CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

The critical section for finding maximum bending moment for footing under masonry wall is located

at the edge of the wall

at a distance equal to effective depth of footing from the edge of the wall

halfway between the middle and edge of the wall

at the middle of the wall

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In counterfort type retaining walls i) the vertical slab is designed as a continuous slab ii) the heel slab is designed as a continuous slab iii) the vertical slab is designed as a cantilever iv) the heel slab is designed as a cantilever The correct answer is

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(iii) and (iv)

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If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are

3.0 m and 1.5 m

1.5 m and 1.5 m

1.5 m and 3.0 m

3.0 m and 3.0 m

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The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than

0.12

0.13

0.15

0.14

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High carbon content in the steel causes

decrease in tensile strength but increase in ductility

increase in tensile strength but decrease in ductility

increase in both tensile strength and ductility

decrease in both tensile strength and ductility

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The main reinforcement in the toe of a T- shaped R C. retaining wall is provided on i) top face parallel to the wall ii) top face perpendicular to the wall iii) bottom face paralleUo the wall iv) bottom face perpendicular to the wall The correct answer is

only (ii) is correct

(iii) and (iv) are correct

only (iv) is correct

(i) and (ii) are correct

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In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

tensile

zero

compressive

tensile or compressive

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In order to obtain the best workability of concrete, the preferred shape of aggregate is

elongated

All of these

rounded

angular

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In a spherical dome the hoop stress due to a concentrated load at crown is

zero

partly compressive and partly tensile

compressive everywhere

tensile everywhere

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For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be

750 mm

600 mm

more than 1 m

900 mm

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YOUR ANSWER : ?

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