A testing specimen of a material has bulk modulus equal to Young’s Modulus, then the Poisson’s ratio has a value of
Question 2
A flat steel bar 20 mm x 8 mm is placed between two aluminum bars 20 mm x 6 mm so as to make a composite bar of square section 20 mm x 20 mm. The three bars are fastened together rigidly along the interfaces, when the temperature of each is 75 ° F, then the temperature stresses (in N/mm2) developed in steel and aluminium bars, if temperature of the whole assembly is raised to 125 °F, is [Take ES = 210 GPa, EA =70 GPa,∝S= 6.4 x 10-6 per℉,∝A= 12.8 x 10-6 per℉]
Question 3
A steel bar 2 m long, 20 mm wide and 15 mm thick is subjected to a tensile load of 30 kN. If Poisson’s ratio is 0.25 and Young’s modulus is 200 GPa, an increases in volume will be
Question 4
A simply supported beam of 4m span is carrying loads as shown in figure below
The location of point of maximum bending moment from C is
Question 5
A structural member carrying a pull of 700 kN is connected to a gusset plate using rivets of 20 mm diameter. If the pull required for shearing the rivets, to crush the rivets and to tear the plate per pitch length are 60 kN, 35 kN and 70 kN respectively, then the number of rivets required is
Question 6
A continuous beam is loaded as shown in the figure below. Assuming a plastic moment capacity equal to Mp, the minimum load at which the beam would collapse is
Question 7
Which of the following statement(s) is/are correct regarding bolted connections:
1) Maximum pitch shall not exceed 16t or 200 mm in case of compression members.
2) The gauge length should not exceed 10 + 4 t or 200 mm whichever is less.
3) Maximum edge distance to nearest line of bolts from edge of any unstiffened part should not exceed 12 te.
4) Maximum pitch of taking bolts should not exceed 1000 mm in case of tension members.
(t = thickness of thinner outer plate, )
Question 8
A double cover but riveted joint is used to connect two flat plates of 200 mm width and 14 mm thickness as shown in the figure. There are twelve power driven rivets of 20 mm diameter at a pitch of 50 mm in both directions on either side of the plate. Two cover plates of 10 mm thickness are used. The capacity of the joint in tension considering bearing and shear ONLY, with permissible bearing and shear stresses as 300 MPa and 100 MPa respectively is
Question 9
A rectangular hollow section is connected to a column by two ISA100×100×8 and transfers a load of 135 KN at an eccentricity of 200 mm as shown in figure. The angles are connected to the column by bolts of shear strength 43.5kN and tensile strength 53.4 kN.
Calculate the number of bolts that are required on each side to connect the angle to the column.
Question 10
Statement I: In an out of plane eccentrically loaded connection as shown in the figure, criticality test for axial stress in the lower bolt can be skipped.
Statement II: The lower bolt is unstressed since all compressive load is transferred through bearing.
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