Laserfiche WebLink
I <br /> LAURENCE TEST <br /> CIVIL ENGINEER <br /> SEPTIC SYSTEM DESIGN -FILTER BED <br /> (Per San Joaquin County Onsite Wastewater Design Standards,ordinance Code 9-mo-5) <br /> SAFETY FACTOR OVER MINIMUM SIZE 115% <br /> C.THEORETICAL CAPACITY OF FILTER BED <br /> (BASED ON PERCOLATION RATE OF SOIL) <br /> SOIL TYPE Silty Clay FROM SOIL SUITABILITY STUD' <br /> OBSERVED FERC RATE 20 MINIIN FROM SOIL SUITABILITY STUD' <br /> OR 0.05 IN/MIN INVERSE OF PERC RATE <br /> TEST HOLE DIAMETER 5 IN DIAM <br /> TEST HOLE AREA 0.94 SQFT <br /> MINUTES PER DAY 1,440 MINIDAY CONSTANT <br /> INCHES PERC'D PER DAY 72 INIDAY PERC RATE XMINUTES/DAY <br /> APPLIED TO 1 SQFT 528 CUIN/DAY/SQFT <br /> GALLONS PERC'D PER DAY 2.29 GAL/DAY/SQFT <br /> ALLOWABLE APPLICATION RATE 1_12 GALIDAY/SQFT PER MSTP(FIG. 19) <br /> THEORETICAL MAXIMUM CAPACITY OF FILTER BED 1,565 GALIDAY <br /> SAFETY FACTOR 116% <br /> D. CONCLUSIONS <br /> A 1500 GAL TANK WITH 1,400 SQ FT FILTER BED WILL BE ACCEPTABLE AND WILL PROVIDE A <br /> 15%SAFETY FACTOR <br /> E.TYPICAL SECTION <br /> //\fj\// \//\//\//\/ //\/ BACKFU <br /> /�X <br /> H LINE PAPER- /\\�\\/\\/\\/\\/\\/\\f\\/\\/\\/ 4"0 PERFORATED <br /> 40 PVC OR ABS F <br /> \\/\\/\\/\\/\\/\\/ \/\\/\\/ SLOPL AT 1 <br /> N 2,• <br /> c <br /> I CV <br /> I <br /> g 2• 1" TO 2-1/2" FILTER ROC4 <br /> I <br /> I <br /> 1/21/2008 PAGE 2 OF 2 <br /> I <br />