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ESE 2021 Technical Quiz || Structural Fasteners

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Question 1

Statement (I): The permissible stresses in steel are increased by 331/3 percent when the effect of wind or seismic load is taken into account.

Statement (II): The permissible stress in bolts are increased by 662/3 percent when the effect of wind or seismic load is taken into account.

Question 2

An angle ISA is connected to a gusset plate 5 mm thick, with 16 mm bolts. What is the bearing strength of the bolt when the hole diameter is 16 mm and the allowable bearing stress is 250 MPa?

Question 3

A mild steel flat subjected to a tensile force of 840 kN is connected to a gusset plate using rivets. If the permissible forces required per pitch length
1) to shear a single rivet.
2) to crush the rivet and
3) to tear the palte are 50 kN, 80 kN and 60 kN respectively, then the number of rivets required is

Question 4

Math List-I and List-II and choose the correct option using the codes given below

List – I (Definition)

P. Failure governed by yielding

Q. Failure governed by ultimate stress

R. Failure governed by buckling

List-II (Partial factor of safety as per IS 800 : 2007)

1) 1.10

2) 1.25

3) 1.50

Question 5

Given below is fillet weld subjected to direct load and bending moment.

Size of fillet weld = 6 mm

Use steel of grade 410 and shop welding

As per IS 800: 2007, the equivalent stress in MPa will be.

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Jul 8ESE & GATE CE