm
%3D
fc' = 27.6 MPa
Determine the value of the stress in the prestressed reinforcement at nominal strength. (MPa)
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