1.
When reroofing over asphalt shingles, nails should be inches long.
A
3
B
1
C
1.5
D
2
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When reroofing over asphalt shingles, nails should be inches long.
3
1
1.5
2
The exposure required for a 24 inch slate using a 5:12 installation is how many inches?
7
8
10
12
Roof slopes of less than 6 in 12 use
8 foot battens with drain slots every 4 feet
4 foot double battens with drain slots every 4 feet
8 foot battens with 1/2 inch drain slots
4 foot battens with 1/2 inch drain slots between ends
On a new slate roof, nails should be how many inch/es longer than twice the thickness of the slate?
2
1
1.5
0.5
On a new shingle roof, nails should be inches long.
2
1
1.5
2.5
Lightweight insulated concrete roof decks must have a minimum thickness of inches.
1
2
3
4
Ceramic mold are used due to high temperature resistance
true statement
false statement
1
In a centrifugal pump casing, the flow of water leaving the
vortex
tangential
radial
centrifugal
Which one of the following is not a permanent drainage work
providing longitudinal drains
concrete lining
grouting with cement chemicals
pumping water
Which one of the following is not a method of tunnelling in running ground?
Flying arch method
Liner plate method
Top heading and benching method
Needle beam method
Which one of the following is not a method of tunnelling in firm soft strata?
Full face method
Top heading and benching
Drift method
Needle beam method
Which one of the following is not a method of supporting roof and sides in multiple drift method of tunnelling?
German method
Austrian method
Japanese method
Belgium method
Which one of the following is not a drilling pattern adopted in tunnelling?
V-cut
Cylinder cut
Vertical wedge cut
Fan cut
The method of lining in tunnels is
brick masonry lining
stone masonry lining
concrete lining
all the above
The method in which roof arch is completed before excavating a trench for laying muck track is known as
American method
English method
Belgium method
Austrian method
The method employing steel lined plates and air compressors for driving them is known as
needle beam method
tunnelling with liner plates
shield method
none of the above
The length of the first tunnel built in the world of Babylon in the year 2000 BC was
300 m
500 m
700 m
900 m
The explosive used in tunnelling is
blastic gelatine
semi-gelatine
ammonia dynamite
any one of the above
The explosive recommended for blasting a soft rock is
blasting gelatine
special gelatine 9 to 40%
ammonia dynamite
semi-gelatine
The drilling pattern in which 3 to 4 converging holes are so directed that they meet at point further is known as
fan cut
pyramid cut
V-cut
burn cut