The figure illustrates the 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 pg. 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 np, the load factor nL, and the joint separation factor n0.

A ............. 20 mm
B ............. 25 mm
C ............. 0.8 m
D ............. 0.9 m
E ............. 1.0 m
F ............. 1.1 m
N ............. 36
pg 6 ............ 550 kPa
Bolt grade ........... ISO 10.9
Bolt spec. .......... M10 × 1.5

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