The disease of dry rot in timber is caused by
Lack of ventilation
Alternate wet and dry conditions
Complete submergence in water
None of the above
Correct Answer :
A. Lack of ventilation
Related Questions
As compared to stretcher course, the thickness of joints in header course should be
Less
More
Equal
Equal or more
In case of foundations on black cotton soils, the most suitable method to increase the bearing capacity of soils is to
Increase the depth of foundation
Drain the soil
Compact the soil
Replace the poor soil
The process of filling hollow spaces of walls before plastering, is known
Hacking
Dubbing out
Blistering
Peeling
Raft foundation are generally preferred to when the area required for individual footing, is more than
25% to total area
30% of total area
40% to total area
50% of total area
Pick up the correct specification of one-room quarters generally adopted from the following:
Six quarters in a row
The size of room is either 3.5 m × 3 m or 4.2 m × 2.5 m
The front verandah is kept 2 m wide
All the above
The X-ray rooms are plastered with
Plaster of Paris
Barium plaster
Martin's cement
Keen's cement
The strength of brick masonry in 1:6 cement mortar, is
20 tonnes/m2
40 tonnes/m2
50 tonnes/m2
60 tonnes/m2
Under reamed piles are generally used for
Machine foundations
Factory building
Tall structures
All the above
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
The type of roof which slopes in two directions with a break in the slope on each side is known as
Gable roof
Hip roof
Gambrel roof
Mansard roof
The window which projects outside a room of a building for admitting more light and air, is known
Bay window
Casement window
Lantern window
Dormer window
The minimum distance between the centres of bulb of diameter du, of a multi under reamed piles, is
du
1.25 du
1.5 du
1.75 du
The Auger borings are not common
In soils that require lateral support
In cohesive soils
In soft soils
None of the above
The maximum bearing capacity of soil is that of
Black cotton soil
Loose fine sandy soil
Dry coarse sandy soil
Hard rocks
In high mountainous region, the type of roof generally recommended for buildings, is
Shed type
Gable type
Gambrel type
Mansard type
A covering of concrete placed on the exposed top of an external wall, is known as
Cornice
Coping
Frieze
Lintel
Pick up the incorrect statement from the following:
The width of the wall is constructed thicker at the base in a stepped fashion
A long vertical load transferring concrete structure is called a concrete pile
In pile which transfers the load to the soil by the friction between the pile and the surrounding soil is called friction pile
The pile which transfers the load to a hard rock bed at certain depth is called load bearing
The projections of head or sill of a door or window frame are
Transoms
Horns
Stops
Chocks
The radial splits which are wider on the outside of the log and narrower towards the pith are known as
Heart shakes
Cupshakes
Starshakes
Rindgalls
The differential settlement in case of foundations on sandy soils should not exceed
25 mm
40 mm
65 mm
100 mm
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
The stone masonry of finely dressed stones laid in cement or lime, is
Random rubble masonry
Coursed rubble masonry
Dry rubble masonry
Ashlar masonry
Which one of the following rocks is used for monumental buildings?
Granite
Marble
Sand stone
Slate
A floor constructed with 3 mm marble chips, is known
Mosaic floor
Terrazzo floor
Chips floor
Marble floor
For different layers of cement concrete floor. Pick up the incorrect statement from the following:
The lowest layer consists of consolidated ground
A 10 cm thick clean sand is laid on consolidated ground
A 10 cm lime concrete (1 : 4 : 8) is laid on clean sand
A 10 cm thick cement concrete (1 : 2 : 4) is laid on top layer
Pick up the correct statement from the following:
A combined footing is so proportioned that centre of gravity of supporting area coincides with centre of gravity of two column loads
A combined footing may be either rectangular or trapezoidal in shape
Trapezoidal shaped footings may be provided under any loading
All the above
The dimensions of a half queen closer, are
9 cm × 9 cm × 9 cm
9 cm × 9 cm × 4.5 cm
9 cm × 4.5 cm × 9 cm
1.8 cm × 4.5 cm × 9 cm
Crown is located at
Highest point on the extrados of the arch
Highest point on the intrados of the arch
Skew-back of the arch
None of these
In case of multi-storeyed buildings, the forms to be removed first are
Sides of beams and girders
Column forms
Bottom of beams and girders
All the above at the same time
Pick up the incorrect statement from the following:
In king post truss, one vertical post is used
In a queen post truss, one vertical post is used
In a queen post truss, two vertical posts are used
None of these