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
Correct Answer :
D. All the above
Related Questions
The arrangement made to support an unsafe structure temporarily, is known as
Shoring
Scaffolding
Underpinning
Jacking
The triangular portion between any two adjacent arches and the tangent to their crowns, is
Haunch
Spandril
Soffit
Rise
Expansion joints in masonry walls are provided if length exceeds
10 m
20 m
30 m
40 m
Pick up the incorrect statement from the following:
The function of foundation is to distribute the load of super structure over a large bearing area
No timbering is required for shallow trenches
Shallow foundations can be constructed on made-up soil
Black cotton soil is very good for foundation bed
The type of flooring suitable for use in churches, theatres, public libraries and other places where noiseless floor covering is desired is
Cork flooring
Glass flooring
Wooden flooring
Linoleum flooring
The disease of dry rot in timber is caused by
Lack of ventilation
Alternate wet and dry conditions
Complete submergence in water
None of the above
For providing a raft foundation, the following activities are involved
1. Ramming the foundation bed
2. Excavation of the soil upto required depth
3. Laying the reinforcement over the foundation bed
4. Curing the cement concrete placed over reinforcement
5. Pouring the cement concrete over the reinforcement The correct sequence is
1, 2, 3, 4, 5
5, 4, 3, 2, 1
2, 1, 3, 5, 4
3, 2, 5, 1, 4
The vertical faces of a door opening which support frame of the door, are
Jambs
Posts
Reveals
Styles
In verandah floors outward slope is
1 in 40
1 in 50
1 in 60
1 in 70
For the construction of flyovers in sandy soils, the type of foundation provided, is
Strap footing
Raft footing
Combined footing
Pier footing
In case of foundations on sandy soil, maximum permissible differential settlement, is usually limited to
15 mm
25 mm
35 mm
45 mm
To support a heavy structure in sandy soil, the type of foundation generally used, is
Combined footing
Raft footing
Pier footing
Strap footing
The projections of head or sill of a door or window frame are
Transoms
Horns
Stops
Chocks
To stagger vertical joints in successive courses of a wall, a piece of brick is generally used at the end of the course, which is known as
Bat
Header
Stretcher
Closer
In a colar beam roof
There is no horizontal tie beam
There is a horizontal tie at the feet of rafters only
There is a horizontal tie at almost the middle of rafters only
There are two horizontal ties, one at the feet and other at the middle of the rafters
For plastering the exposed brick walls, the cement sand mortar should be
1 : 2
1 : 3
1 : 4
1 : 6
A cut in frame of a door to receive the shutter, is called
Louver
Stop
Horn
Rebate
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
Two columns 50 cm × 50 cm and 60 cm × 60 cm carry 80 tonnes and 120 tonnes of loads respectively. The centre to centre distance between columns is 5.00 metres. The permissible bearing capacity of the soil is 20 t/m2. If the footing is not to project more than 25 cm beyond the outside of the smaller column, pick up the correct design parameters of the footing from the following:
Distance of C.G. of the loads from the smaller column = 3.00 m
The length of the foundation slab = 7.00 m
Area of footing slab = 11.00 m2
All the above
Pick up the correct specification of one-room quarters generally adopted from the following:
Six quarters in a row
The size of room is either 3.5 m × 3 m or 4.2 m × 2.5 m
The front verandah is kept 2 m wide
All the above
Suitable spacing of timber piles, is
50 cm
60 cm
80 cm
90 cm
The process of making the back ground rough, before plastering, is
Dubbing
Hacking
Blistering
Peeling
Pick up the correct statement from the following:
The cost of square rooms is less
The expenditure on the foundation and roof for the double storeyed building is nearly half of that for the ground storeyed building
The cost of construction of a house may be minimised by restricting the height floors
All the above
If height of the first storey of a building is 3.2 m and riser is 13 cm, the number of treads required, is
12
18
24
25
Dutch bond is a modification of
English bond
Stretcher bond
Header bond
Single Flemish bond
An arch may fail due to
Uneven settlement of abutments
Sliding of voussoirs
Crushing of the material
All the above
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
Sum of tread and rise must lie between
300 to 350 mm
400 to 450 mm
500 to 550 mm
600 to 650 mm
Mansard roof is a roof which slopes in
Two directions without break in the slope on each side
Two directions with break in the slope on each side
Four directions without break in the slope on each side
Four directions with break in the slope on each side
Arches in the form of masonry arcs struck from more than four centres, are called
Two curved arches
Gothic arches
Ogee arches
Drop gothic arches