Building Construction

261. To obtain good bonding in brick masonry

1. First class bricks are used
2. Vertical joints in alternate courses are kept in plumb line
3. Bats are used where necessary
4. All the above

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262. To stagger vertical joints in successive courses of a wall, a piece of brick is generally used at the end of the course, which is known as

1. Bat
2. Header
3. Stretcher
4. Closer

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263. To support a heavy structure in sandy soil, the type of foundation generally used, is

1. Combined footing
2. Raft footing
3. Pier footing
4. Strap footing

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264. Two columns 50 cm × 50 cm and 60 cm × 60 cm carry 80 tonnes and 120 tonnes of loads respectively. The centre to centre distance between columns is 5.00 metres. The permissible bearing capacity of the soil is 20 t/m². If the footing is not to project more than 25 cm beyond the outside of the smaller column, pick up the correct design parameters of the footing from the following:

1. Distance of C.G. of the loads from the smaller column = 3.00 m
2. The length of the foundation slab = 7.00 m
3. Area of footing slab = 11.00 m2
4. All the above

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265. Under reamed piles are generally used for

1. Machine foundations
2. Factory building
3. Tall structures
4. All the above

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266. Vertical construction joints are provided where the shearing forces are minimum in the case of

1. Slabs
2. Beams
3. Girders
4. All of these

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267. Weep holes are provided in retaining and breast walls

1. To drain off the water from the filling
2. To ventilate the stone masonry
3. To add architectural beauty
4. To increase compaction of the earth retained

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268. Which of the following metal sheets is most effective in preventing dampness?

1. Copper sheets
2. Lead sheets
3. Aluminium sheets
4. All the above

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269. Which one of the following activities is not correct as applicable to brick corbels?

1. The maximum projection of the corbel should not be more than the thickness of the wall
2. The maximum projection of each corbel course should be limited to a quarter brick at a time
3. The discontinuous corbels are used to carry heavy concentrated loads
4. Stretcher bond is generally used for the construction of brick corbel

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270. Which one of the following factors is considered for the orientation of buildings?

1. The direction of the prevailing winds in the area
2. The exposure of the walls and roof of the buildings to the rays of sun
3. The extent up to which the sunrays penetrate with the verandah
4. All the above

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