265 



Height of head 

 -«f Water. 



Amount discharged 



1 Par 



3 



4 

 5 

 C 



7 



tlirough Ori 



s foot* 2,722 cub. 



3,846 



4,710 

 5,436 

 G,075 

 G,654 

 7,183 

 7,672 

 8,135 

 8,574 

 8,990 

 9,384 

 9,764 

 10,130 

 10,472 



Amount discharged 

 througti Tube. 



3,539 cub. in. 



5,002 



0,126 



7,070 



7,900 



8,654 



9,340 



9,975 

 10,579 

 11,151 

 11,693 

 12,205 

 12,699 

 13,177 

 13,620 



VELOCITY OF WATER IN PIPES. 

 The following table shows the height of a head of water required to 

 overcome the friction in horizontal pipes 100 feet long, and to produce 

 a certain velocity, according to Sme.vton : 



Look for the velocity of the water per second in the pipe, in the up- 

 per line ; and in the column beneath it, and opposite the given diam- 

 * A Paris foot is about 12 4-5 U. S. inches, and 15 Paris feet are about 16 U. S. feet. 



M 



