The pressure on the surface does not include the space occupied by the
area of the stay bolt, hence, to be absolutely correct that must be
deducted.
[Illustration: Fig. 46.]
NOTE.
Maxims and Instructions for the Boiler Room Useful to Engineers, Firemen & Mechanics; Relating to Steam Generators, Pumps, Appliances, Steam Heating, Practical Plumbing, etc. · 第 97 / 328 题