A prestressed concrete beam, 200mm wide and 300mm deep is prestressed – McqOptions

MCQOPTIONS

1.	A prestressed concrete beam, 200mm wide and 300mm deep is prestressed with wires (area is 320mm2) located at a constant eccentricity of 50mm, initial stress of 1000n/mm2, span is 10m. Calculate loss of stress due to friction and slip anchorage of post tensioned beam?(Es = 210kn/mm2, Ec = 35kn/mm2).
A.	21 and 15
B.	35 and 25
C.	15 and 20
D.	5 and 10
Answer» B. 35 and 25

Discussion

No Comment Found

Related MCQs

A prestressed concrete beam, 200mm wide and 300mm deep is prestressed with wires (area is 320mm2) located at a constant eccentricity of 50mm, initial stress of 1000n/mm2, span is 10m. Calculate loss of stress due to friction and slip anchorage of post tensioned beam?(Es = 210kn/mm2, Ec = 35kn/mm2).
The total losses of stress that could be encountered under normal conditions of work were recommended by __________
A post tensioned cable of beam 10m long is initially tensioned to a stress of 1000n/mm2 at one end, slope is 1 in 24 tendons curved at each end , area is 600mm2, Es is 210kn/mm2, coefficient of friction between duct and cable is 0.55, friction coefficient for wave effect is 0.0015perm. During anchorage, if there is a slip 3mm at the jacking end, calculate final force?
A concrete beam is post tensioned by a cable carrying an initial stress of 1000n/mm2, the slip at the jacking end was end was observed to be 5mm; modulus of elasticity of steel is 210kn/mm2. Estimate the percentage loss of stress due to anchorage if length of beam is 30m?
The loss of stress due to anchorage slip of anchorages is given as __________
In case of long line pre tensioning system, anchorage slip is less than __________
The anchorage slip is low in members with __________
The amount of anchorage slip generally depends upon __________
The anchorage slip is observed in __________
The term anchorage slip means ___________