Civil engineer objective questions – Structural Analysis and Design (Section-14)

326. For a cantilever of effective depth of 50cm, the maximum span to satisfy the vertical deflection limit is

a ) 3.0m

b ) 3.5m

c ) 4.0m

d ) 4.5m

327. Generally compressive strength of cover block is more than the compressive strength of the concrete . The main function of cover block is

a ) maintain cover side of steel

b ) maintain cover between steel and formwork

c) maintain cover above steel

d) maintain cover below steel

328. In a singly reinforced

a ) compression is borne entirely by concrete beam

b ) steel possesses initial stresses wheb embedded in concrete

c ) plane sections traverse to the center line of the beam before bending remain plane even after bending ) maintain cover above steel

d ) elastic modulii of concrete and steel have different values within the limits of deformation of the beam

329. In a singly reinforced beam , the effective depth is measured from its compression edge to

a ) tensile edge

b ) tensile reinforcement

c ) neutral axis of the beam equal to

d ) longitudinal central axis

330. The anchorage value of standard hook is taken as 16 times the diameter of the reinforcing bar , if the angle of the bend is

a ) 30⁰

b ) 40⁰

c ) 180 °

d ) any of the above

331. For bars in tension a standard hook has an anchorage value equivalent to a straight length of

a ) 8Φ

b ) 12Φ

c ) 16Φ

d ) 20Φ

333. The reinforcement is bent at an inclination of ********* at the ends of the beam .

a ) 45⁰

b ) 60⁰

c ) 135°

d ) 90⁰

334. Due to shrinkage stress , a simply supported beam having reinforcement only at bottom tends to

a ) deflect downward

b ) deflect upward

c ) deflect upward or downward

d ) none of the above

335. Steel beam theory is used for

a ) design of simple steel beams

b ) steel beam incased in concrete

c ) beam if shear exceeds 4 times allowable shear stress

d ) doubly reinforced beams ignoring compressive stress in concrete

336. According to steel beam theory of doubly reinforced beams

a ) tension is resisted by tension steel

b ) compression is resisted by compression steel

c ) stress in tension steel equals the stress in compression steel

d ) no stress is developed in compression as well as tension concrete

e ) all of the above

337. A simply supported beam shall be deemed to be a deep beam if the ratio of effective span to overall depth , is

a ) 2

b ) 2.5

c ) 3

d ) 3.5

338. A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth , is

a ) 2

b ) 2.5

c ) 3

d ) 3.5

339. The steel generally used in RCC work is

a ) stainless

b ) mild steel

c ) high carbon steel

d ) high tension steel

340. A beam curved in plan is designed for

a ) bending moment and shear

b ) bending moment and torsion

c ) shear and torsion

d ) bending moment , shear and torsion

342. The neutral axis of a T – beam exists

a ) within the flange

b ) at the bottom edge of the slab

c ) below the slab

d ) all of the above

343. A T – beam behaves like a rectangular beam of width equal to its flange if its neural axis

a ) remains within the flange

b ) remains within the web

c ) coincide with geometrical center of the beam

d ) none of the above

344. In a T beam over all depth of rib ( in case of heavy load)

a ) 1/20 of the span

b ) 1/15 of the span

c ) 1/12 of the span

d ) none of the above

345. The minimum cover in a slab is neither less than the diameter of bar nor less than

a ) 15mm

b ) 20mm

c ) 25mm

d ) 30mm

346. For a continuous slab of 3mx3.5m size, the minimum overall depth of slab to satisfy vertical deflection limit is,

a ) 5cm

b ) 7.5cm

d ) 12cm

c ) 9cm

347. The ratio of the diameter of reinforcing bars and the slab thickness should not be greater than

a ) 1/5

b ) 1/6

c ) 1/7

d ) 1/8

348. The pitch of the main bars in a simply supported slab, should not exceed its depth by

a ) three times

b ) four times

c ) five times

d ) six times

349. Distribution reinforcement in a simply supported slab is provided to distribute

a ) load

b ) temperature stress

c ) shrinkage stress

d ) all of the above

350. In a simply supported slab , alternate bars are curtailed at

a ) 1/4 of the span

b ) 1/5 of the span

c ) 1/6 of the span

d )  1/7 of the span

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