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Civil Engineering Objective Questions { Building Construction }



29. For one cubic metre of brick masonry, number of bricks required is
A.400
B.425
C.450
D.500
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30. The minimum compressive strength of Ilnd class bricks should be
A. 75 kg/cm2
B. 90 kg/cm2
C. 100 kg/cm2
D. 120 kg/cm2
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31. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
A.10%
B.15%
C.20%
D.25%
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32. The main ingredient of a good quality brick earth, is
A. magnesia
B. lim
C. silica
D. alumina.
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33. Clay and silt content in a good brick earth must be at least
A.50%
B.40%
C.30%
D.25%
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34. A bull nose brick is not used for
A. rounding off sharp corners
B. pillars
C. decoration purpose
D. arches.
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35. Second class bricks
A. are of dark brown colour
B. produce a metallic sound when struck
C. are well burnt
D. are under burnt.
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