Fountain Engineering and Conversion Data2018-12-03T22:08:51+00:00

Fountain Engineering and Conversion Data

At Long Island Fountain, we want to make sure you have the resources necessary to effectively design and install your fountain or waterfall and make educated decisions along the way. The fountain design engineering and conversion data below can help you quickly determine the correct flow, pressure, volume, weight, etc., for your project. We’ve also included a pipe flow guide, a gpm requirements chart for waterfalls and more.

As always, if you need help designing or planning out your fountain, turn to our helpful team. The professionals at Long Island Fountain have helped clients throughout the U.S. and abroad construct the fountains of their dreams. Give us a call at (631)-467-5115 or fill out our contact form to start the process of designing or building your fountain or waterfall.

Quick Conversion Factors

Covert From Multiply By Convert Into
Flow
USGPM .0631 Litres/second
USGPM 3.785 Litres/minute
USGPM 227.3 Litres/hour
Litres/sec. 15.85 USGPM
Litres/min. .264 USGPM
Litres/hour .0044 USGPM
Cu Ft/sec. 448.83 USGPM
Cu M/min 264.2 USGPM
Pressure
PSI 6.895 KPA
PSI 2.310 Ft. Head
KPA .145 PSI
KPA .334 Ft. Head
Ft. Head 2.990 KPA
Ft. Head 0.433 PSI
Ft. Head 0.305 Metric Head
Ft. Head 3.280 Ft. Head
Volume
U.S. Gals. 231.0 Cu. In.
U.S. Gals. .1337 Cu. Ft.
U.S. Gals. 3.785 Litres
U.S. Gals. .0038 Cu. Metres
Litres .2642 U.S. Gals
Litres .0353 Cu. Ft.
Cu. Metres 35.311 Cu. Ft.
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 745.7 Watts
US Pump Charts
GPM (60 cy) .80 GPM (50 cy)
Head (60 cy) .60 GPM (50 cy)

Pipe Flow Guide

Pipe Size Flow usgpm Pipe Size Flow usgpm
1 1/2″ 10 – 25 5″ 200 – 500
2″ 20 – 50 6″ 330 – 800
3″ 55 – 135 8″ 700 – 1300
4″ 115 – 275 10″ 1250 – 1750

Waterfall Requirement

(per lineal foot)

Spill gpm Maximum fall height
0.1″ 5 1″
0.2″ 10 3″
0.3″ 15 4″
0.4″ 20 5″
0.5″ 25 6″
0.6″ 30 7″
0.7″ 35 8″
0.8″ 40 8.5″
0.9″ 45 9″
1.9″ 50 10″

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

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.