RULES FOR CALCULATING THE STEAM ENGINE. 215 



Diameter 16 inches 

 16 



96 

 16 



256 

 Height 86 feet 



1536 



2048 



22016 

 Velocity 128 feet 



176128 

 44032 

 22016 



96) 2818]048 (29'35 



192 5-87 one-fifth 



898 35'2 horse power. 

 864 



340 



288 



524 



The addition of one-fifth for friction and waste appears to be too much for large engines. We 

 would recommend, as more preferable, to multiply by the velocity increased by 20 feet, and 

 then to make no addition afterwards. The work, in the above example, would stand thus : 



22016 

 148 



176128 

 88064 

 22016 



96) 3258|368 (33*94 or 34 horse power. 



288 



378 

 288 



903 

 864 



396 



