1. Discuss the concept of prestressed concrete, the two different prestressing types and methods. Add illustration for a better presentation.

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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SUBJECT: PRESTRESSED CONCRETE

NOTE: DO NOT ROUND OFF IF IT IS NOT THE FINAL ANSWER, THE FINAL ANSWER MUST BE 3 DECIMALS

SHOW  DETAILED SOLUTION ESPECIALLY FOR NUMBER 2

 

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1. Discuss the concept of prestressed concrete, the two different prestressing types and
methods. Add illustration for a better presentation.
2. For the prestressed concrete beam shown below, the beam is reinforced with prestressing
steel. The material properties and prestressing are as follow:
fc' = 40 MPa
fci' = 35 MPa
fpu = 1860 MPa
fpi = 1120 MPa
Aps = 8 x 100mm²
fpe = 1720 MPa
Allowable stresses at final stage:
ftop = 0.45fc'
fbottom=0.50 √fc'
Determine the following:
a. deadlod (self-weight) of the beam, kN/m
b. liveload the beam could carry for allowable stress in compression, kN/m
c. liveload the beam could carry for allowable stress in tension, kN/m
Transcribed Image Text:1. Discuss the concept of prestressed concrete, the two different prestressing types and methods. Add illustration for a better presentation. 2. For the prestressed concrete beam shown below, the beam is reinforced with prestressing steel. The material properties and prestressing are as follow: fc' = 40 MPa fci' = 35 MPa fpu = 1860 MPa fpi = 1120 MPa Aps = 8 x 100mm² fpe = 1720 MPa Allowable stresses at final stage: ftop = 0.45fc' fbottom=0.50 √fc' Determine the following: a. deadlod (self-weight) of the beam, kN/m b. liveload the beam could carry for allowable stress in compression, kN/m c. liveload the beam could carry for allowable stress in tension, kN/m
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