This set of Construction and Building Materials Multiple Choice Questions & Answers (MCQs) focuses on “Dressing of Stone Surfaces”.
1. Identify the dressing of stone surface.
a) Quarry-faced finish
b) Scabbling finish
c) Hammer-dressed finish
d) Axed finish
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Explanation: In Hammer-dressed finish, the stones are made roughly square or rectangular by means of a Waller’s hammer as shown in the given figure above. The Hammer-dressed Stones have no sharp or irregular corners and have comparatively even surface so as to fit well in the masonry.
2. Identify the dressing of stone surface.
a) Furrowed finish
b) Reticulated finish
c) Vermiculated finish
d) Droved finish
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Explanation: In Furrowed finish, a margin of about 20 mm width, is sunk on all the edges of the stone and the central position is made to project about 15 mm. A number of vertical or horizontal grooves about 10 mm wide are formed in this projected position. This finish is generally adopted to make the quoins prominent.
3. Identify the dressing finish of stone surface.
a) Dragged finish
b) Sunk finish
c) Circular finish
d) Tooled finish
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Explanation: In Tooled finish, the stone surface is finished by means of a chisel and parallel continuous mark, either horizontal or vertical on inclined, are left on the surface.
4. Identify the dressing finish of stone surface.
a) Vermiculated finish
b) Reticulated finish
c) Boasted finish
d) Rubbed finish
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Explanation: In Boasted finish, the Boaster is used to make non continuous parallel marks on the stone surface. The marks maybe horizontal, vertical or inclined. A Boaster is a chisel having an edge of width about 60 mm.
5. Identify the dressing finish of stone surface.
a) Polished finish
b) Dragged finish
c) Circular finish
d) Rubbed finish
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Explanation: In Dragged or Combed finish, a Drag or a comb, which is a piece of Steel with a number of teeth, is rubbed on the surface in all directions. This finish is suitable for soft stones only.
6. Identify the dressing finish of stone surface.
a) Reticulated finish
b) Vermiculated finish
c) Boasted finish
d) Plain finish
View Answer
Explanation: Reticulated finish represents a neat appearance. A margin, about 20 mm wide, is marked on the edges of the stone and irregular sinking are made on the enclosed space. A pointed tool is used to put the marks on the sunk surface so as to present a pock-marked appearance.
7. Some stones, has obtained from the quarry, possess a smooth surface and hence such a stone surface is termed as the __________
a) Scabbling finish
b) Self-faced finish
c) Axed finish
d) Punched finish
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Explanation: Self-faced or Rock-faced or Quarry-faced finished stones can be directly placed on the work from the quarry. Whereas, in Scabbling finish, the irregular projections are removed by a scabbling hammer and in this way the stones are roughly dressed.
8. The finished surface obtained from the moulded stones are known as ________
a) Circular finish
b) Polished finish
c) Moulded finish
d) Rubbed finish
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Explanation: The surface of the stone can be moulded in any desired shape so as to improve the appearance of the work. The mouldings can be made either by hand or machine.
9. ___________ finish is obtained by sinking the surface below the original level in the form of white grooves, chamfers, inclined surfaces, etc.
a) Vermiculated finish
b) Droved finish
c) Boasted finish
d) Sunk finish
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Explanation: Vermiculated finish is just similar to the reticulated type accept that the sinking or more. The finish presents a worm eaten appearance.
10. In _______ type of finish, the surface of the stone is made approximately smooth with the saw or with a chisel.
a) Chisel-draughted margins
b) Sunk finish
c) Polished finish
d) Plain finish
View Answer
Explanation: Whereas, in polished finish, the surface of stone such as Marbles, granites, etc. can be polished either by hand or with machine. All these factors are to be careful examined before recommending a particular type of finish for the stone work.
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