Question 1

If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends, the distance from either end over which stirrups for the shear, are provided, is

Accepted Answer

A)  (L/2)  (1 - 3/qmax) 
B)  (L/3)  (1 - 5/qmax) 
C)  (L/2)  (1 - 5/qmax) 
D)  (L/2)  (1 - 2/qmax)  C

Question 2

A pre-stressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip his

Accepted Answer

A)  WL/P
B)  WL/2P
C)  WL/3P
D)  WL/4P C

Question 3

If longitudinally spanning stairs are casted along with their landings, the maximum bending moment per metre width, is taken as

Accepted Answer

A)  wl²/4
B)  wl²/8
C)  wl²/10
D)  wl²/12 B

Question 4

If is the load on a circular slab of radius , the maximum radial moment at the centre of the slab, is

Accepted Answer

A)  WR²/16
B)  2WR²/16
C)  3WR²/16
D)  5WR²/16

Question 5

Pick up the assumption for the design of a pre-stressed concrete member from the following:

Accepted Answer

A)  A transverse plane section remains a plane afterbending
B)  During deformation limits, Hook'slaw is equally applicable to concrete as well asto steel
C)  Variation of stress in reinforcement due to changes in external loading is negligible
D)  All the above

Question 6

For initial estimate for a beam design, the width is assumed

Accepted Answer

A)  1/15th of span
B)  1/20th of span
C)  1/25th of span
D)  1/30th of span

Question 7

If the length of a combined footing for two columns l metres apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where is the distance of centre of gravity of column loads).

Accepted Answer

A)  y = L - (l - ) 
B)  y = L/2 + (l - ) 
C)  y = L/2 - (l + ) 
D)  y = L/2 - (l - )

Question 8

If the length of an intermediate span of a continuous slab is 5m, the length of the end span is kept

Accepted Answer

A)  4.5 m
B)  4.0 m
C)  3.5 m
D)  3.0 m

Question 9

If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

Accepted Answer

A)  h = (W/Aw) [(1 - ) /(1 + sin ) ]
B)  h = (W/Aw)  [(1 + ) /(1 + sin ) ]
C)  h = (W/Aw)  [(1 - ) /(1 + sin ) ]²
D)  h W/Aw)  [(1 - ) /(1 + sin ) ]²

Question 10

Total pressure on the vertical face of a retaining wall of height per unit run exerted by the retained earth weighing per unit volume, is

Accepted Answer

A)  wh [(1 - ) /(1 + sin ) ]
B)  wh² [(1 - ) /(1 + sin ) ]
C)  wh² [(1 - ) /2(1 + sin ) ]
D)  wh²[(1 - ) /3(1 + sin ) ]

Question 11

If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

Accepted Answer

A)  D = W (a - b) /4a²bq
B)  D = W (a² -b²) /4a²bq
C)  D = W (a² -b²) /8a²bq
D)  D = W (a² - b²) /4abq

Question 12

If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is

Accepted Answer

A)  w (R + T) /T
B)  w (R² + T²) /T
C)  w (R + T) /T.
D)  w (R/T)

Question 13

If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge

Accepted Answer

A)  Is increased byPZ/e
B)  Is increased byPe/Z
C)  Is decreased by Pe/Z
D)  Remainsunchanged

Question 14

Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by

Accepted Answer

A)  Rankine formula
B)  Marcus formula
C)  Rankine Grashoff formula
D)  Grashoffformula

Question 15

If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is

Accepted Answer

A)  cAc + m cAsc
B)  c(A - Asc)  + m cAsc
C)  c[A + (m - 1) ASC]
D)  All the above

Question 16

An R.C.C. column is treated as short column if its slenderness ratio is less than

Accepted Answer

A)  30
B)  35
C)  40
D)  50

Question 17

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

Accepted Answer

A)  bn (fc/2)  (d - n/3) 
B)  Atft (d - n/3) 
C)  ½ n1 (1 - n1/3)  cbd²
D)  All the above

Question 18

If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by

Accepted Answer

A)  (5/6)  (r/1 + r²)  M
B)  (5/6)  (r²/1 + r²) M
C)  (5/6)  (r²/1 + r3) M
D)  (5/6)  (r²/1 + r4)  M

Question 19

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

Accepted Answer

A)  D = 0.00775 a?P
B)  D = 0.0775 a?P
C)  D = 0.07775 a?P
D)  D = 0.775 P?a

Question 20

The modular ratio m of a concrete whose permissible compressive stress is C, may be obtained from the equation.

Accepted Answer

A)  m = 700/3C
B)  m = 1400/3C
C)  m = 2800/3C
D)  m = 3500/3C

Exam 2: Civil Engineering Design and Analysis