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Home » Engineering » Civil Engineering » Aptitude Test - 23
1.longitudinal bars and lateral stirrups, is___?
A. Stress in concrete � area of concrete
B. Stress in steel � area of steel
C. Stress in concrete � area of concrete + Stress in steel � area of steel
D. Stress in concrete � area of concrete
2.The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of_?
A. 10 mm
B. 15 mm
C. 20 mm
D. 10 mm
3.The maximum permissible size of aggregates to be used in casting the ribs of a slab, is____?
A. 5 mm
B. 7.5 mm
C. 10 mm
D. 5 mm
4.Top bars are extended to the projecting parts of the combined footing of two columns Ldistance apart for a distance of____?
A. 0.1 L from the outer edge of column
B. 0.1 L from the centre edge of column
C. Half the distance of projection
D. 0.1 L from the outer edge of column
5.is the pre- stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is__?
A. f = (P/A) � (Z/M)
B. f = (A/P) � (M/Z)
C. f = (P/A) � (M/Z)
D. f = (P/A) � (Z/M)
6.If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young�s modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is__?
A. (1 � C) mf � eE
B. (C � 1)mf + eE
C. (C � 1)mf � eE
D. (1 � C) mf � eE
7.An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus?
A. Triangular load of the wall
B. UDL of wall
C. UDL of wall + load from the roof
D. Triangular load of the wall
8.The minimum clear cover for R.C.C. columns shall be?
A. Greater of 40 mm or diameter
B. Smaller of 40 mm or diameter
C. Greater of 25 mm or diameter
D. Greater of 40 mm or diameter
9.The design of heel slab of a retaining wall is based on the maximum bending moment due to?
A. Its own weight
B. Weight of the soil above it
C. Load of the surcharge, if any
D. Its own weight
10.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. Within the flange
11.The minimum thickness of a flat slab is taken?
A. L/32 for end panels without drops
B. L/36 for end panels without drops
C. L/36 for interior panels without drop
D. L/32 for end panels without drops
12.An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is_?
A. Safe in shear
B. Is safe with stirrups
C. Is safe with stirrups and inclined members
D. Safe in shear
13.A pre-cast pile generally used, is__?
A. Circular
B. Square
C. Octagonal
D. Circular
14.In a pre-stressed member it is advisable to use?
A. Low strength concrete only
B. High strength concrete only
C. Low strength concrete but high tensile steel
D. Low strength concrete only
15.Steel bars are generally connected together to get greater length than the standard length by providing?
A. Straight bar splice
B. Hooked splice
C. Dowel splice
D. Straight bar splice
16.If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a?
A. Simply supported beam
B. Continuous beam
C. Cantilever beam
D. Simply supported beam
17.For M 150 grade concrete (1:2:4) the moment of resistance factor is?
A. 0.87
B. 8.5
C. 7.5
D. 0.87
18.The self-weight of the footing, is__?
A. Not considered for calculating the upward pressure on footing
B. Also considered for calculating the upward pressure on footing
C. Not considered for calculating the area of the footing
D. Not considered for calculating the upward pressure on footing
19.If the bearing capacity of soil is 10 tonnes/cm2 and the projection of plain concrete footing from walls, is a cm, the depth D of footing is?
A. D = 0.0775 a
B. D = 0.775 a
C. D = 0.775 a1
D. D = 0.0775 a
20.After pre-stressing process is completed, a loss of stress is due to?
A. Shrinkage of concrete
B. Elastic shortening of concrete
C. Creep of concrete
D. Shrinkage of concrete
21.If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width?
A. R + T
B. T � R
C. 2 + T2
D. R + T
22.The transverse reinforcements provided at right angles to the main reinforcement?
A. Distribute the load
B. Resist the temperature stresses
C. Resist the shrinkage stress
D. Distribute the load
23.In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of_?
A. One -half lever arm of the section
B. One-third lever arm of the section
C. Lever arm of the section
D. One -half lever arm of the section
24.High strength concrete is used in pre-stressed member_?
A. To overcome high bearing stresses developed at the ends
B. To overcome bursting stresses at the ends
C. To provide high bond stresses
D. To overcome high bearing stresses developed at the ends
25.If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm2 and 1400 kg/cm2 respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is_?
A. 0.50%
B. 0.60%
C. 0.70%
D. 0.50%
26.In a mortar, the binding material is
A. cement
B. sand
C. surkhi
D. cement
27.Lacquer paints
A. are generally applied on structural steel
B. are less durable as compared to enamel paints
C. consist of resin and nitro-cellulose
D. are generally applied on structural steel
28.Wrought iron contains carbon upto
A. 0.25%
B. 1.00%
C. 1.50%
D. 0.25%
29.Pick up the polymineralic rock from the following:
A. Quartz sand
B. Pure gypsum
C. Magnesite
D. Quartz sand
30.Pick up the correct statement from the following:
A. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
B. For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
C. For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55
D. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
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