61.
In the design of hands operated gantry girders, the impact factor for vertical loads to be considered is
A
10%
B
15%
C
20%
D
25%
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In the design of hands operated gantry girders, the impact factor for vertical loads to be considered is
10%
15%
20%
25%
In the design of gantry girders impact factor for vertical loads for electrically operated cranes is taken as
10%
15%
20%
25%
In the design of a connection of tension member to a gusset plate, the principle to be followed is
section should be compact
as large portion of it as is possible is connected
centre of gravity of member should be through the middle of thickness of gusset plate
all the above
In showing welded connection the length of the weld shown should be
effective length only
effective length + size of weld
effective length + 2 × size of weld
effective length + 4 × size of weld
In roof trusses bracings should be provided at top chord level in the
end panels using flats
end panels using angles
last but one panel using flats
last but one end panel using angles
In roof trusses bracings should be provided at bottom chord level in the
end panels using flats
end panels using angles
last but one panel using flats
last but one panel using angles
In lap joints with welding, lap should not be less than
4 × t or 40 mm
5 t or 50 mm
6 t or 60 mm
100 mm
In double angle tension member of a truss tacking bolts are provided at a distance not exceeding
600 mm
800 mm
1000 mm
1200 mm
In designing gantry girders impact factor for horizontal force along rails is taken as
5%
10%
15%
25%
In designing connection between web plate and flange plate, shear stress is calculated using moment of inertia of
web plate only
web plate and flange plates
half the web plate and a flange plate
one flange plate only
In case of planed edges, minimum edge distance shall not be less than................times bolt hole diameter.
1.25
1.5
1.75
2
In case of bolted lacing, the width of lacing bars shall be.............times the nominal diameter of the bolt.
2
3
4
6
In A.C. sheet roofing, if slope is more than 20°, end lap should be at least
100 mm
125 mm
150 mm
175 mm
In A.C. sheet roofing, if slope is less than 20°, end lap should be at least
125 mm
150 mm
175 mm
200 mm
In A.C. sheet roofing side lap should be at least
1 corrugation
1.5 corrugation
2 corrugation
more than 2 corrugations
In a roof truss a member normally acting as tension member but occasionally subjected to compression due to wind load, slenderness ratio should not exceed
150
250
350
450
In a plate girder, if two horizontal stiffeners are to be used they should be at depth...........from compression flange.
0.2 d and 0.4 d
0.2 d and 0.5 d
0.33 d and 0.67 d
0.4 d and 0.8 d
In a plate girder of depth d, if one horizontal stiffener is to be provided, it should be at...............below compression flange.
0.2 d
0.25 d
0.3 d
0.5 d
In a compression member of a truss, consisting of double angle, tacking bolts should be provided at a distance not more than
600 mm
800 mm
1000 mm
1200 mm
In a column splice, if ends are milled, the connection and splice plates may be designed for only..............percent of axial load.
50
60
70
80