Related Questions

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
A $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$
B $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$
C $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}{\left^2}$$
D $${\text{h}} = \sqrt {\frac{{\text{W}}}{{{\text{Aw}}}}} {\left^2}$$
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
A Working
B Damaging
C Allowable
D None of these
If ‘W’ is weight of a retaining wall and ‘P’ is the horizontal earth pressure, the factor of safety against sliding, is
A 1.0
B 1.25
C 1.5
D 2.0
If ‘H’ is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is
A 0.3 H
B 0.4 H
C 0.5 H
D 0.7 H
If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:
A Q = S + F
B Q = S - F
C Q = F - S
D Q = S × F
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
A 5-10
B 15-20
C 30-35
D 35-40
Weep holes are provided in retaining and breast walls
A To drain off the water from the filling
B To ventilate the stone masonry
C To add architectural beauty
D To increase compaction of the earth retained
Cantilever retaining walls can safely be used for a height not more than
A 3 m
B 4 m
C 5 m
D 6 m
In counterfort retaining walls, the main reinforcement in the stem at support is
A Not provided
B Provided only on inner face
C Provided only on front face
D Provided both on inner and front faces
Stones used for the construction of retaining walls must be
A Soft
B Hard
C Light
D Heavy

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