B08_-_Attachment5WaterUseHydr.pdf

PERI Water Use

185 visitors per day x 5 gallons per visitor = 925 gallons per day 14 employees x 16 gallons/day = 224 gallons per day 30 seasonal employees x 16 gall/day = 480 gallons per day

Total 1629 gallons per day 67 gallons per hour

1.13 gallons per minute

PERI Hydraulic Calculations for Proposed Community System Connection to the City of Garfield, Arkansas

Elevation at fire hydrant (City of Garfield Connection) 1470 feet Elevation at Park Headquarters 1410 feet Pressure at the City of Garfield Connection 105 psi = 242.55 ft.

Flow Test City of Garfield Connection (Fire Hydrant) 150 gpm Length of Proposed Water Main 5458 lineal feet City of Garfield Volume of Water (Rural Water) Unlimited, 80,000 gallon tank fed by

800,000 gallon Benton Washington Regional Tank

Assume SDR 21 200 psi Water Main Assume C=150 for PVC Calculations based on Hazen-Williams Total Elevation Head at Park Headquarters 242.55 ft. + (1470 ft-1410 ft) = 302.55 use 303 ft.

Dynamic Head

6-inch PVC HL/1000 ft. x 5458 ft./1000 ft = Total HL Pressure at HQ

@25 gpm <1/1000 ft. 5.458 negligible 303 ft. = 131.17 psi

@50 gpm .23 ft./1000 ft. 5.458 1.26 ft. (303ft.-1.26ft.) = 301.74 = 130.62 psi

@100 gpm .8 ft./1000 ft. 5.458 4.37 ft. 298.63ft. = 129.28 psi

@200 gpm 3 ft./1000 ft. 5.458 16.37 ft. 286.63ft. = 124.08 psi

@500 gpm 13 ft./1000 ft. 5.458 70.95 ft. 232.05 ft. = 100.45 psi

@750 gpm 34 ft./1000 ft. 5.458 185.57 ft. 117.43 ft. = 50.84 psi

@1000 gpm 57 ft./1000 ft. 5.458 311.11 ft. -8.11 ft. = -3.51 psi

P17PS01105 Water Use and Hydraulics Information Attachment 5