|
1) In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are______________? a. 6 legged b. 8 legged c. 10 legged d. 12 legged
|
||||
|
2) If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is________________? a. WR²/16 b. 2WR²/16 c. 3WR²/16 d. Zero
|
||||
|
3) The weight of reinforced concrete, is generally taken as______________? a. 2200 kg/m3 b. 2300 kg/m3 c. 2400 kg/m3 d. 2500 kg/m3
|
||||
|
4) A retaining wall and is the horizontal earth pressure, the factor of safety If is weight of against sliding, is_____________? a. 1.0 b. 1.25 c. 1.5 d. 2.0
|
||||
|
5) In a beam the local bond stress Sb, is equal to_______________? a. Shear force/(Leaver arm × Total perimeter of reinforcement) b. Total perimeter of reinforcement/(Leaver arm × Shear force) c. Leaver arm/(Shear force × Total perimeter of reinforcement) d. Leaver arm/(Bending moment × Total perimeter of reinforcement)
|
||||
|
6) With usual notations the depth of the neutral axis of a balanced section, is given by______________? a. mc/t = (d – n)/n b. t/mc = (d – n)/n c. t/mc = (d + n)/n d. mc/t = n/ (d – n)
|
||||
|
7) If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm2, the length of the beam having nominal reinforcement, is________________? a. 8 cm b. 6 m c. 8 m d. 10 m
|
||||
|
8) If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________? a. WL/2 b. WL/4 c. WL/6 d. WL/8
|
||||
|
9) The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called_________________? a. Balanced section b. Economic section c. Critical section d. All the above
|
||||
|
10) An under-reinforced section means_________________? a. Steel is provided at the underside only b. Steel provided is insufficient c. Steel provided on one face only d. Steel will yield first
|
||||
|
11) The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or____________________? a. 12 bar diameters b. 18 bar diameters c. 24 bar diameters d. 30 bar diameters
|
||||
|
12) In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________? a. mc/t = n/(d – n) b. (m + c)/t = n/(d + n) c. (t + c)/n = (d + n)/n d. mc/t = (d – n)/t
|
||||
|
13) The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as________________? a. Freyssinet system b. Magnel-Blaton system c. C.C.L. standard system d. Lee-McCall system
|
||||
|
14) The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes_______________? a. With the horizontal b. With the vertical c. With the perpendicular to the inclined plane of the soil d. None of these
|
||||
|
15) A raft foundation is provided if its area exceeds the plan area of the building by______________? a. 10 % b. 20 % c. 40 % d. 50 %
|
||||
|
16) A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth, is______________? a. 2.5 b. 2.0 c. Less than 2 d. Less than 2.5
|
||||
|
17) The effective span of a simply supported slab, is_______________? a. Distance between the centres of the bearings b. Clear distance between the inner faces of the walls plus twice the thickness of the wall c. Clear span plus effective depth of the slab d. None of these
|
||||
|
18) In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength______________? a. 100 kg/cm2 b. 200 kg/cm2 c. 300 kg/cm2 d. 400 kg/cm2
|
||||
|
19) intensity of pressure at a depth h on a block of earth weighing w per unit If p1 is the vertical______________? a. wh (1 – cos )/(1 + ) p2 is b. wh (1 – sin )/(1 + ) ) c. wh (1 – tan )/(1 + d. w (1 – cos )/h (1 + sin )
|
||||
|
20) According to I.S. 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than______________? a. 20 cm b. 30 cm c. 40 cm d. 75 cm
|
||||
