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Question 3 (10 marks) Find the stress at B and sketch the results on a differential element at that point. a y A 0.75 in. B 50 lb 1 in. Section a-a 60° a Z 10 in. 12 in. Question 4 (10 marks) A standpipe with an inside diameter of 108 in. contains water, which has a weight density of 62.4 lb/ft³. The column of water stands 30 ft above an outlet pipe, which has an outside diameter of 6.625 in. and an inside diameter of 6.065 in. (a) Determine the longitudinal and hoop stresses in the outlet pipe at B. (b) If the maximum hoop stress in the standpipe at point A must be limited to 2,500 psi, determine the minimum wall thickness that can be used for the standpipe. Standpipe 30 ft y A B Outlet

          Question 3 (10 marks)
Find the stress at B and sketch the results on a differential element at that point.
a
y
A
0.75 in.
B
50 lb
1 in.
Section a-a
60°
a
Z
10 in.
12 in.
Question 4 (10 marks)
A standpipe with an inside diameter of 108 in. contains water,
which has a weight density of 62.4 lb/ft³. The column of water
stands 30 ft above an outlet pipe, which has an outside diameter of
6.625 in. and an inside diameter of 6.065 in.
(a) Determine the longitudinal and hoop stresses in the outlet pipe at B.
(b) If the maximum hoop stress in the standpipe at point A must be
limited to 2,500 psi, determine the minimum wall thickness that can be
used for the standpipe.
Standpipe
30 ft
y
A
B
Outlet

Question 3 (10 marks)
Find the stress at B and sketch the results on a differential element at that point.
a
y
A
0.75 in.
B
50 lb
1 in.
Section a-a
60°
a
Z
10 in.
12 in.
Question 4 (10 marks)
A standpipe with an inside diameter of 108 in. contains water,
which has a weight density of 62.4 lb/ft³. The column of water
stands 30 ft above an outlet pipe, which has an outside diameter of
6.625 in. and an inside diameter of 6.065 in.
(a) Determine the longitudinal and hoop stresses in the outlet pipe at B.
(b) If the maximum hoop stress in the standpipe at point A must be
limited to 2,500 psi, determine the minimum wall thickness that can be
used for the standpipe.
Standpipe
30 ft
y
A
B
Outlet

Added by Juan Carlos C.

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