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3 . RECORD THE AMOUNT OF WATER ADDED TO THE SYSTEM <br /> OVER THE 2 HOUR PERIOD , <br /> 4 , USE THE FOLLOWING FORMULAS TO DETERMINE THE <br /> MAXIMUM ALLOWABLE LEAKAGE LIMIT OF GASKETED PIPE , <br /> DUCTILE IRON LEAKAGE FORMULA : <br /> L = S DP/ 133 , 200 <br /> WHERE : <br /> L = ALLOWABLE LEAKAGE ( GPHJ , <br /> D = NOMINAL DIAMETER OF PIPE ( INCHES ) , <br /> P = AVERAGE TEST PRESSURE ( PSI ) , AND <br /> S = LENGTH OF PIPE ( FT) . <br /> PVC GASKETED JOINT LEAKAGE FORMULA: <br /> L = ND P <br /> 7400 <br /> WHERE : <br /> L = ALLOWABLE LEAKAGE ( GPH ) , <br /> N = NUMBER OF JOINTS , <br /> D = NOMINAL DIAMETER OF PIPE ( INCHES ) , <br /> P = AVERAGE TEST PRESSURE ( PSI ) . <br /> Be PVC SOLVENT—WELD PIPE CONNECTIONS SHALL HAVE NO <br /> LEAKAGE , POLYETHYLENE CONTROL TUBING LINES SHALL <br /> HAVE NO LEAKAGE . <br /> C . WHEN TESTING A SYSTEM WHICH CONTAINS METAL=SEATED <br /> VALVES , AN ADDITIONAL LEAKAGE PER CLOSED VALVE OF 0 . 078 <br /> GPH/ INCH OF NOMINAL VALVE SIZE IS ALLOWED . <br /> D . REPAIR ALL LEAKS AND RETEST THE PIPELINE UNTIL IT PASSES <br /> THE TEST , <br /> APPLICATION UNIFORMITY TESTING. <br /> A . THE UNIFORMITY OF APPLICATION IS A MEASURE OF SYSTEM <br /> PERFORMANCE , FACTORS AFFECTING UNIFORMITY ARE : <br /> 1 . WIND , <br /> 2 , SPACING OF SPRINKLERS , <br /> 3 , WATER PRESSURE AT THE SPRINKLER . <br /> 4 , NOZZLE SIZES AND COMPATIBILITY BETWEEN SPRINKLERS . <br /> 5 , SPRINKLER DISCHARGE PATTERN . <br /> 6 . SPEED AND UNIFORMITY OF ROTATION OF ROTARY <br /> SPRINKLERS , <br /> 7 . RADIUS ADJUSTMENT . <br /> Be APPLICATION UNIFORMITY TESTING IS NOT MANDATORY . <br /> HOWEVER , IF IT IS DESIRED TO CONDUCT A UNIFORMITY TEST , <br /> IN ADDITION TO THE OTHER TESTS DESCRIBED HEREIN , IT <br /> SHOULD BE CONDUCTED IN ACCORDANCE WITH ASAE S-398 . 1 , <br /> PROCEDURE FOR SPRINKLER TESTING AND PERFORMANCE <br /> REPORTING , THE UNIFORMITY OF MICROIRRIGATION SYSTEMS <br /> F:\Engineering\Special Projects\Eagle Trace Phase 2\Contract Documents\Eagle Trace Subdivision Phase <br /> II\IRRIGATION SPECIFICATIONS from W. F. McCain .doc - 13 - <br />