Pick up the correct statement from the following:
Dead load includes self-weight of the structure and super-imposed loads permanently attached to the structure
Dead loads change their positions and vary in magnitude
Dead loads are known in the beginning of the design
None of these
Correct Answer :
A. Dead load includes self-weight of the structure and super-imposed loads permanently attached to the structure
Related Questions
The diameter of a bolt hole is taken as the nominal diameter of the bolt plus
1.0 mm
1.2 mm
1.4 mm
1.6 mm
Diameter of a bolt hole is usually taken as
Gross diameter of bolt
Nominal diameter + 1.5 mm
Nominal diameter + 2.0 mm
Nominal diameter of bolt
Minimum pitch of the rivets shall not be less than
1.5 d
2.0 d
2.5 d
3.0 d Where d is gross diameter of rivet
If P is the wind pressure in kg/cm2, v is the velocity in km/hour and K is a constant of proportionality, then
P = K/v2
v = K/P2
P = Kv2
P = Kv
Perforated cover plates are particularly suitable for built up sections consisting of
Channels placed back to back
Channels placed toe to toe
Four angle box section
All the above
The critical load for a column of length I hinged at both ends and having flexural rigidity El, is given by
Pc = π²EI/l²
Pc = πEI/l²
Pc = πEI/I²
None of these
Which of the following sections should preferably be used at places where torsion occurs?
Angle section
Channel section
Box type section
Any of the above
The slenderness ratio of a column supported throughout its length by a masonry wall is
Zero
10
100
Infinity
For simply supported beams, the maximum permitted deflection, is
1/325 of the span
1/350 of the span
1/375 of the span
1/400 of the span
In case of timber structures, the simple bending formula M = fz may be applied for
Rectangular beams up to 300 mm depth
All rectangular beams
Solid circular beams only
All square cross-section beams
For the steel member exposed to weather and accessible for repainting, the thickness of steel should not be less than (accepting the webs of Indian Standard rolled steel joists and channels).
4 mm
6 mm
8 mm
10 mm
Pick up the correct statement from the following:
Loaded columns are supported on column bases
Column bases transmit the column load to the concrete foundation
Column load is spread over a large area on concrete
All the above
Bulb angles are used in
Column building
Bridge building
Ship building
Water tank building
Tacking rivets in tension members, are provided at a pitch in line not exceeding
25 cm
50 cm
75 cm
100 cm
Efficiency of a riveted joint is defined as the ratio of
Least strength of a riveted joint to the strength of solid plate
Greatest strength of a riveted joint to the strength of solid plate
Least strength of a riveted plate to the greatest strength of the riveted joint
All the above
The deflection of beams may be decreased by
Increasing the depth of beam
Increasing the span
Decreasing the depth of beam
Increasing the width of beam
The ratio of shearing stress to shearing strain within elastic limit, is known as
Modulus of elasticity
Shear modulus of elasticity
Bulk modulus of elasticity
Tangent modulus of elasticity
If p and d are pitch and gross diameter of rivets, the efficiency (η) of the riveted joint, is given by
η = p/p - d
η = p/p + d
η = p - d/p
η = p + d/p
The effect of racking forces is considered in the design of (i) Lateral braces (ii) Chord members The correct answer is
Only (i)
Only (ii)
Both (i) and (ii)
None of the above
The permissible stress in bending for rolled steel I-beams and channels, is
1500 kg/cm2
1575 kg/cm2
945 kg/cm2
1650 kg/cm2
The bracing provided in the plane of end posts is called
Sway bracing
Portal bracing
Top lateral bracing
Bottom lateral bracing
The effective length of a compression member of length L, held in position and restrained in direction at both ends, is
L
0.67 L
0.85 L
1.5 L
Pick up the correct statement from the following:
Dead load includes self-weight of the structure and super-imposed loads permanently attached to the structure
Dead loads change their positions and vary in magnitude
Dead loads are known in the beginning of the design
None of these
To the calculated area of cover plates of a built-up beam, an allowance for rivet holes to be added, is
10 %
13 %
15 %
18 %
In rolled steel beams, shear force is mostly resisted by
Web only
Flanges only
Web and flanges together
None of these
Design of a riveted joint, is based on the assumption:
Load is uniformly distributed among all the rivets
Shear stress on a rivet is uniformly distributed over its gross area
Bearing stress in the rivet is neglected
All the above
The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is
L
0.67 L
0.85 L
1.5 L
When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding (where t is the thickness of the outside plate).
8 t
16 t
24 t
32 t
The ratio of hydrostatic stress to the volumetric strain within the elastic range, is called
Modulus of elasticity
Shear modulus of elasticity
Bulk modulus of elasticity
All the above
Other conditions being same, the load factor in indeterminate structures is
Equal to load factor in determinate structures
More than the load factor in determinate structures
Less than the load factor in determinate structures
Unpredictable