This set of Construction & Building Materials Assessment Questions and Answers focuses on “Terms Used in Stone Masonry”.
1. The term ______ is used to indicate the art of building the structures in stones.
Explanation: The term Masonry is used to indicate the art of building the structures in either stones or bricks. The formal type is called the stone masonry and the latter type is called the brick masonry.
2. The horizontal course provided at suitable levels between the plinth and the cornice is termed as a ______
c) String Course
Explanation: String Course break the monotony of a plane surface and it is sometimes moulded and given architectural treatment. The string course is suitably weathered and throated so as to throw off the rain water clear of the wall surface.
3. The projecting course at ground floor level is known as _______
Explanation: Plinth is also used to indicate the height of ground floor level from ground level. The Plinth course protects the interior of a building from rain, water, frost, etc. It is sometimes moulded and give an ornamental treatment.
4. A __________ is a course of stone which is laid at the top wall so as to protect the wall from rain water.
Explanation: The course of coping is generally provided at the top of a compound wall or a parapet wall and it is suitably weathered and throated. Sometimes the term Coping is used to refer a cutting of the stone by means of feathers, plugs and wedges.
5. A _________ is a course of stone provided at the top of wall to dispose off rain water.
Explanation: Cornice is generally moulded and given an ornamental treatment. It is weathered and throated to dispose off rain water. In order to prevent the overturning of the cornice, sufficient bearing and extra weight at the top in the form of a parapet wall should be provided.
6. The term ________ is sometimes used to denote the wearing of stone surfaces by the action of weather.
Explanation: The upper surface of stones used for sill, cornice and coping is dressed in a sloping way so that the water may flow off easily. This is termed as the Weathering.
7. A _________ is a projecting stone which is usually provided to serve as support for roof truss, beam, weather shed, etc.
Explanation: The Corbel are generally moulded and give an ornamental treatment. The Corbels should extend at least two-third of their length into the wall.
8. Stones which are placed at regular interval right across the wall are known as _______
b) Through stones
Explanation: If the wall is considerably thick, two through stones with an overlap are provided. The area covered by the throw stones should be about one-fourth to one-half of the area of the wall surface.
9. The external corners angles of you wall surface are called the ______
Explanation: The Quoin stones are selected from large and sound stones and their beds are properly dressed. The stones or bricks forming the quion are known as the quoin stones or quoin bricks.
10. The sites of the opening such as doors, Windows, etc. are known as the ______ and they are constructed similar to quoins.
c) Through stones
Explanation: The Jambs maybe either plain or square or rebated. The splayed Jambs are preferred as they allow the shutters to open up at a obtuse angle and thus permit more light and air into the room.
11. The projecting course from an arch or Window head is known as a _____
b) Skew Corbel
Explanation: Label is usually moulded and is sometimes known as a drip stone. Whereas, the coping provided at the summit of a gable wall is known as an Apex or Summit stone.
12. The horizontal stones provided at the top of openings of Doors, Windows, etc. are known as the _______
Explanation: In case of Heads or Lintels, a bearing of 150 mm to 200 mm should be given on either side of the opening. Whereas, the exposed vertical surface at right angles to the door or Window frames are known as the Reveals.
Sanfoundry Global Education & Learning Series – Construction and Building Materials.
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