A prestressed beam is given in the figure below. Aps = 861 mm² H = 560 mm B = 350 mm y = 110 mm If the initial prestress is fps,i = 1,208 MPa, calculate the stress at the bottom fiber, at midspan section due to prestress only. Input the answer in MPa, wtih 2 decimal places including the sign. + for tension, - for compression. Aps mm B (mm) II (mm) y (mm) L (m)

Structural Analysis
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Chapter2: Loads On Structures
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Question 8
A prestressed beam is given in the figure below.
Aps = 861 mm2
H= 560 mm
B = 350 mm
y = 110 mm
If the initial prestress is fps,i = 1,208 MPa, calculate the stress at the bottom fiber, at midspan section due to prestress only. Input the answer in MPa, wtih 2 decimal places including the sign. + for tension, - for compression.
Aps mm"
B (mm) -
II (mm)
y (mm)
L (m)
Transcribed Image Text:Question 8 A prestressed beam is given in the figure below. Aps = 861 mm2 H= 560 mm B = 350 mm y = 110 mm If the initial prestress is fps,i = 1,208 MPa, calculate the stress at the bottom fiber, at midspan section due to prestress only. Input the answer in MPa, wtih 2 decimal places including the sign. + for tension, - for compression. Aps mm" B (mm) - II (mm) y (mm) L (m)
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