Slate
Is a metamorphic rock
Splits into thin sheets along its bedding planes
Has a smooth surface and contains alumina and silica
Possesses good water absorption capacity
Correct Answer :
A. Is a metamorphic rock
Related Questions
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 entrained concrete is used in lining walls and roofs for making
Heat insulated
Sound insulated
Neither (a) nor (b)
Both (a) and (b)
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
The concrete slump recommended for columns, is
25 to 50 mm
25 to 75 mm
75 to 125 mm
50 to 100 mm
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
In jack arch floor, the rise is kept
1/6th of the span
1/8th of the span
1/10th of the span
1/12th of the span
Pick up the correct statement from the following:
A mortar joint having a concave finishing in brick masonry, is called keyed joint
A mortar joint projecting beyond the face of a masonry wall, is called tucked joint
A mortar joint having a recess in it, is called ruled joint
All the above
Pick up the correct statement from the following:
English bond is used for brick masonry to support heavy loads
Double-Flemish bond is suitable for brick masonry to give uniform face appearance
The stretcher bond is used for the construction of half brick masonry brick
All the above
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
In which of the following directions, the strength of timber is maximum?
Parallel to grains
45° to grains
Perpendicular to grains
Same in all directions
According to National Building Code, the hydrants in water mains is provided at minimum interval of
50 m
60 m
75 m
90 m
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)
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
Number of vertical joints in a stretcher course is x times the number of joints in the header course, where x is equal to
1/2
1
2
1/4
Pick up the correct statement from the following:
Sand consists of coarse particles of silica formed due to the disintegration of rocks
The grains of sand are not affected by frost
Sand beds are permeable and do not allow water to rise up between pores due to capillary action
All the above
A temporary rigid structure having platforms to enable masons to work at different stages of a building, is known as
Scaffolding
Dead shore
Raking shore
Under pinning
The number of steps in a flight generally should not be less than
2
3
5
No limit
The lintels are preferred to arches because
Arches require more headroom to span the openings like doors, windows etc.
Arches require strong abutments to withstand arch thrust
Arches are difficult in construction
All of the above
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 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
The thickness of a reinforced brick partition wall, is generally kept
5 cm
10 cm
15 cm
20 cm
The type of footing which is used to transmit heavy loads through steel columns is
Raft foundation
Grillage foundation
Well foundation
Isolated footing
The window which is provided in flat roof of a room, is known
Dormer window
Lantern window
Louvered window
Sky window
The bearing capacity of piles is determined by
Dynamic formula
Static formula
Pile load tests
All the above
The width of the hollow space between two walls of a cavity wall should not exceed
5 cm
7.5 cm
10 cm
15 cm
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 %
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 concrete slump recommended for beams and slabs; is
25 to 50 mm
25 to 75 mm
30 to 125 mm
50 to 100 mm
The predominant constituent which is responsible for strength in granite is
Quartz
Felspar
Mica
None of the above
Gravels
Are cohesionless aggregates
Vary in size between 2 to 20 mm
Never swell when they come into contact with water
All the above