Eljen GSF Installation Manual Download

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Geotextile Sand Filter

CORPORATION

Innovative Environmental Products & Solutions Since 1970

Summary of Contents for GSF

Page 1: ...Geotextile Sand Filter CORPORATION Innovative Environmental Products Solutions Since 1970...

Page 2: ...SF DRAWINGS AND TABLES PAGE Drawings Fig 1 Typical GSF Module Trench Cross Section 6 Fig 2 GSF System Operation 7 Fig 3 Example Pressure Distribution Upward Facing Orifice Layout 11 Fig 4 Example Pres...

Page 3: ...PAGE Drawings Fig 21 33 40 46 System Sampling Procedure Drawings Drawings Fig 34 36 47 48 Tables Table 1 Specified Sand Sieve Requirements 5 Table 2 B43 Modified Gravity Trench Sizing 28 Table 3 B43...

Page 4: ...flow that is used to size a GSF system is 150 gallons per day per Bedroom Distribution Box Also known as a D Box is a plastic or concrete box that receives effluent from a septic tank and splits the f...

Page 5: ...ENTS STA Soil Treatment Area STE Septic Tank Effluent STE is anaerobically digested effluent that is discharged to a Geotextile Sand Filter module for further treatment Width Length The system width i...

Page 6: ...ntact Eljen s Technical Resource Department at 1 800 444 1359 GSF systems must be designed and constructed according to this Design Installation Manual and the State of Virginia Sewage Handling and Di...

Page 7: ...wth on the modules geotextile fabric interface surpassing the surface area required for traditional absorption systems An anti siltation geotextile fabric covers the top and sides of the GSF module an...

Page 8: ...lamps one clamp per Eljen module 1 7 DISTRIBUTION BOX Set the gravity system D box outlet invert a minimum of inch drop in elevation per linear foot to the top first module in the Modified Trench or P...

Page 9: ...not affect its performance 1 14 SYSTEM VENTING All systems require sufficient oxygen supply to the STA to maintain proper long term effluent treatment Therefore the following situations require venti...

Page 10: ...st be no less than three times the width of the trench for slopes up to 10 For slopes over 10 add one extra foot of separation for every 10 increase in slope The Specified Sand Modified Trench PAD GSF...

Page 11: ...percolation lines should have a minimum 1 1 4 inch inside diameter Orifices should be designed at 3 16 inch to 1 4 inch in diameter and at pre determined intervals per design and code Design requirem...

Page 12: ...pecified Sand placed between module rows at various center to center distances Percolation rate application rate and number of bedrooms have a direct effect with regards to center to center spacing Ta...

Page 13: ...ll be washed concrete sand meeting the requirements of ASTM C33 with less than 10 passing a 100 sieve and less than 5 passing a 200 sieve 6 Backfill and Finish Grading Carefully place backfill over th...

Page 14: ...he GSF To maintain this airflow and fully aerate the GSF system it is important that air vents are located only on the distal end of the GSF pipe network If a pressure or pump dosed system is specifie...

Page 15: ...ION BEHIND A TREE OR SHRUB GSF MODULES MOUNDED BACKFILL OVER MODULES COVER FABRIC NOT SHOWN OVER DISTRIBUTION PIPE AND MODULES CLEAN BACKFILL FINISHED GRADE SHRUB FIGURE 7 AIR BY PASS LINE PLAN VIEW F...

Page 16: ...RISER INLET PIPE FROM SEPTIC TANK LPP PUMP LINE DISTRIBUTION BOX OUTLET PIPE TO GSF MODULE ROW MINIMUM 2 DIAMETER BY PASS AIR LINE 8 0 Commercial Systems Commercial systems require different sizing an...

Page 17: ...Use 4 inch SDR 35 or equivalent non perforated pipe from the distribution box to the GFS modules Recommended drop for gravity systems from D Box to modules is 1 8 inch per linear foot 12 Center 4 inch...

Page 18: ...L 12 NATIVE SOIL 12 18 OF CLEAN FILL 12 18 OF CLEAN FILL SPECIFIED SAND 19 12 UP TO 10 SLOPE 1 FOR EACH INCREASE OF 10 36 FIGURE 10 MULTIPLE TRENCH PLAN VIEW NATIVE SOIL SPECIFIED SAND DISTRIBUTION BO...

