During percussion drilling
Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole
Caving or mixing of strata are caused in soft soils or cohesionless soils
The soil to a considerable depth below the bottom of the hole gets disturbed
All the above
Correct Answer :
D. All the above
Related Questions
The floor is rubbed with oxalic acid, for making its surface
Free from voids
Glossy
Durable
Uniform
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
The type of bond in a brick masonry containing alternate courses of stretchers and headers, is called
Flemish bond
English bond
Stretcher bond
Header bond
The least bearing capacity of soil is that of
Hard rock
Moist clay
Soft rock
Coarse sandy soil
In the construction of arches, sand box method is used for
Centring
Actual laying of arch work
Striking of centring
None of the above
The bearing capacity of a water logged soil, may be improved by
Grouting
Chemical action
Drainage
Compaction
Which one of the following factors is considered for the orientation of buildings?
The direction of the prevailing winds in the area
The exposure of the walls and roof of the buildings to the rays of sun
The extent up to which the sunrays penetrate with the verandah
All the above
Minimum width of landing should be
Equal to width of stairs
Half the width of stairs
Twice the width of stairs
One fourth the width of stairs
The depth of an arch is the distance between
Ground level and springing line
Crown and springing line
Crown and ground level
Intrados and extrados
The process of filling hollow spaces of walls before plastering, is known
Hacking
Dubbing out
Blistering
Peeling
The stepped structure provided for lateral support of a structure, is
Retaining wall
Breast wall
Buttress
Parapet wall
The form work from the sides of beams can be removed only after
1 day
4 days
7 days
14 days
In grillage foundations, distance between flanges of grillage beams, is kept
40 cm
Equal to flange width
Twice the flange width
Maximum of (a), (b) and (c)
The inclined support at the ends of treads and rises of a stair, is known as
Baluster
Header
String
Beam
The predominant constituent which is responsible for strength in granite is
Quartz
Felspar
Mica
None of the above
The lower half portion between crown and skew back of the arch, is called
Spandril
Haunch
Springing
Soffit
Auger boring
Is the most primitive method for making a hole in the ground
Is generally employed in cohesive and other self soils above water table
Is most economical upto a depth of 5 metres
All the above
The maximum permissible deflection of a timber beam supporting a roof, is
L/100
L/150
L/260
L/360
The maximum number of steps in a flight should generally be restricted to
10
12
15
No limit
The bearing capacity of a water logged soil can be improved by
Compacting the soil
Draining the soil
Increasing the depth of foundation
Grouting
The depth of the ground water table may be ascertained by
Looking through the well in the vicinity
Standing on the well in the vicinity
Measuring the depth of water in the well
None of the above
The Auger boring method is not suitable for
Very hard soil
Cemented soil
Vary soft soil
All the above
To support a heavy structure in sandy soil, the type of foundation generally used, is
Combined footing
Raft footing
Pier footing
Strap footing
The range of spread from the wall base to outer edge of a brick work foundation does not exceed
1/2 horizontal to 1 vertical
2/3 horizontal to 1 vertical
1 horizontal to 1 vertical
2 horizontals to 1 vertical
A concrete structure is set on fire and the temperature raises to 1000°C. The strength of concrete as compared to original strength reduces to
10 %
15 %
20 %
25 %
Pick up the incorrect statement from the following:
Horizontal D.P.C. is provided at plinth level in internal walls
D.P.C. is provided under door and verandah openings
Vertical D.P.C. is not provided in internal walls
Cement concrete is a rigid damp-proofing material
Pile foundation is generally provided if soil is
Compressible
Water logged
Made up
All the above
The vertical side member of a shutter frame, is known
Style
Reveal
Mullion
Post
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
Safe bearing capacity of black cotton soil varies from
2 to 3 t/m2
5 to 7.5 t/m2
8 to 10 t/m2
10 to 12 t/m2