point where the pressure in the discharge line had reduced because of 

 pipe friction from 155 pounds per square inch to to 2 pounds per square 

 inch pressure. 



Table 2 records actual pump-operating data taken during various 

 visits to the operation. From these figures, the average power consump- 

 tion and horsepower used to operate the pumps in the system can be computed. 

 Table 3 lists averages of data on Table 2 with calculations for horsepower 

 consumption, percent of load, and efficiency of operations. 



The contractor's time rolls were not available for checking the number 

 of employees engaged on the project. However, by actual count, during 

 project inspection, a total of 76 personnel consisted of the following: 



1 - job engineer 



1 - assistant engineer 



2 - engineering aides 

 1 - accountant 



1 - purchasing agent 



2 - office girls 



1 - field superintendent 



6 - foremen; 2 per shift 



15 - field operating men; 5 per shift 



1 - caterpillar tractor operator 



3 - surge pit operators; 1 per shift 



12 - men in booster station; 4 per shift 



6 - men on pipeline maintenance; 2 per shift 



24 - main pumphouse operators (welders, 

 operations and maintenance men) ; 

 8 per shift 



III. CONCLUSIONS 



Use and operation of the hydraulic method for moving sand is considered 

 economical in this particular location and for these special types of opera- 

 tions. Here, the contractor received 22.6 cents per cubic yard for the 

 removal and disposal of 14,000,000 cubic yards of material. The system is 

 economical only in locations where a satisfactory quantity of sand is close 

 by. The pumping equipment is a semipermanent installation, mounted on 

 concrete foundations, thus making the cost of frequently changing location 

 prohibitive. The system must also be located near a large source of water 

 that is easily available for use. The installation would not be advisable 

 for small operations, because initial installation cost is high. If only 

 a small amount of material were to be moved, the cost of installation and 

 operation combined would make the yardage cost prohibitive. 



15 