Page 19: ...carpenter s level and or a laser level before placing the modules 10 Place GSF modules with WHITE PAINTED STRIPE FACING UP end to end on top of the Specified Sand 11 Provide d box s installed in accor...

Page 20: ...TEM SPECIFIED SAND 12 12 18 OF CLEAN FILL SPECIFIED SAND 12 UP TO 10 SLOPE 1 FOR EACH INCREASE OF 10 PER DESIGN EXISTING GRADE KEY IN TO EXISTING GRADE 3 1 3 1 FIGURE 13 SLOPING SHALLOW PLACEMENT TREN...

Page 21: ...top of the Specified Sand 10 Provide d box s installed in accordance with this manual and current Virginia Sewage Handling and Disposal Regulations 11 Use 4 inch SDR 35 non perforated pipe or equival...

Page 22: ...PAINTED STRIPE FACING UP end to end on top of the Specified Sand 10 Provide d box s installed in accordance with this manual and current Virginia Sewage Handling and Disposal Regulations 11 Use 4 inc...

Page 23: ...IFIED SAND PER DESIGN 12 18 OF CLEAN FILL 12 19 1 2 CENTER TO CENTER SPACING FIGURE 15 RAISED OR FILL PAD SYSTEM CROSS SECTION STATE OR LOCAL FILL REQIREMENTS GRADE LOAMAND SEED ORGINIAL GRADE REMOVE...

Page 24: ...ATED PIPE WITH HOLES AT 5 7 O CLOCK TYP DISTRIBUTION BOX 36 PER DESIGN PER DESIGN 6 SPACING VARIES FIGURE 17 PUMP DOSED PAD SYSTEM PLAN VIEW WITH VENTING IF REQUIRED NON PERFORATED PIPE SEPTIC TANK SP...

Page 25: ...e beginning of each row of modules along the slope 10 Use 4 SDR 35 or equivalent non perforated pipe from the d boxes to each row of the GSF modules 11 Install a line of 4 SDR 35 perforated distributi...

Page 26: ...RE 19 SLOPED PAD SYSTEM CROSS SECTION Note Equal Distribution Required REMOVE TOP SOIL STABALIZE 3 1 SLOPE WITHA MIMIMUM OF 3 OF LOAMAND SEED ORGINAL GRADE 1 3 SPECIFIED SAND FILL MATERIAL TOP SOILAND...

Page 27: ...r trench applications are derived from trench width bottom area only Minimum area of system required is based around GPD and TL 2 HLR not actual installed area FIGURE 20 MODIFIED TRENCH OPTION CROSS S...

Page 28: ...789 6 30 40 50 10 45 0 85 48 529 706 882 6 34 45 56 12 50 0 75 48 600 800 1000 6 38 50 63 13 55 0 70 48 643 857 1071 6 41 54 67 14 1 6 f t 2 0 f t 60 0 65 60 692 923 1154 12 35 47 58 12 65 0 60 60 75...

Page 29: ...locate desired trench width For this example the trench width is 5 feet Total Modules required for given percolation rate 60 Modules Calculate Modified Trench Length Assume 3 rows of modules using 20...

Page 30: ...6 21 27 34 7 30 1 20 48 375 500 625 6 24 32 40 8 35 1 10 48 409 545 682 6 26 35 43 9 40 1 00 48 450 600 750 6 29 38 47 10 45 0 90 48 500 667 833 6 32 42 53 11 50 0 80 48 563 750 938 6 36 47 59 12 55...

Page 31: ...column and locate desired trench width For this example the trench width is 4 feet Total Modules required for given percolation rate 40 Modules Calculate Modified Trench Length Assume 2 rows of module...

Page 32: ...1000 1250 250 24 32 40 8 70 0 55 818 1091 1364 273 27 36 45 9 75 0 50 900 1200 1500 300 27 36 45 9 80 0 45 1000 1333 1667 333 27 36 45 9 85 0 40 1125 1500 1875 375 27 36 45 9 90 0 35 1286 1714 2143 42...

Page 33: ...length 6 inches at each end of trench for Specified Sand 11 modules x 4 lf module 1 lf of Specified Sand A PAD length of 45 lf Calculate Approximate PAD Width Divide the PAD area in square feet by PAD...

