search
arrow-left Previous
Next arrow-right
Q: In which of the following stone masonries are the joints bevelled at a 45º angle to a depth of 25 mm rough tooled and will have chisel dressing 2.5 mm wide all-round the edges?
  • A. Rubble stone masonry
  • B. Plain ashlar masonry
  • C. Chamfered ashlar masonry
  • D. Coursed stone masonry
Correct Answer: Option C - Types of stone masonry– Rubble stone masonry– Blocks of stones that are used either undressed or comparatively roughly dressed. Chamfered ashlar masonry– It is a special form of rock faced ashlar masonry in which the strip provided around the perimeter of the exposed face is chamfered or beveled at an angle of 450 employing a chisel to a depth of 25 mm. Plain ashlar masonry– It is rough tooled ashlar masonry will have a chisel dressing 2.5 mm wide all around the edges and shall be roughly tooled between the drafts. Coursed Rubble Masonry– In this case, no portion of the dressed surface should be more than 10 mm from straight edge placed on it.
C. Types of stone masonry– Rubble stone masonry– Blocks of stones that are used either undressed or comparatively roughly dressed. Chamfered ashlar masonry– It is a special form of rock faced ashlar masonry in which the strip provided around the perimeter of the exposed face is chamfered or beveled at an angle of 450 employing a chisel to a depth of 25 mm. Plain ashlar masonry– It is rough tooled ashlar masonry will have a chisel dressing 2.5 mm wide all around the edges and shall be roughly tooled between the drafts. Coursed Rubble Masonry– In this case, no portion of the dressed surface should be more than 10 mm from straight edge placed on it.

Explanations:

Types of stone masonry– Rubble stone masonry– Blocks of stones that are used either undressed or comparatively roughly dressed. Chamfered ashlar masonry– It is a special form of rock faced ashlar masonry in which the strip provided around the perimeter of the exposed face is chamfered or beveled at an angle of 450 employing a chisel to a depth of 25 mm. Plain ashlar masonry– It is rough tooled ashlar masonry will have a chisel dressing 2.5 mm wide all around the edges and shall be roughly tooled between the drafts. Coursed Rubble Masonry– In this case, no portion of the dressed surface should be more than 10 mm from straight edge placed on it.