For M 150 mix concrete, according to I.S. specifications, local bond stress, is

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Question
For M 150 mix concrete, according to I.S. specifications, local bond stress, is
Options
A. 5 kg/cm²
B. 10 kg/cm²
C. 15 kg/cm²
D. 20 kg/cm²
E. 25 kg/cm²

Correct Answer

10 kg/cm²

RCC Structures Design problems

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1. The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon
Options
A. breadth of the rib
B. overall thickness of the rib
C. centre to centre distance between T-beams
D. span of the T-beam
E. all the above.

4. High strength concrete is used in prestressed member
Options
A. to overcome high bearing stresses developed at the ends
B. to ovecome bursting stresses at the ends
C. to provide high bond stresses
D. to overcome cracks due to shrinkage
E. all the above.

5. The width of the flange of a T-beam should be less than
Options
A. one-third of the effective span of the T-beam
B. distance between the centres of T-beam
C. breadth of the rib plus twelve times the thickness of the slab
D. least of the above.

7. Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than
Options
A. 42 diameters from the centre of the column
B. 42 diameters from the inner edge of the column
C. 42 diameters from the outer edge of the column
D. 24 diameter from the centre of the column

8. Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by
Options
A. Rankine formula
B. Marcus formula
C. Rankine Grashoff formula
D. Grashoff formula
E. Rankine-Marcus formula.

9. If k is wobble correction factor, ? is coefficient of friction between the duct surface and the curve of tendon of radius R, the tension ratio at a distance x from either end, is
Options
A.
B.
C.
D.
E.

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