In rolled steel beams, shear force is mostly resisted by
Web only
Flanges only
Web and flanges together
None of these
Correct Answer :
A. Web only
Related Questions
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
According to I.S. : 800 - 1871, lacing bars resist transverse shear equal to
1.0% of the axial load
2.0% of the axial load
2.5% of the axial load
3.0% of the axial load
The least dimension in case of a circular column of diameter D is taken as
0.5 D
0.68 D
0.88 D
D
The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to
150 t
160 t
170 t
180 t
Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between
10° to 30°
30° to 40°
40° to 70°
90°
Rolled steel angle sections are classified as
Equal angles
Unequal angles
Bulb angles
All the above
When a tension member consists of two channel sections, the allowance for rivet hole is made for two holes from
Each web
Each flange
Each web or one hole from each flange whichever is more
Each web or one hole from each flange whichever is less
The net area of round bars to resist the tension, is the area of cross section at
Mid-section
Root of the thread
Difference of (a) and (b)
None of these
The effective length of a double angle strut with angles placed back to back and connected to both the sides of a gusset plate, by not less than two rivets, is
0.5 L
0.67 L
0.85 L
2 L
Rise of a Jack arch is kept about
1/2 to 1/3 of the span
1/3 to 1/4 of the span
1/4 to 1/8 of the span
1/8 to 1/12 of the span
The allowable stress in axial tension for rolled I-sections and channels, is taken as
1420 kg/cm2
1500 kg/cm2
2125 kg/cm2
1810 kg/cm2
If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at a distance not greater than
d but not less than 0.20 d
1.25 d but not less than 0.33 d
1.5 d but not less than 0.33 d
2.0 d but not less than 0.50 d
In a truss girder of a bridge, a diagonal consists of mild steel flat 4001.S.F. and carries a pull of 80 tonnes. If the gross-diameter of the rivet is 26 mm, the number of rivets required in the splice, is
6
7
8
9
The moment of the couple set up in a section of a beam by the longitudinal compressive and tensile force, is known as
Bending moment
Moment of resistance
Flexural stress moment
None of these
The mechanism method of plastic analysis satisfies
Equilibrium and mechanism conditions
Equilibrium and plastic moment conditions
Mechanism and plastic moment conditions
Equilibrium condition only
In case of cantilever fillers, the ratio of the span L to depth d, should not exceed
4
8
12
16
With a percentage increase of carbon in steel, decreases its
Strength
Hardness
Brittleness
Ductility
Long column is one
Which is more than 3 m long
Whose lateral dimension is less than 25 cm
Which is free at its top
Which has a ratio of effective length and least lateral dimension more than 15
Maximum permissible slenderness ratio of a member normally acting as a tie in a roof truss, is
180
200
250
350
Shape factor is a property which depends
Only on the ultimate stress of the material
Only on the yield stress of the material
Only on the geometry of the section
Both on the yield stress and ultimate stress of material
The elastic strain for steel is about
1/12 of strain at the initiation of strain hardening and about 1/120 of maximum strain
1/2 of strain at the initiation of strain hardening and about 1/12 of maximum strain
1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain
1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain
If M is the moment due to a couple in a bearing plate whose width is b and allowable bending stress is P, the thickness (t) of the bending plate of the column splice, is
t = √[(b × p)/6M]
t = √[6M/(b × p)]
t = 6M/bp
t = √6M/(b × p)
The internal pressure coefficient on walls for buildings with large permeability is taken as
± 0.2
±0.5
± 0.7
0
Pick up the correct statement from the following:
Vertical stiffeners may be placed in pairs one on each side of the web
Single vertical stiffeners may be placed alternately on opposite sides of the web
Horizontal stiffeners may be placed alternately on opposite sides of the web
All the above
Tongue plates are provided in a steel girder at
The upper flange
The lower flange
The upper end of the web
The upper and lower ends of the web
If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
40 mm
60 mm
80 mm
100 mm
A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than
d/250 for structural steel
d/225 for high tensile steel
Both (c) and (b)
Neither (a) nor (b)
A steel beam supporting loads from the floor slab as well as from wall is termed as
Stringer beam
Lintel beam
Spandrel beam
Header beam
The maximum permissible slenderness ratio of compression member carrying dead and superimposed load, is
180
200
250
350
Economical depth of a plate girder corresponds to
Minimum weight
Minimum depth
Maximum weight
Minimum thickness of web