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WorksheetsDay 51-Nov 12-worksheet-Btech-Stone masonry
Total questions: 15
Worksheet time: 11mins
In coursed rubble masonry (First Sort), the maximum allowed projection of bushings is:
80 mm
40 mm
25 mm
12 mm
Random rubble masonry (First Sort) requires the mortar joint thickness not to exceed:
6 mm
12 mm
10 mm
3 mm
The joint used in weathering and cornices to divert water is:
Plugged joint
Cramped joint
Saddle joint
Tabled joint
The tool used to form fine chisel lines on stone surfaces is:
Boaster
Broad tool
Claw chisel
Drag
Flint rubble masonry uses silica nodules which are hard but brittle.
True
False
In ashlar rock-faced masonry, bushings projecting more than 100 mm are removed.
True
False
Assertion–Reason: Assertion (A): Through stones increase the longitudinal stability of stone walls. Reason (R): Through stones pass completely across the wall thickness and improve bonding. Choose the correct option.
Both A and R true and R explains A
Both A and R true but R does not explain A
A true, R false
A false, R true
Chips of stones used to fill gaps are called spalls
True
False
A projecting stone used to support beams or sheds is a (a) .
The horizontal stone course immediately below the cornice is the (a) .
The corbel provided below a gable coping is the (a) .
A finish made by sinking irregular areas in the middle with margins around is called (a) finish.
Maximum bushing projection allowed in ashlar rock-faced masonry is (a) mm.
match
Coping
Course protecting top of exposed wall
Cornice
Ornamental course near top of wall
Throating
Groove on underside to throw water clear
Blocking course
Course immediately above cornice
When the stones are used directly obtained from quarry, the masonry is called-
(a)
