Building Construction

31. Cast iron piles

1. Are suitable for works under sea water
2. Resist shocks or vibrations
3. Are suitable for use as batter piles
4. Are useful for heavy vertical loads

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32. Cavity wall is generally provided for

1. Heat insulation
2. Sound insulation
3. Prevention of dampness
4. All the above

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33. Couple close roof is suitable for maximum span of

1. 2.5 m
2. 3.5 m
3. 4.5 m
4. 5.5 m

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34. Couple roof is used for spans

1. 3.5 m or less
2. 3.5 m but less than 5 m
3. 5 m but less than 6.5 m
4. 6.5 m but less than 8 m

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35. Crown is located at

1. Highest point on the extrados of the arch
2. Highest point on the intrados of the arch
3. Skew-back of the arch
4. None of these

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36. Dado is usually provided in

1. Dining halls
2. Bath rooms
3. Living rooms
4. Verandah

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37. Dampness causes

1. Efflorescence
2. Bleaching of paints
3. Crumbling of plaster
4. Growth of termites

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38. Depth of lean concrete bed placed at the bottom of a wall footing, is kept

1. 10 cm
2. 15 cm
3. Equal to its projection beyond wall base
4. Less than its projection beyond wall base

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39. Depth or height of the arch is the

1. Perpendicular distance between intrados and extrados
2. Vertical distance between springing line and intrados
3. Perpendicular distance between springing line and extrados
4. None of the above

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40. During percussion drilling

1. Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole
2. Caving or mixing of strata are caused in soft soils or cohesionless soils
3. The soil to a considerable depth below the bottom of the hole gets disturbed
4. All the above

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