The loose pockets in soil mass can be bridged safely by providing a raft foundation provided the soft area is smaller than
The column spacing
One-third the column spacing
Half the column spacing
Three-fourth the column spacing
Correct Answer :
B. One-third the column spacing
Related Questions
The process of working a flat for the finishing coat, is known
Dubbing out
Floating
Knitting
Blistering
Ornamental moulded course placed on the top of a wall, is
Cornice
Coping
Frieze
Lintel
The thickness of a reinforced brick partition wall, is generally kept
5 cm
10 cm
15 cm
20 cm
Pick up the correct statement from the following:
Inclined borings are made for taking samples under existing structures
Inclined borings are occasionally used instead of vertical holes
The spacing of inclined borings is kept such that one bore hole is vertically above the bottom of an adjacent bore hole
All the above
The inclined surface of an abutment to receive the arch, is known as
Skew back
Soffit
Spandril
Haunch
Pick up the correct statement from the following:
Cavity of a cavity wall should start near ground level
Cavity of a cavity wall should terminate near eaves level of sloping roof
Cavity of a cavity wall should terminate near coping of flat roof with parapet wall
All the above
The service area in a building means the area occupied by
Stairs
Toilets
Light and shafts
All the above
The under surface of an arch, is called
Soffit
Intrados
Haunch
Back
The size of a floor tile commonly used, is
15 cm × 15 cm × 1.8 cm
20 cm × 20 cm × 2 cm
22.5 × 22.5 cm × 2.2 cm
All the above
Raft foundations are used for:
Providing increased area of foundation over poor bearing capacity of soil
Spanning over small soft or loose pockets
Counter acting the hydrostatic effect
All the above
The type of pile which is driven at an inclination to resist inclined forces is known as
Friction pile
Sheet pile
Batter pile
Anchor pile
In case of foundations on black cotton soils, the most suitable method to increase the bearing capacity of soils is to
Increase the depth of foundation
Drain the soil
Compact the soil
Replace the poor soil
In clay soil
Swelling and shrinkage characteristics prevail
Consolidation continues even after several years of construction
Differential settlement is generally prevalent
All the above
Pick up the correct statement from the following:
A combined footing is so proportioned that centre of gravity of supporting area coincides with centre of gravity of two column loads
A combined footing may be either rectangular or trapezoidal in shape
Trapezoidal shaped footings may be provided under any loading
All the above
The black cotton soil
Undergoes volumetric changes
Swells excessively when wet
Shrinks excessively when dry
All the above
The foundation in which a cantilever beam is provided to join two footings, is known as
Strip footing
Strap footing
Combined footing
Raft footing
The horizontal timber piece provided at the apex of a roof truss which supports the common rafter is called
Ridge board
Hip rafter
Eaves board
Valley rafter
Pile foundations are suitable for
Water logged soils
Soft rocks
Compact soils
Multi-storeyed buildings
The vertical sides of a door and window openings provided in a wall, are known as
Verticals
Reveals
Jambs
None of these
The ceiling height of a building is
Between ceiling and ground level
Between ceiling and floor level
Upto roof above ground level
Upto ceiling from the ground level
The window which projects outside a room of a building for admitting more light and air, is known
Bay window
Casement window
Lantern window
Dormer window
A pointed arch which forms isosceles or equilateral triangle, is generally known as
Three centred arch
Two centred arch
Lancet arch
Bull's eye arch
An ordinary concrete may be made water proof by adding
Pudlo
Impermo
Snowcem
All of these
The construction joints in buildings are provided after
10 m
15 m
20 m
40 m
In soft clay of low bearing capacity, the type of steel pile generally used, is
H-pile
Screw pile
Disc pile
Pipe pile
Nogging of a common wooden partition is
Upper horizontal wooden member
Lower horizontal wooden member
Intermediate horizontal wooden member
Vertical wooden member
In high mountainous region, the type of roof generally recommended for buildings, is
Shed type
Gable type
Gambrel type
Mansard type
To obtain good bonding in brick masonry
First class bricks are used
Vertical joints in alternate courses are kept in plumb line
Bats are used where necessary
All the above
Pick up the correct statement from the following:
The sand in the sand pile is well compacted
The sand is kept moist at the time of placing and tamping
Sand piles are generally used under column loads
All of the above
The maximum permissible deflection of a timber beam supporting a roof, is
L/100
L/150
L/260
L/360