B.L (D) 2PIES-38. ANS. (C) IES-39. THE FOLLOWING TWO FIGURES SHOW WE...
2.B.L
(d)
2P
IES-38. Ans. (c)
IES-39.
The following two figures show welded joints (x x x x x indicates welds),
for the same load and same dimensions of plate and weld. [IES-1994]
The joint shown in
(a) fig. I is better because the weld is in shear and the principal stress in the weld is
not in line with P
(b) fig. I is better because the load transfer from the tie bar to the plate is not direct
(c) fig. II is better because the weld is in tension and safe stress of weld in tension is
greater than that in shear
(d) fig. II is better because it has less stress concentration.
IES-39. Ans. (c) Figure II is better because the weld is in tension and safe stress of weld in
tension is greater than shear.
IES-40
.
Assertion (A): In design of double fillet welding of unsymmetrical sections with
plates subjected to axial loads lengths of parallel welds are made unequal.
Reason (R): The lengths of parallel welds in fillet welding of an unsymmetrical
section with a plate are so proportioned that the sum of the resisting moments of
welds about the centre of gravity axis is zero.
[IES-2008]
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
IES-40. Ans. (a) Axially loaded unsymmetrical welded joints
Design of Joint
S K Mondal’s
Chapter 1
P
τ =
1
A
P
A
= τ
1
1
= τ × ×
P
t I
2
2
=
P y
P y
1 1
2 2
tI y
tI y
τ
= τ
I y
I y
IES-41. Two plates are joined together by means of
single transverse and double parallel fillet
welds as shown in figure given above. If the size
of fillet is 5 mm and allowable shear load per
mm is 300 N, what is the approximate length of
each parallel fillet?
(a) 150 mm
(b) 200 mm
(c) 250 mm
(d) 300 mm
[IES-2005]
IES-41. Ans. (b)
300
×
(
100 2l
+
)
=
15000 or l 200
=
IES-42.
A circular rod of diameter d is welded to a flat plate along its
circumference by fillet weld of thickness t. Assuming τ
w
as the allowable
shear stress for the weld material, what is the value of the safe torque that
can be transmitted?
[IES-2004]
π
τ
π
τ
(d)
d
2
.t.
w
π
τ
(c)
d
2
.t.
w