A rectangular concrete beam of cross section 120mm wide and 300mm deep – McqOptions

MCQOPTIONS

1.	A rectangular concrete beam of cross section 120mm wide and 300mm deep is prestressed by a straight cable, effective force of 180kn at an eccentricity 50, area of 36‚Äö√†√∂‚àö‚â•103mm2(z=18‚Äö√†√∂‚àö‚â•105mm3). Find the total stress due to prestress?$
A.	10
B.	25
C.	35
D.	45
Answer» B. 25

Discussion

No Comment Found

Related MCQs

The formulae for load factor against cracking is ____________
The widths of the cracks are influenced by ____________
The cracks appear when the tensile stresses at the soffit are equal to ____________
When the tensile stresses are developed in the cracks, they are visible at ____________
A rectangular concrete beam of cross section 100mm wide and 400mm deep is prestressed by a straight cable of span 6m, imposed load is 3.14kn/m, area is 36×103mm2(Z=18×105mm3). Calculate working moment assuming the self weight of concrete as 24kn/m3?
A rectangular concrete beam of cross section 120mm wide and 300mm deep is prestressed by a straight cable, effective force of 180kn at an eccentricity 50, area of 36×103mm2(z=18×105mm3). Find the total stress due to prestress?
When the loads in a concrete member are further increased than permitted, the crack widths are of an order of limit?
The micro cracks develop as soon as the tensile strain in concrete exceeds about ____________
The compressive and tensile stresses developed in cracking moments are due to ____________
The soffit of the beam after the transfer of prestress to concrete will be under ____________