Page 34: ...5 600 800 1000 200 24 32 40 8 60 0 70 643 857 1071 214 24 32 40 8 65 0 65 692 923 1154 231 24 32 40 8 70 0 60 750 1000 1250 250 27 36 45 9 75 0 55 818 1091 1364 273 27 36 45 9 80 0 50 900 1200 1500 30...

Page 35: ...additional one foot of length 6 inches at each end of trench for Specified Sand 10 modules x 4 lf module 1 lf of Specified Sand A PAD length of 41 lf Calculate Approximate PAD Width Divide the PAD ar...

Page 36: ...pumping of effluent Wiring or electrical problems Infiltration of ground water or surface water into pump chamber discharge a high volume or pumping rate to d box and GSF system No vent installed on d...

Page 37: ...t c Pump settings incorrect or not working properly d More occupants or bedrooms than system were designed for e Unusually high water usage f Garbage disposal g Water softener backwash h Excessive gre...

Page 38: ...tem by the owner and operator Requirements for log entries are in the section below Operators Responsibilities Keep operators manual on the premises for transfer to next owner Schedule routine Operato...

Page 39: ...Port Installation SAMPLING PARTS INSTALLED WITHIN SYSTEM AREA EQUIPTMENT FOR TAKING SAMPLES Collection Pipe With Sampling Tube Sampling Tube Storage Pipe Length and Size Per design Cap or Irrigation...

Page 40: ...System Sampling Port consists of a Collection Pipe b Sampling Tube c Sampling Tube Storage Pipe FIGURE 21 SYSTEM SAMPLING PORT LOCATIONS GSF COLLECTION PIPE PIPE SAMPLING TUBE 3 Carefully lay out the...

Page 41: ...igure 21 Keep the sampling tube out of the way and out of the trench FIGURE 23 PLACE SAMPLERS ON SAND COLLECTION PIPE INSTALLED LEVEL KEEP SAMPLING TUBE OUT OF THE WAYAND OUT OF THE TRENCH 3 Place ano...

Page 42: ...ORAGE PIPE IS INSTALLED 2 3 ABOVE COLLECTION PIPE COLLECTION PIPE INSTALLED LEVEL SAMPLING TUBE 5 Install the remaining 6 inches of Specified Sand above the collection pipe and compact FIGURE 26 COMPL...

Page 43: ...LE 2 Use 4 inch SDR 35 or equivalent non perforated pipe from the distribution box to the GFS modules Recommended drop for gravity systems from D Box to modules is 1 8 inch per linear foot 3 Center 4...

Page 44: ...re clamp ends straight down into up facing core through the module fabric and into the underlying Specified Sand FIGURE 29 INSTALL WIRE CLAMP WIRE CLAMP 5 Spread the cover fabric over the top of the m...

Page 45: ...he remaining required amount of Specified Sand along both sides and end of the module rows Amount of Specified Sand will vary per design See Tables 2 5 for the amount of Specified Sand required 8 Care...

Page 46: ...ess Sampling Tube from the pipe Leave 5 10 feet of excess for easy sampling by the provider 2 Push entire Sampling Tube into the Sampling Tube Storage Pipe 3 Cap or place irrigation box over top of pi...

Page 47: ...be Storage Pipe 2 Ensure your Collection Flask is clean and ready to receive a sample One Collection Flask per System Sampling Port 3 Open the Sampling Tube Storage Pipe and remove the Sampling Tube E...

Page 48: ...o make a positive connection from the Collection Flask to the wet dry vac Please contact Eljen Corporation for guidance FIGURE 36 CONNECT SAMPLING FLASK TO WET DRY VAC UNCAPPED AND SAMPLING TUBE OUT C...

Page 49: ...fields Is daily flow within the system design flow If no explain Yes No Does the owner verify the system use as described above If no explain Yes No Septic tank last inspection date Check Pumps Filter...

Page 50: ...ted to the system Yes No Comments Are solids visible through the observation port If yes describe the condition and depth of solids Yes No Comments Is there evidence of surcharging or effluent ponding...

Page 51: ......

Page 52: ...tial and commercial applications Today Eljen is a global leader in providing innovative products and solutions for protecting our environment and public health COMPANY PHILOSOPHY Eljen Corporation is...

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