Steel Structures Questions and Answers in Quiz Form 7 for Practice

91. The lightest I-section for the same depth is

1. ISMB
2. ISLB
3. ISJB
4. ISWB

92. The minimum length of butt weld shall be...............times the size of weld

1. 4
2. 5
3. 6
4. 8

93. The most economical section for a compression member is

1. rectangular
2. I-shaped
3. circular
4. hollow circular

94. The number of battens should be such that the member is divided into not less than............bays.

1. 3
2. 4
3. 5
4. 6

95. The roof covering weight including A.C. sheets, laps, connector etc. may be taken as

1. 100–125 N/m²
2. 125–150 N/m²
3. 150–170 N/m²
4. 170–200 N/m²

96. The slenderness ratio of lacing bars should not exceed

1. 105
2. 125
3. 145
4. 160

97. The successful introduction of..............bolts resulted into replacement of rivets.

1. black bolt
2. turned bolt
3. HSFG bolts
4. all of the above

98. The yield strength and ultimate strength of M20 bolts are

1. 20 N/mm² and 28 N/mm²
2. 200 N/mm² and 280 N/mm²
3. 200 N/mm² and 400 N/mm²
4. 240 N/mm² and 400 N/mm²

99. Thickness of battens shall not be less than.....................of the distance between the innermost connecting lines of bolts.

1. 30-Jan
2. Jan-40
3. Jan-50
4. Jan-60

100. To account for weight of electrical fixtures like lights and fans, on lower panel points of trusses additional occasional load to be considered is

1. 5–10 kN
2. 10–15 kN
3. 15–20 kN
4. 20–30 kN

101. To connect members subjected to dynamic loads which one of the following type of bolts is preferable?

1. black bolts
2. turned bolts
3. HSFG bolts
4. both b and c

102. Under fatigue stresses, which one of the following joint fails earlier?

1. black bolted
2. turned bolted.
3. HSFG bolted
4. welded.

103. Unit weight of G.I. sheets is

1. 65 N/m²
2. 85 N/m²
3. 105 N/m²
4. 125 N/m²

104. Weldability of steel is enhanced by alloying it with

1. carbon
2. sulphur
3. chrome
4. nickel

105. When the two columns to be spliced are of slightly different size

1. milled ends are provided
2. filler plates are used
3. bearing plates are used
4. milled end and bearing plated are used