Steel Strutures design 5

 81.The average shear stress on the gross-section of web (when web buckling is not a factor) should not exceed ?

• 74.5 MPa 
• 84.5 MPa 
• 94.5 MPa 
• 104.5 MPa 

82.The gross-section of the web of a beam is equal to ?

• Depth of beam / Web thickness 
• 2 x Depth of beam / Web thickness 
• Depth of beam x Web thickness 
• none of these 

83.The beams resting on purlins are known ?

• spandrel beams 
• rafters 
• trimmers 
• stringers 

84.In a grillage footing, the maximum bending moment occurs at the ?

• edge of beam 
• edge of base plate 
• centre of beam 
• none of these 

85.In a tension member, when one or more than one rivet hole is off the line, then the failure of plate depends upon ?

• diameter of rivet hole 
• pitch of rivets 
• gauge of rivets 
• all of these 

86.The Euler's formula for columns is valid for ?

• zero slenderness ratio 
• small slenderness ratio 
• large slenderness ratio 
• all of these 

87.The buckling load in a steel column is ?

• related to the length 
• directly proportional to slenderness ratio 
• inversely proportional to slendeness ratio 
• non-linearly to the slenderness ratio 

88.A column base is subjected to moment. If the intensity of bearing pressure due to axial equal to stress due to the moment, then the bearing pressure between the base and the concrete is ?

• uniform compression throughout 
• uniform tension throughout 
• zero at one end and compression at the other end 
• tension at one end and compression at the other end 

89.Which of the following is not a tension member ?

• Cable 
• Bar 
• Tie 
• Boom 

90.The net sectional area of a tension member is equal to ?

• gross-sectional area 
• gross-sectional area minus, the maximum deduction for rivet holes 
• gross-sectional area plus the maximum deduction for rivet holes 
• two times the gross-sectional area.

91.The effective length of fillet weld should not be less than ?

• the size of weld 
• two times the size of weld 
• three times the size of weld 
• four times the size of weld 

92.A steel wire when used as a tie requires ?

• no prestressing 
• nominally prestressing 
• pretensioning to its full capacity 
• prestressing to half it capacity 

93.In combined footing, the shape for the base of footing should be .......... to support two equal column loads ?

• rectangular 
• trapezoidal 
• triangular 
• circular 

94.The failure of a column depends upon ?

• weight on column 
• length of column 
• cross-sectional area of column 
• slenderness ratio of column 

95.The number of batten plates should be such that it divides the column longitudinally in atleast ............... parts ?

• two 
• three 
• four 
• five 

96.In riveted construction, effective length of lacing bars in double lacing is adopted as.......... times the length between inner end rivets ?

• 0.4 
• 0.7 
• 1.2 
• 1.8 

97.A fillet weld whose axis is at right angles to the direction of the applied load is known as ?

• side fillet weld 
• end fillet weld 
• diagonal fillet weld 
• all of these 

98.Rivet value is equal ?

• strength of a rivet in shearing 
• strength of a rivet in bearing 
• minimum of the value obtained in (a) and (b) 
• maximum of the value obtained in (a) and (b) 

99.The lateral system used in built-up columns, to carry the transverse shear force, is ?

• lacing 
• batten plates 
• perforated plates 
• any one of these 

100.Indian standards recommend that for a splice plate, rivets or bolts carrying calculated shear stress through a packing greater than 6 mm thick should be increased above the number required by normal calculations by ?

• 1.5% for each 1 mm thickness of packing 
• 2.5% for each 1 mm thickness of packing 
• 1.5% for each 2 mm thickness of packing 
• 2.5% for each 2 mm thickness of packing.