# 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*n*_{1}. If*f*and_{c}*f*are permissible compressive and tensile stresses, the moment to resistance of the beam, is_{t}- (A)

*bn*(

*f*/2) (

_{c}*d*-

*n*/3)

- (B)

*Atf*(

_{t}*d*-

*n*/3)

- (C) ½

*n*

_{1}(1 -

*n*

_{1}/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**

*l*_{1}and*l*_{2}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*w*_{1}and*w*_{2}acting on strips parallel to*l*_{2}and*l*_{1}is- (A)

*w*

_{1}/

*w*

_{2}=

*l*

_{2}/

*l*

_{1}

- (B)

*w*

_{1}/

*w*

_{2}= (

*l*

_{2}/

*l*

_{1})²

- (C)

*w*

_{1}/

*w*

_{2}= (

*l*

_{2}/

*l*

_{1})

^{3}

- (D)

*w*

_{1}/

*w*

_{2}= (

*l*

_{2}/

*l*

_{1})

^{4}

**7. The live load to be considered for an accessible roof, is**

- (A) Nil

- (B) 75 kg/m

^{3}

- (C) 150 kg/m

^{2}

- (D) 200 kg/cm

^{2}

**8. If**

*A*,_{c}*A*and_{sc}*A*are areas of concrete, longitudinal steel and section of a R.C.C. column and*m*and σ*are the modular ratio and maximum stress in the configuration of concrete, the strength of column is*_{c}- (A) σ

*+*

_{c}A_{c}*m*σ

_{c}A_{sc}- (B) σ

*(*

_{c}*A*-

*A*) +

_{sc}*m*σ

_{c}A_{sc}- (C) σ

*[*

_{c}*A*+ (

*m*- 1)

*A*]

_{SC}- (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)

*wl*²/4

- (B)

*wl*²/8

- (C)

*wl*²/10

- (D)

*wl*²/12

**12. If**

*P*kg/m^{2}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/cm

^{2}, no shear reinforcement is provided

- (B) Greater
than 4 kg/cm

^{2}, but less than 20 kg/cm

^{2}, shear reinforcement is provided

- (C) Greater
than 20 kg/cm

^{2}, 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

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