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Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
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![The prestress T-beam section has a simple span
of 6 m. The tendons is subjected to initial stress of
900 MPa with an area of 800 mm. Assuming a
loss of stress of 18%. no tension will be acting at
the bottom and maximum stress of 9.5 MPa at the
top should not exceed.
a) Determine the stress at the bottom due to the
final prestressing force alone.
b) Determine the safe moment that the beam
could carry based on the allowable stresses. (kN-
m)
c) Determine the sate uniform live load that the
beam could carry if the unit weight of concrete 24
kN/m°. (N/m)
d) Determine the stress at the top due to the final
prestressing force alone. (MPa)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd6195684-d723-4468-86c6-762de30a2c6c%2Fededab06-4c7c-489d-b296-c0b242012525%2Fzhdcmpf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The prestress T-beam section has a simple span
of 6 m. The tendons is subjected to initial stress of
900 MPa with an area of 800 mm. Assuming a
loss of stress of 18%. no tension will be acting at
the bottom and maximum stress of 9.5 MPa at the
top should not exceed.
a) Determine the stress at the bottom due to the
final prestressing force alone.
b) Determine the safe moment that the beam
could carry based on the allowable stresses. (kN-
m)
c) Determine the sate uniform live load that the
beam could carry if the unit weight of concrete 24
kN/m°. (N/m)
d) Determine the stress at the top due to the final
prestressing force alone. (MPa)
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