Couple roof is used for spans
3.5 m or less
3.5 m but less than 5 m
5 m but less than 6.5 m
6.5 m but less than 8 m
Correct Answer :
A. 3.5 m or less
Related Questions
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 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
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
The form work from the sides of beams can be removed only after
1 day
4 days
7 days
14 days
The stone whose crushing strength is least, is
Granite
Chalk
Marble
Slate
The vertical distance between the springing line and highest point of the inner curve of an arch is known as
Intrados
Rise
Spandril
Extrados
The arrangement of supporting an existing structure by providing supports underneath, is known as
Shoring
Underpinning
Jacking
Piling
The number of steps in a flight generally should not be less than
2
3
5
No limit
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
Stud(s) of a common wooden partition
Are vertical wooden members
Is the upper horizontal wooden member
Is the lower horizontal wooden member
Are the intermediate horizontal wooden members
The window which is provided in flat roof of a room, is known
Dormer window
Lantern window
Louvered window
Sky window
The maximum number of steps in a flight should generally be restricted to
10
12
15
No limit
The member which is placed horizontally to support common rafter of a sloping roof, is
Purlin
Cleat
Batten
Strut
Single Flemish bond consists of
Double Flemish bond facing and English bond backing in each course
English bond facing and double Flemish bond backing in each course
Stretcher bond facing and double Flemish bond backing in each course
Double Flemish bond facing and header bond backing in each course
The vertical members fixed between steps and hand rail, are known
Balusters
Strings
Newel posts
Soffits
Pile foundation is generally provided if soil is
Compressible
Water logged
Made up
All the above
The portion of a brick cut across the width, is called
Closer
Half brick
Bed
Bat
The method of moving each brick through a small horizontal distance before it is finally laid in any brick wall and pressing it by means of brick hammer, is known as
Trowelling
Laying
Grouting
Placing
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
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)
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 %
The horizontal timber piece provided at the apex of a roof truss which supports the common rafter is called
Ridge board
Hip rafter
Eaves board
Valley rafter
Sum of tread and rise must lie between
300 to 350 mm
400 to 450 mm
500 to 550 mm
600 to 650 mm
To obtain good bonding in brick masonry
First class bricks are used
Vertical joints in alternate courses are kept in plumb line
Bats are used where necessary
All the above
In a colar beam roof
There is no horizontal tie beam
There is a horizontal tie at the feet of rafters only
There is a horizontal tie at almost the middle of rafters only
There are two horizontal ties, one at the feet and other at the middle of the rafters
While designing a stair, the product of rise and going is approximately kept equal to
350
420
450
500
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:
Cavity of a cavity wall should start near ground level
Cavity of a cavity wall should terminate near eaves level of sloping roof
Cavity of a cavity wall should terminate near coping of flat roof with parapet wall
All the above
The stone blocks approximately triangular in shape, used as steps, are known
Stone steps
Built up steps
Spandril steps
None of these
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