Building Construction

221. The stone masonry of finely dressed stones laid in cement or lime, is

1. Random rubble masonry
2. Coursed rubble masonry
3. Dry rubble masonry
4. Ashlar masonry

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222. The stone whose crushing strength is least, is

1. Granite
2. Chalk
3. Marble
4. Slate

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223. The stone whose crushing strength is maximum, is

1. Granite
2. Chalk
3. Slate
4. Sand stone

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224. The strength of brick masonry in 1:6 cement mortar, is

1. 20 tonnes/m²
2. 40 tonnes/m²
3. 50 tonnes/m²
4. 60 tonnes/m²

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225. The taper of precast concrete pile should not be more than

1. 1 cm per metre length
2. 2 cm per metre length
3. 4 cm per metre length
4. 5 cm per metre length

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226. The term string is used for

1. The underside of a stair
2. Outer projecting edge of a tread
3. A sloping member which supports the steps in a stair
4. A vertical member between two treads

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227. The thickness of a reinforced brick partition wall, is generally kept

1. 5 cm
2. 10 cm
3. 15 cm
4. 20 cm

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228. The triangular portion between any two adjacent arches and the tangent to their crowns, is

1. Haunch
2. Spandril
3. Soffit
4. Rise

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229. The triangular space formed between the extrados and the horizontal line drawn through the crown of an arch is known as

1. Haunch
2. Spandril
3. Voussoirs
4. Skewbacks

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230. The type of arch generally constructed over a wooden lintel or over a flat arch for the purpose of carrying the load of the wall above is

1. Segmental arch
2. Pointed arch
3. Relieving arch
4. Flat arch

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