Steel Structures Objective Questions Answers for Practice

76. Simple post-critical method may be used for finding shear buckling resistance of web in case of plate girder

1. with vertical stiffeners only
2. with or without vertical stiffeners
3. with vertical and horizontal stiffeners.
4. without vertical stiffeners only

77. Size of rivet hole is kept...................more them size of rivet

1. 1.5 to 2 mm
2. 2–3 mm
3. 3–4.5 mm
4. 1 to 1.5 mm

78. Slenderness ratio l of a vertical stiffener in a plate girder may be taken as

1. 0.7 L/r
2. 0.75 L/r
3. L/r
4. 0.5 L/r

79. The A.C. sheets should be fastened to purlins by 8 mm hook bolts at a maximum pitch of

1. 350 mm
2. 400 mm
3. 500 mm
4. 300 mm

80. The advantage of steel structure is

1. quality is assured
2. speed of construction is high
3. all the above
4. needs less space

81. The beam sections in which the extreme fibre in compression can yield stress, but cannot develop the plastic moment of resistance, due to local buckling are classified as

1. compact sections
2. semi-compact sections
3. slender sections
4. plastic sections

82. The code does not suggests reduction factor for shear capacity in the case

1. if number of bolts exceed a specified number
2. if the grip length is large
3. if packing plate thickness exceeds 6 mm
4. if the joint is too long

83. The design strength of tension member is

1. rupture strength of section
2. block shear strength
3. lowest of the above
4. design strength of gross section due to yielding

84. The effective diameter of a rivet is taken as

1. rivet hole diameter
2. rivet hole diameter +1.5 mm
3. rivet hole diameter –1.5 mm
4. nominal diameter of rivet

85. The effective slenderness ratio of battened columns shall be taken as.................times the maximum slenderness ratio of the column

1. 1.1
2. 1.15
3. 1.2
4. 1.05

86. The effective slenderness ratio of laced columns shall be taken as............times the actual maximum slenderness ratio, in order to account for shear deformation effect.

1. 1.1
2. 1.15
3. 1.2
4. 1.05

87. The following are the statements about tension field method of finding shear buckling resistance of plate girded: which one of them is correct statement?

1. As the web begins to buckle, it loses the ability to resist diagonal compression.
2. It gives higher value of shear buckling strength of web compared to simple post-critical method.
3. All the above.
4. It may be used if end and intermediate vertical stiffeners are provided.

88. The following types of bolts may be classified as bearing types bolts

1. turned bolt
2. HSFG bolt
3. both black and turned bolt
4. black bolt

89. The heaviest I-section for the same depth is

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

90. The length of the weld connecting batten plate to the member shall not be less than.............the depth of batten plate.

1. 2-Jan
2. 4-Mar
3. 1
4. 3-Jan