indicates that pump No. 1, the sea pump, delivers 41,000 gallons per 

 minute at approximately 85 pounds o£ pressure for use by the system. 

 No information is available on pipeline velocities, either in the water 

 or sand lines. From the above information, the following results were 

 calculated: 



. , , , Quantity moved in period 



Average material moved per day = tt? -r-^ — r~5 =~''^ =~Tr 



* r / Operational days m period 



= iJ:2|,700 ^ 44^828 ydVday 



As two eductors and one flume were operating, the volume per unit per day 

 moved was : 



— I = 14,943 yd^/day/unit or — ^ — = 623 yd ^/hr /unit 



Noting the pressures at various hydraulic giant nozzles at various times 

 during operations, it was found that the pressure averaged close to 90 

 pounds per square inch under above conditions. From nozzle data furnished 

 by the Joshua Hendy Iron Works, manufacturers of the giants, the quantity 

 of water delivered by each nozzle was calculated, using a figure of 90 

 percent of the theoretical flow. A nozzle for a 2.5-inch sluice pipe 

 delivers 1,775 gallons per minute, or: 



1,775 gal/min ^ 238 ftVmin 

 7.48 gal/ft^ 



The 5,5-inch eductor nozzle delivers 8,560 gallons per minute, or: 



8,560 gal/min ^ ^^^^^ ^^S/^i, 

 7.48 gal/ft 3 



The 5-inch giant nozzle (somewhat worn) delivers 7,100 gallons per minute, 

 or: 



7,100 gal/min ^ 950 f,3/„i^ 

 7.48 gal/ft^ 



The sand delivered per eductor line or sluice line is; 



623 gal/min in to j3/ • / 

 2 — I. — = 10.38 yd^'/mm/unit 



60 gal/ft^ 



13 



