If the depth of an excavation is 20 metres, number of single stage well points to be installed at various levels, is
5
4
3
2
Correct Answer :
C. 3
Related Questions
A stair should not have pitch more than
25°
30°
40°
50°
Exposed portions of vertical surface at right angles to the door or window frame, are known as
Jambs
Lintels
Reveals
Soffits
The vertical sides of a door and window openings provided in a wall, are known as
Verticals
Reveals
Jambs
None of these
The piece of a brick cut along the centre of width in such a way that its length is equal to that of full brick, is called
Half brick
Queen closer
King closer
Bevelled closer
The vertical posts placed at the top and bottom ends of a flight supporting the hand rail are known as
Balusters
Newel posts
Balustrades
Railings
If (φ) is the angle of repose of soil of weight w kg/m3, the horizontal pressure p at a depth of h metres per metre length of wall, is
wh × [(1 - sin φ)/(1 + sin φ)]
(wh/2) × [(1 - sin φ)/(1 + sin φ)]
wh × √[(1 - sin φ)/(1 + sin φ)]
wh × √[(1 + sin φ)/(1 - sin φ)]
To ensure that supporting area of an offset footing of a boundary wall is fully compressive, the C.G. of load must act
At the centre of the base
Within the middle third of the base
Within the middle fifth of the base
Neither (a), (b) nor (c)
Pick up the incorrect statement from the following:
In Flemish bond, headers and stretchers are laid alternately in the same course
In Flemish bond every header in each course lies centrally over every stretcher of the underlying course
In English bond, stretchers are laid in every course
In English bond, headers and stretchers are laid in alternate courses
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
Pitched and sloping roofs are suitable for
Coastal regions
Plain regions
Covering large areas
All of the above
The stone whose crushing strength is maximum, is
Granite
Chalk
Slate
Sand stone
The sound which continues even after its source is cut off, is called
Reverberation
Echo
Intensity of sound
Interference
Pick up the correct statements from the following:
Cracks appear on the plastered surface in the form of hair cracks
In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
Excessive thermal variations in the backing or plaster causes the plaster to fall
All the above
Pick up the incorrect statement from the following:
In dog-legged stairs, no space between its flights is provided
In open newel stair, a rectangular well is provided
In geometric stair, a curved shaped well between forward and backward flights, is provided
In geometrical stair, two quarter space landing is provided
Cast iron piles
Are suitable for works under sea water
Resist shocks or vibrations
Are suitable for use as batter piles
Are useful for heavy vertical loads
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
In the construction of arches, sand box method is used for
Centring
Actual laying of arch work
Striking of centring
None of the above
A wooden block fixed on back side of a door frame on its post, is known as
Cleat
Stop
Horn
None of these
The triangular space formed between the extrados and the horizontal line drawn through the crown of an arch is known as
Haunch
Spandril
Voussoirs
Skewbacks
The important test to be conducted on a stone used in docks and harbours is
Hardness test
Workability test
Weight test
Toughness test
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
The type of ashlar masonry in which stones are finely chisel dressed and thickness of joints does not exceed 3 mm, is
Chamfered ashlar masonry
Ashlar facing masonry
Random coursed ashlar masonry
Coursed ashlar masonry
A solid core of rock is formed inside the cylinder in the case of
Auger boring
Percussion drilling
Diamond drilling
Wash boring
The minimum strength of the mortar used in load bearing brick masonry, is
50 N/cm2
100 N/cm2
150 N/cm2
200 N/cm2
The vertical faces of a door opening which support frame of the door, are
Jambs
Posts
Reveals
Styles
The process of keeping concrete moist for a certain period after its finishing, is known as
Finishing of concrete
Curing of concrete
Placing of concrete
Compaction of concrete
The minimum thickness of walls built in cement mortar (1 : 6) for a single storey building, is
10 cm
15 cm
20 cm
25 cm
A wall constructed to resist the pressure of an earth filling, is called
Retaining wall
Breast wall
Buttress
Parapet wall
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
Pick up the commonly adopted geophysical method in civil engineering from the following:
The seismic method
Electrical resistivity method
Gravitational method
Both (a) and (b) of the above