A simply supported post-tension beam as shown in Figure (1), span length is 14m, carries a uniformly distributed service live load of 10 kN/m. Find the value and location of initial pre-stress force (Pi), so that the mid span stresses in concrete at top fiber is zero at initial stage and zero stress at bottom fiber in service stage. Total losses in pre-stressed force are 15%. 100 200 100 750 100 400 Typical Cross section. Figure (1)
A simply supported post-tension beam as shown in Figure (1), span length is 14m, carries a uniformly distributed service live load of 10 kN/m. Find the value and location of initial pre-stress force (Pi), so that the mid span stresses in concrete at top fiber is zero at initial stage and zero stress at bottom fiber in service stage. Total losses in pre-stressed force are 15%. 100 200 100 750 100 400 Typical Cross section. Figure (1)
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter20: Design Of Rigid Pavements
Section: Chapter Questions
Problem 12P
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Question
![A simply supported post-tension beam as shown
in Figure (1), span length is 14m, carries a uniformly
distributed service live load of 10 kN/m. Find the
value and location of initial pre-stress force (Pi), so
that the mid span stresses in concrete at top fiber is
zero at initial stage and zero stress at bottom fiber in
service stage. Total losses in pre-stressed force are
15%.
100
200
100
750
100
400
Typical Cross section.
Figure (1)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F84eea4e5-9515-41c6-9013-e8ae9e034479%2Fc67a8df6-ae22-4499-a215-611c91633c41%2F24plnww_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A simply supported post-tension beam as shown
in Figure (1), span length is 14m, carries a uniformly
distributed service live load of 10 kN/m. Find the
value and location of initial pre-stress force (Pi), so
that the mid span stresses in concrete at top fiber is
zero at initial stage and zero stress at bottom fiber in
service stage. Total losses in pre-stressed force are
15%.
100
200
100
750
100
400
Typical Cross section.
Figure (1)
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