2nd: A simply supported 14-m span beam, 300-mm wide by 540-mm deep, is pre- stressed by straight tendons with Aps = 774 mm² located 70 mm from the bottom at an initial prestress of 1.10 GPa. Calculate the concrete stress in MPa at the bottom fiber of the beam at midspan immediately after the tendons are cut. Write your answer in 2 decimal places only. Use unit weight of concrete 24 kN/cu.m. Sign convention is (+)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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2nd: A simply supported 14-m span beam,
300-mm wide by 540-mm deep, is pre-
stressed by straight tendons with Aps = 774
mm² located 70 mm from the bottom at an
initial prestress of 1.10 GPa. Calculate the
concrete stress in MPa at the bottom fiber of
the beam at midspan immediately after the
tendons are cut. Write your answer in 2
decimal places only. Use unit weight of
concrete 24 kN/cu.m. Sign convention is (+)
tension, (-) compression. Indicate the sign in
your final answer.
Transcribed Image Text:2nd: A simply supported 14-m span beam, 300-mm wide by 540-mm deep, is pre- stressed by straight tendons with Aps = 774 mm² located 70 mm from the bottom at an initial prestress of 1.10 GPa. Calculate the concrete stress in MPa at the bottom fiber of the beam at midspan immediately after the tendons are cut. Write your answer in 2 decimal places only. Use unit weight of concrete 24 kN/cu.m. Sign convention is (+) tension, (-) compression. Indicate the sign in your final answer.
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