Related Questions
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4
The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus (where t is the thickness in mm of the thinner outside plate).
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4
For a column of height L fixed in position and direction both at its top and bottom, its effective length, is
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4
If a pair of angles placed back to back in tension are connected by one leg of each angle, the net effective area of the section, is
A. a - [b/{1 + 0.35 (b/a)}]
B. a + [b/{1 + 0.35 (b/a)}]
C. a - [b/{1 + 0.2 (b/a)}]
D. a + [b/{1 + 0.2 (b/a)}]
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4
If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than
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4
In double lacing, the thickness t of flat lacing is
A. t < 1/40 th length between inner end rivets
B. t < 1/50 th length between inner end rivets
C. t < 1/60 th length between inner end rivets
D. t < 1/70 th length between inner end rivets
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4
The rivets which are heated and then driven in the field, are known
A. Power driven shop rivets
B. Power driven field rivets
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If f is the maximum allowable bending stress in a tension member whose radius of gyration is r and depth is 2y, the required cross sectional area A is given by
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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
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The most economical section for a column, is
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When the length of a tension member is too long
D. A single angle is used
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4
The shape factor of an isosceles triangle for bending about the axis parallel to the base is:
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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
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If the thickness of plate to be connected by a rivet is 16 mm, then suitable size of rivet as per Unwin's formula will be
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4
If the depth of the section of an upper column is smaller than the lower column
A. Filler plates are provided with column splice
B. Bearing plates are provided with column splice
C. Filler plates and bearing plates are provided with column splice
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4
Steel tanks are mainly designed for
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Net sectional area of a tension member, is equal to its gross section area
A. Plus the area of the rivet holes
B. Divided by the area of rivet holes
C. Multiplied by the area of the rivet holes
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4
In case horizontal stiffeners are not used, the distance between vertical legs of flange angles at the top and bottom of a plate girder, is known as
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The strength of ISA 125 = 75 × 10 mm used as a tie member with its longer leg connected at the ends by 27 mm diameter rivets, is
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4
Pick up the correct statement from the following:
A. Tacking rivets are used if the minimum distance between centres of two adjacent rivets exceeds 12 t or 200 mm, whichever is less
B. Tacking rivets are not considered to calculate stress
C. Tacking rivets are provided throughout the length of a compression member composed of two components back to back
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4
The basic wind speed is specified at a height 'h' above mean ground level in an open terrain. The value of 'h' is
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The effective length L of a simply supported beam with ends restrained against torsion, and also the ends of compression flange partially restrained against lateral bending, is given by
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4
The allowable tensile stress in structural mild steel plates for steel tank is assumed as
C. 105.5 MPa on gross area
D. 150.0 MPa on gross area
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According to the Unwin's formula, if t is thickness of the plate in mm, the nominal diameter of the rivet, is
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The main assumption of the method of simple design of steel frame work, is:
A. Beams are simply supported
B. All connections of beams, girders and trusses are virtually flexible
C. Members in compression are subjected to forces applied at appropriate eccentricities
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4
Working shear stress on the gross area of a rivet as recommended by Indian Standards, is
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If d is the distance between the flange angles, the vertical stiffeners in plate girders without horizontal stiffeners, are spaced at a distance not less than
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For a rectangular section, the ratio of the maximum and average shear stresses, is
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The bracing between two columns of a steel tank will be designed to resist
A. Horizontal shear due to wind or earthquake only
B. Horizontal, shear due to wind or earthquake + 2.5% of column loads
C. Column loads + 2.5% of horizontal shear due to wind or earthquake
D. Column loads + full horizontal shear due to wind or earthquake
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The slenderness ratio of lacing bars should not exceed
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The strength of a riveted lap joint is equal to its
D. Least of (a), (b) and (c)