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Fountain Design - Engineering and Conversion Data

Quick Conversion Factors   Pipe Flow Guide
         
Convert From Multiply By Convert Into   Pipe sizes and capacities are those recommended as good practice for fluid velocities on hydronic applications.
       
Flow        
USGPM .0631 Litres/second  
Pipe Size
Flow usgpm
Pipe Size
Flow usgpm
USGPM 3.785 Litres/minute  
1 1/2"
10 - 25
5"
200 - 500
USGPM 227.3 Litres/hour  
2"
20 - 50
6"
330 - 800
Litres/sec. 15.85 USGPM  
3"
55 - 135
8"
700 - 1300
Litres/min. .264 USGPM  
4"
115 - 275
10"
1250 - 1750
Litres/hour .0044 USGPM    
Cu Ft/sec. 448.83 USGPM   Waterfall Requirements
(per lineal foot)
Cu M/min 264.2 USGPM  
         
Pressure      
Spill
gpm
maximum
fall height
 
PSI 6.895 KPA  
PSI 2.310 Ft. Head  
0.1"
5
1"
 
KPA .145 PSI  
0.2"
10
3"
 
KPA .334 Ft. Head  
0.3"
15
4"
 
Ft. Head 2.990 KPA  
0.4"
20
5"
 
Ft. Head 0.433 PSI  
0.5"
25
6"
 
Ft. Head 0.305 Metric Head  
0.6"
30
7"
 
Ft. Head 3.280 Ft. Head  
0.7"
35
8"
 
       
0.8"
40
8.5"
 
Volume      
0.9"
45
9"
 
U.S. Gals. 231.0 Cu. In.  
1.0"
50
10"
U.S. Gals .1337 Cu. Ft    
U.S. Gals 3.785 Litres   Example : To determine the gpm requirements to a 10 ft. long waterfall with a 3 ft. fall height; specified with 0.3" spill thickness, multiply 10 x 15 = 150 gpm
U.S. Gals .0038 Cu. Metres  
Litres .2642 U.S. Gals  
Litres .0353 Cu. Ft.    
Cu. Metres 35.311 Cu. Ft   Note : Turbulent water may require greater flow. Lower pool should be approximately two times larger than upper pool to handle start-up and shut-down variables.
Cu. Metres 264.2 U.S. Gals  
Cu. Ft 7.48 U.S. Gals  
Cu. Ft 28.329 Litres    
Cu. Ft 0.028 Cu. Metres    
         
Weight        
US Gals 8.35 Lbs.    
Litres 2.2 Lbs.    
Cu. Ft of water 62.46 Lbs.    
Cu. M. water 22.06 Lbs.    
         
Length        
Inches 2.54 Centimeters    
Feet .3048 Metres    
Metres 39.37 Inches    
Metres 3.28 Feet    
         
Horsepower        
HP .746 Kilowatts
HP 745.7 Watts
Kilowatts 1.34 HP
     
US Pump Charts    
GPM (60 cy) .80 GPM (50 cy)
Head (60 cy) .60 GPM (50 cy)

 



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