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Prestressed Concrete Structures
Tricky Prestressed Concrete Structures
Quiz 1
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Q.1
The code used for determining the ultimate flexural strength of the rectangular section?
a) IS: 1444
b) IS: 1440
c) IS: 1343
d) IS: 1543
Q.2
If the neutral axis of the section lies within the flange, the moment of resistance of the section is given by the equation.
a) Mu = fp ap (d-0.42Xu)
b) Mu = fp ap (d+0.42Xu)
c) Mu = fp ap (0.42Xu)
d) Mu = fp ap (0.52Xu)
Q.3
In pre tension & post tension members, the value of tensile stress fp and depth of neutral axis Xu is obtained based on __________
a) Shear reinforcement
b) Effective reinforcement
c) Edge reinforcement
d) Span reinforcement
Q.4
If the neutral axis of the section lies outside the flange then the ultimate moment of resistance of flanged section is?
a) Mu = fp Apw (d-0.4 xu)+0.45fck (b-bw) Df (d-0.5Df)
b) Mu = fp Apw (d-0.4 xu)+0.45fck (b-bw)
c) Mu = fp Apw (d-0.4 xu)
d) Mu = fp Apw
Q.5
The number of steps involved in designing a rectangular prestressed concrete beam are __________
a) 8
b) 14
c) 6
d) 1
Q.6
The section modulus z, of designing a rectangular prestressed concrete beam is given as __________
a) Z = ML/FC
b) Z = Me/Fc
c) Z = MC/FC
d) Z = Md/Fc
Q.7
The position of reinforcement of a recta ngular prestressed concrete beam is evaluated from the relations.
a) e = 2Md-Mc/2F
b) e = 2Md-Me/2F
c) e = 2Md+Mc/2F
d) e = 2Md+Me/2F
Q.8
The number of steps are involved in designing a prestressed concrete beam of I section is?
a) 14
b) 10
c) 12
d) 8
Q.9
The overall depth in a beam of I section is given as?
a) d = k(me)1/2
b) d = k(mt)1/2
c) d = k(ml)1/2
d) d = k(ma)1/2
Q.10
The area of tendons` At` is given as __________
a) At = F/Safe tensile stress in steel
b) At = L/Safe tensile stress in steel
c) At = D/Safe tensile stress in steel
d) At = C/Safe tensile stress in steel
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