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Reinforced Cement Concrete
Slip Loss and Relaxation of Steel
The loss due ...
Question
The loss due to relaxation of stress in steel in PSC member depends on
A
1 and 2 only
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B
2 and 3 only
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C
1,2 and 3
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D
1 and 3 only
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Solution
The correct option is
C
1,2 and 3
c
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Similar questions
Q.
the magnitude of loss of prestress due to relaxation of steel is in the range of
Q.
An ordinary mild steel bar has been prestressed to a working stress of 200 MPa. Young's modulus of steel is 200 GPa. Permanent negative strain due to shrinkage and creep is 0.0008. How much is the effective stress left in steel?
Q.
Two steel rods and a copper rod of equal length
l
0
and equal cross-sectional area are joined rigidly as shown in figure. All the rods are in a state of zero tension at
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Two similar bars of Steel and Aluminium are heated to a same temperature. Forces are applied at the ends of the bars to maintain their lengths unaltered. If the ratio of Young's modulii of Steel and Aluminium is 3, and the ratio of the coefficients of thermal expansion of Steel to that of Aluminium is 0.5, what is the stress on the Aluminium bar if the stress on the Steel bar is 100 MPa?
Q.
A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed by pre-tensioning to a force of 150 kN at an eccentricity of 20 mm. The cross-sectional area of the pre-stressing steel is 187.5mm
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