The form work from the underside of slabs, can be removed only after
1 day
4 days
7 days
14 days
Correct Answer :
C. 7 days
Related Questions
Rotary drilling is the fastest method in case of
Rocky soils
Clay soils
Sandy soil
All of these
The bond in which headers and stretchers are laid in alternate courses and every stretcher course is started with a three fourth brick bat, is known as
English cross bond
Dutch bond
Monk bond
Rat-trap bond
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
Exposed portions of vertical surface at right angles to the door or window frame, are known as
Jambs
Lintels
Reveals
Soffits
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
In which of the following pairs both trees yield soft wood?
Deodar and Shishum
Chir and sal
Sal and teak
Chir and deodar
The local swelling of a finished plaster, is termed
Cracking
Dubbing
Blistering
Hacking
The nominal thickness of an expansion joint in brick walls, is kept more than
5 mm
10 mm
15 mm
20 mm
The columns of multi-storeyed buildings are designed to withstand the forces due to
Dead loads
Live loads
Wind loads
All of these
Negative skin friction
Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile
Develops due to lowering of ground water
Both (a) and (b)
Neither (a) not (b)
The depth of concrete bed of the foundation depends upon
The projection of the concrete block beyond the footing over it
The upward soil pressure
The mix of the concrete
All the above
In case of Raymond pile
Lengths vary from 6 m to 12 m
Diameter of top of piles varies from 40 cm to 60 cm
Diameter of pile at bottom varies from 20 cm to 28 cm
All the above
The angle between skew back of a flat arch and the horizontal, is kept approximately equal to
0°
30°
60°
90°
The floor is rubbed with oxalic acid, for making its surface
Free from voids
Glossy
Durable
Uniform
The inner section of a cavity wall, is generally known as
Buttress
Leaf wall
Pilaster
Pillar
Stability of an existing structure may be disturbed by
Rising of water table
Vibrations caused by traffic movements
Mining in the neighbourhood
All the above
The rock formed from the solidification of molten matter (magma) is called:
Sedimentary rock
Metamorphic rock
Igneous rock
None of the above
Which of the following metal sheets is most effective in preventing dampness?
Copper sheets
Lead sheets
Aluminium sheets
All the above
The type of pointing in which a V-shaped projection outside the wall surface, is provided, is called
Recessed pointing
Weather pointing
V-pointing
Tuck pointing
To construct a 10 cm thick partition wall, you will prefer
English bond
Flemish bond
Header bond
Stretcher bond
Cavity wall is generally provided for
Heat insulation
Sound insulation
Prevention of dampness
All the above
The type of joint commonly used at the junction of a principal rafter and tie beam in timber trusses is
Mortise and tenon joint
Oblique mortise and tenon joint
Butt joint
Mitred joint
The vertical sides of a door and window openings provided in a wall, are known as
Verticals
Reveals
Jambs
None of these
The type of arch generally constructed over a wooden lintel or over a flat arch for the purpose of carrying the load of the wall above is
Segmental arch
Pointed arch
Relieving arch
Flat arch
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
The Auger borings are not common
In soils that require lateral support
In cohesive soils
In soft soils
None of the above
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
For effective drainage, the finished surface of flat roof should have a minimum slope of
1 in 20
1 to 50
1 in 10
1 in 5
In English garden wall bond
One course of headers to three or five course of stretchers
Queen closer in provided in each heading course
The middle course of stretchers is started with a header to give proper vertical joints
All the above
The brick laid with its breadth parallel to the face of a wall, is known as
Header
Stretcher
Closer
None of these