183.  Pick up the correct statement from the following :
A. The slenderness ratio of lacing bars for compression members should not exceed 145
B. The minimum width of lacing bar connected with rivets of nominal diameter 16 mm, is kept 50 mm
C. The minimum thickness of a flat lacing bar is kept equal to one-fortieth of its length between inner end rivets
D. All the above.

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184.  Compression members composed of two channels back-to-back and separated by a small distance are connected together by riveting so that the minimum slenderness ratio of each member between the connections, does not exceed
A.40
B.50
C.60
D.70

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185. Pick up the correct statement from the following :
A. The ends of a strut, are connected together with two rivets
B. The members of strut will have at least two connections spaced equidistant in their length
C. The members when separated back-to-back, the connecting rivets should pass through solid washer or packing
D. All the above.

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186. Pick up the incorrect statement from the following :
A. The nominal diameter of a rivet is its diameter before driving
B. The gross diameter of a rivet is the diameter of rivet hole
C. The gross area of a rivet is the cross-sectional area of the rivet hole
D. The diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm

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187. The minimum pitch of rivet holes of diameter d should not be less than
A. d
B. 1.25 d
C. 1.5 d
D. 2.5 d.

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188.  The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus where t is the thickness in mm of the thinner outside plate.
A. 2 t
B. 4 t
C. 6 t
D. 8 t

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189.  Tacking rivets in compression plates not exposed to the weather, have a pitch not exceeding 300 mm or
A. 16 times the thickness of outside plate
B. 24 times the thickness of outside plate
C. 32 times the thickness of outside plate
D. 36 times the thickness of outside plate.

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