This set of Construction and Building Materials Multiple Choice Questions & Answers (MCQs) focuses on “Types of Arches”.
Explanation: The apparent shape of this arch is Flat and the usually skewback forms an angle of 60 degree with the horizontal as shown in the figure above. Thus an equilateral triangle is formed with one side as Intrados.
Explanation: Relieving arch is constructed over a wooden joist or a flat arch as shown in the given figure above. It relieves the joints or flat arch from carrying the load. The ends of the relieving arch should be kept sufficiently inside the solid wall.
Explanation: In Venetian arch, the depth at crown is more than that at the Springing line as shown in figure. The Venetian arch has four centres all located on the springing line.
Explanation: Florentine arch is similar to the Venetian arch accept that the Intrados has the shape of semi circular curve are shown. There are three centres for a Florentine arch, all located on the Springing line.
Explanation: Stilted arch has a semi circular shape attached at the tops of two vertical position as shown. The Springing line of arch passes through the tops of vertical position.
6. The flat, segmental, semicircular, horse-shoe and Stilted arches are _____
a) Two centred arch
b) Three centred arch
c) Five centred arch
d) One centred arch
Explanation: This type of earth has one Centre only. Sometimes the circular windows are used to have an architectural effect. For this purpose a bulls eye arch is adopted.
7. The pointed Arch of the Tudor period is an example of ______ arch.
a) Three centred arch
b) Four centred arch
c) Two centred arch
d) Five centred arch
Explanation: Tudor period arch has four centres. It consists of two different curves and has the appearance of an ellipse at the haunches. The Venetian arch provides another illustration of this type of Arch.
8. ________ type of arch is constructed from ordinary un-cut bricks.
a) Rough arch
b) Axed arch
c) Rough cut arch
d) Gauged arch
Explanation: A rough arch is used where appearance is of secondary importance or when it is intended to plaster the face of the arch. In order to prevent the thick end of mortar to become too large, such arches are constructed in rings of half bricks.
9. _____ types of arches is constructed from bricks which are cut to a wedge shaped by means of an axe.
a) Rough cut arch
b) Rough arch
c) Gauged arch
d) Cut arch
Explanation: According to class of the work, the bricks are rough axed or fine-axed. The thickness of mortar joints varies from 3 mm to 6 mm.
10. _______ type of arch is constructed from bricks which are finely cut by means of wire saw.
a) Wire cut arch
b) Gauged arch
c) Rough arch
d) Saw cut arch
Explanation: The Gauged arch is used where are fine finish of the surface is required. The surfaces of bricks are finished with file. The mortar joints are as thin as 1.50 mm to 0.75 mm.
11. __________ arches can be constructed in rubble masonry or ashlar masonry.
a) Stone arches
b) Wooden arches
c) Brick arches
d) Concrete arches
Explanation: The rubble masonry arch is comparatively weak and hence it is used for inferior type of work. The span of rubble masonry stone arches is limited to about 1 m or so.
12. _______ arches can be constructed from ordinary bricks or purpose made bricks or soft bricks.
a) Crushes arches
b) Stone arches
c) Brick arches
d) Concrete arches
Explanation: The ordinary bricks are not cut to shape of Voussoirs and hence the rough bricks arches are formed. For getting the arch curve, the joints are made wedge shaped with greater thickness at the extrados and smaller thickness at the intrados.
13. ________ arches can be constructed of the precast cement concrete blocks or Monolithic concrete.
a) Cement concrete arches
b) Cement arches
c) Concrete arches
d) Rubble arches
Explanation: In Concrete arches, the blocks are similar to stone and are prepared by Casting cement concrete in specially prepared mould. The Monolithic concrete at these are constructed from cast in situ concrete and are suitable for a big spans.
Sanfoundry Global Education & Learning Series – Construction and Building Materials.
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