HW 10: Group of Bolt Joints - Problem 4 (Problems 8-34) The figure illustrates the non-
permanent connection of a steel cylinder head to a grade 30 cast- iron pressure vessel using N
bolts. A confined gasket seal has an effective sealing diameter D. The cylinder stores gas at a
maximum pressure $p_g$. For the specifications given in the table for the specific problem assigned,
select a suitable bolt length from the preferred sizes in Table A-17, then determine the yielding
factor of safety $n_p$, the load factor $n_L$, and the joint separation factor $n_o$.
Problems 8-33 to 8-36
Problem Number
8-33
8-34
8-35
8-36
A
20 mm
$\frac{1}{4}$ in
20 mm
$\frac{1}{4}$ in
B
20 mm
$\frac{1}{4}$ in
25 mm
$\frac{1}{4}$ in
C
100 mm
3.5 in
0.8 m
3.25 in
D
150 mm
4.25 in
0.9 m
3.5 in
E
200 mm
6 in
1.0 m
5.5 in
F
300 mm
8 in
1.1 m
7 in
N
10
10
36
8
$p_g$
6 MPa
1500 psi
550 kPa
1200 psi
Bolt grade
ISO 9.8
SAE 5
ISO 10.9
SAE 8
Bolt spec.
M12 \times 1.75
$\frac{1}{4}$in-13
M10 \times 1.5
$\frac{1}{4}$in-14
