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
Correct Answer :
D. All the above
Related Questions
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
To construct a 10 cm thick partition wall, you will prefer
English bond
Flemish bond
Header bond
Stretcher bond
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)]
Pick up the incorrect statement from the following:
Cement is added to lime mortar to increase its hydraulic properties only
Lime surkhi mortar is used for pointing the walls
Lime should be slaked before preparing lime mortar
High early strength concrete is generally used in cold weather
Pick up the correct statement from the following:
In a king post truss, principal rafter and tie beams are jointed together with a bridle joint
Joint between the principal rafter and the king post is made by making tenon and mortise respectively
Joint between strut and king post, is generally of mortise and tenon type
All the above
Open test pit is only suitable upto a depth of
2 metres
2.5 metres
3 metres
None of the above
The type of pointing in which upper side of mortar joints is kept about 12 mm inside the face of the masonry and bottom is kept flushed with face of wall, is
Truck pointing
Recessed pointing
Struck pointing
Grooved pointing
In places where the soil is soft and has small resistance to the flow of concrete, which one of the following types of piles, is used
Vibro pile
Pressure pile
Franki pile
Pedestal pile
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
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
The local swelling of a finished plaster, is termed
Cracking
Dubbing
Blistering
Hacking
Depth of lean concrete bed placed at the bottom of a wall footing, is kept
10 cm
15 cm
Equal to its projection beyond wall base
Less than its projection beyond wall base
The piece of a brick cut with its one corner equivalent to half the length and half the width of a full brick, is known as
Queen closer
Bevelled closer
King closer
Half king closer
The foundations are placed below ground level, to increase
Strength
Workability
Stability of structure
All the above
In flat roof of reinforced cement concrete, the recommended angle of slope, is
Zero
A few degrees
10°
200°
A solid core of rock is formed inside the cylinder in the case of
Auger boring
Percussion drilling
Diamond drilling
Wash boring
You are asked to design and supervise a truss for a factory to have spans 6 m to 9 m. The type of the truss you will use, is
Mansard truss
Queen post truss
King post truss
Collar truss
The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to
10 mm
20 mm
30 mm
40 mm
In horizontal D.P.C, thickness of cement concrete (1 : 2 : 4) is
2 cm
4 cm
6 cm
8 cm
The important test to be conducted on a stone used in docks and harbours is
Hardness test
Workability test
Weight test
Toughness test
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
Dampness causes
Efflorescence
Bleaching of paints
Crumbling of plaster
Growth of termites
A wooden block hinged on post outside a door, is known
Cleat
Stop
Horn
None of these
While investigating the site, a thick layer of fairly firm clay over a deep layer of soft clay is encountered. In such a situation, the following type of foundation is useful:
Pile formation
Raft foundation
Grillage foundation
None of these
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)
For constructing a terrazzo floor, Pick up the incorrect statement from the following:
A base course is prepared as in cement concrete flooring
A 32 mm thick layer of cement concrete (1 : 2 : 4) is laid on the base course and the surface is made smooth by trowelling
Glass strips are driven into the layer according to the pattern required
After final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
As compared to stretcher course, the thickness of joints in header course should be
Less
More
Equal
Equal or more
The bearing capacity of a water logged soil can be improved by
Compacting the soil
Draining the soil
Increasing the depth of foundation
Grouting
For the construction of flyovers in sandy soils, the type of foundation provided, is
Strap footing
Raft footing
Combined footing
Pier footing
The strength of brick masonry in 1:6 cement mortar, is
20 tonnes/m2
40 tonnes/m2
50 tonnes/m2
60 tonnes/m2