Practice Test: Question Set - 07
1. A part of the slab may be considered as the flange of the T-beam if
- (A) Flange
has adequate reinforcement transverse to beam
- (B) It
is built integrally with the beam
- (C) It
is effectively bonded together with the beam
- (D) All
the above
2. By over-reinforcing a beam, the moment of resistance can be increased not more than
- (A) 10 %
- (B) 15 %
- (C) 20 %
- (D) 25 %
3. Total pressure on the vertical face of a retaining wall of height ‘h’ per unit run exerted by the retained earth weighing ‘w’ per unit volume, is
- (A) wh [(1 - sin φ)/(1 + sin φ)]
- (B) wh² [(1 - sin φ)/(1 + sin φ)]
- (C) wh² [(1 - sin φ)/2(1 + sin φ)]
- (D) wh² [(1 - sin φ)/3(1 + sin φ)]
4. A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is
- (A) bn (fc/2) (d - n/3)
- (B) Atft (d - n/3)
- (C) ½ n1
(1 - n1/3) cbd²
- (D) All the
above
5. According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than
- (A) 5 cm
- (B) 10 cm
- (C) 15 cm
- (D) 20 cm
6. If l1 and l2 are the lengths of long and short spans of a two way slab simply supported on four edges and carrying a load w per unit area, the ratio of the loads split into w1 and w2acting on strips parallel to l2 and l1 is
- (A) w1/w2
= l2/l1
- (B) w1/w2
= (l2/l1)²
- (C) w1/w2
= (l2/l1)3
- (D) w1/w2
= (l2/l1)4
7. The live load to be considered for an accessible roof, is
- (A) Nil
- (B) 75 kg/m3
- (C) 150 kg/m2
- (D) 200 kg/cm2
8. If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and σc are the modular ratio and maximum stress in the configuration of concrete, the strength of column is
- (A) σcAc + m σcAsc
- (B) σc(A - Asc)
+ m σcAsc
- (C) σc[A +
(m - 1)ASC]
- (D) All
the above
9. On an absolutely rigid foundation base, the pressure will
- (A) Be more at
the edges of the foundation
- (B) Be
uniform
- (C) Not
be uniform
- (D) Be
zero at the centre of the foundation
10. The diameter of transverse reinforcement of columns should be equal to one-fourth of the diameter of the main steel rods but not less than
- (A) 4
mm
- (B) 5 mm
- (C) 6 mm
- (D) 7 mm
11. If longitudinally spanning stairs are casted along with their landings, the maximum bending moment per metre width, is taken as
- (A) wl²/4
- (B) wl²/8
- (C) wl²/10
- (D) wl²/12
12. If P kg/m2 is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by
- (A) D =
0.00775 aP
- (B) D =
0.0775 aP
- (C) D =
0.07775 aP
- (D) D =
0.775 Pa
13. If the shear stress in a R.C.C. beam is
- (A) Equal
or less than 5 kg/cm2, no shear reinforcement is provided
- (B) Greater
than 4 kg/cm2, but less than 20 kg/cm2, shear
reinforcement is provided
- (C) Greater
than 20 kg/cm2, the size of the section is changed
- (D) All
the above
14. For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is
- (A) 0.6
- (B) 0.7
- (C) 0.8
- (D) 0.9
15. In a singly reinforced beam
- (A) Compression
is borne entirely by concrete
- (B) Steel
possesses initial stresses when embedded in concrete
- (C) Plane
sections transverse to the centre line of the beam before bending remain plane
after bending
- (D) Elastic
moduli for concrete and steel have different values within the limits of
deformation of the beam
Next Tests: