31. The type of roof suitable in plains where rainfall is meagre and temperature is high is
32. During percussion drilling
33. The X-ray rooms are plastered with
34. The process of making the back ground rough, before plastering, is
35. The construction joints in buildings are provided after
36. In case of multi-storeyed buildings, the forms to be removed first are
37. A concrete structure is set on fire and the temperature raises to 1000°C. The strength of concrete as compared to original strength reduces to
38. The piece of a brick cut with its one corner equivalent to half the length and half the width of a full brick, is known as
39. The arrangement made to support an unsafe structure temporarily, is known as
40. The steel pile which is generally sunk in soft clay or loose sand of low bearing capacity, is
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