APPENDIX

ENGINEERING TABLES CHARTS AND DIAGRAMS

1. SEPTIC DRIP SYSTEM DESIGN DEFINITIONS
2. DRIP DISPOSAL SYSTEM DESIGN WORKSHEET - 4 ZONE
3. RECIRCULATING SAND FILTER DESIGN CALCULATIONS FOR DRIP
4. RECIRCULATING SAND FILTER DESIGN CALCULATIONS FOR CONVENTIONAL
5. DRIP DISPOSAL INSTALLATION SPECIFICATIONS
6. DRIP DISPOSAL MATERIAL SPECIFICATIONS
7. GENERAL DRIP DISPOSAL CONSTUCTION NOTES
8. SEPTIC DRIP DISPOSAL SYSTEM CENTRAL UNIT INSTALLATION RESIDENTIAL
9. CHART - SEPTIC DRIP HYDRAULIC LOADING RATES
10. CHART 2A HYDRAULIC UNIT HEAD LOSS 15 GPM & 25 GPM MODELS & CHART 3A DRIPPER LINE FIELD FLUSHING PRESSURE LOSSES & PUMP CURVE
11. PIPE FRICTION HEAD LOSS TABLE

GENERAL DRIP DESIGN DEFINITIONS

Design Sheet: Drip Disposal
DRIP DESIGN WORKSHEET: PROPERTY ADDRESS:_____________________________________________
TAX MAP #._________________PHONE:____________ DESIGNER'S NAME:__________________________

1. _____ GALLONS PER DAY_________BEDROOMS           Date:_____________
2. _____ GPD/L.F. SOIL LOADING RATE
3. _____ FT. X _____ FT. AREA FOR DISPOSAL LAYOUT a)_____ FT²
4. _____ GPD/FT² SOIL LOADING RATE PROVIDED ( #1 / # 4a )
5. _____ ZONES
6. _____ TOTAL DRIPPER LINE PROVIDED
7. _____ SEPTIC TANK SIZE
8. _____ DOSING TANK SIZE
9. _____ GALLONS PER INCH DOSING TANK
10. ZONE ONE
11. _____ TOTAL ABSORPTION AREA
12. _____ LINEAR FEET DRIPPER LINE
13. _____ LONGEST LATERAL LENGTH
14. _____ DOSING FLOW RATE
15. _____ NUMBER OF RETURN FIELD FLUSH CONNECTIONS
16. _____ FIELD FLUSH FLOW RATE
17. _____ TOTAL FLOW REQUIRED
18. ZONE TWO
19. _____ TOTAL ABSORPTION AREA
20. _____ LINEAR FEET DRIPPER LINE
21. _____ LONGEST LATERAL LENGTH
22. _____ DOSING FLOW RATE
23. _____ NUMBER OF RETURN FIELD FLUSH CONNECTIONS
24. _____ FIELD FLUSH FLOW RATE
25. _____ TOTAL FLOW REQUIRED
26. ZONE THREE
27. _____ TOTAL ABSORPTION AREA
28. _____ LINEAR FEET DRIPPER LINE
29. _____ LONGEST LATERAL LENGTH
30. _____ DOSING FLOW RATE
31. _____ NUMBER OF RETURN FIELD FLUSH CONNECTIONS
32. _____ FIELD FLUSH FLOW RATE
33. _____ TOTAL FLOW REQUIRED
34. ZONE FOUR
35. _____ TOTAL ABSORPTION AREA
36. _____ LINEAR FEET DRIPPER LINE
37. _____ LONGEST LATERAL LENGTH
38. _____ DOSING FLOW RATE
39. _____ NUMBER OF RETURN FIELD FLUSH CONNECTIONS
40. _____ FIELD FLUSH FLOW RATE
41. _____ TOTAL FLOW REQUIRED
42. _____ MAXIMUM DESIGN FLUSHING FLOW
43. _____ FEET HEAD LOSS HYDRAULIC UNIT (BASED ON # 43)
44. HYDRAULIC UNIT SUPPLY LINE SIZE (1-1/2" TYPICAL)
45. _____ INCHES PIPE
46. _____ LENGTH SUPPLY PIPE
47. _____ FT. STATIC LIFT (CENTRAL UNIT ELEVATION - OFF FLOAT ELEVATION)
48. _____ TOTAL FEET HEAD LOSS LINE (DYNAMIC HEAD LOSS + #48)
49. FORCE MAIN SUPPLY LINE PIPE SIZE & LENGTH
50. _____ ZONE ONE SIZE, _____ ZONE ONE LENGTH _____ FEET HEAD LOSS
51. _____ ZONE TWO SIZE, _____ ZONE TWO LENGTH _____ FEET HEAD LOSS
52. _____ ZONE THREE SIZE, _____ ZONE THREE LENGTH _____ FEET HEAD LOSS
53. _____ ZONE FOUR SIZE, _____ ZONE FOUR LENGTH _____ FEET HEAD LOSS
54. RETURN FLUSH LINE SIZE & LENGTH
55. _____ ZONE ONE SIZE, _____ ZONE ONE LENGTH _____ FEET HEAD LOSS
56. _____ ZONE TWO SIZE, _____ ZONE TWO LENGTH _____ FEET HEAD LOSS
57. _____ ZONE THREE SIZE, _____ ZONE THREE LENGTH _____ FEET HEAD LOSS
58. _____ ZONE FOUR SIZE, _____ ZONE FOUR LENGTH _____ FEET HEAD LOSS
59. _____ FEET HEAD LOSS TOTAL STATIC (VERTICAL LIFT)
60. TOTAL PRESSURE LOSS ( ADD ITEMS; 43,48,50-53,55-58,59,+FLUSHING)
61. _____ ZONE ONE HEAD LOSS, INCLUDES _____ FEET FLUSHING
62. _____ ZONE TWO HEAD LOSS, INCLUDES _____ FEET FLUSHING
63. _____ ZONE THREE HEAD LOSS, INCLUDES _____ FEET FLUSHING
64. _____ ZONE FOUR HEAD LOSS, INCLUDES _____ FEET FLUSHING
65. PUMP SIZING
66. _____ MAXIMUM PRESSURE LOSS TOTAL (HIGHEST FEET 61-64)
67. _____ DISC FILTER BACKFLUSH (#48 + 115' @15 GPM)
68. _____ GPM @ _____ FEET (LARGER OF 66 & 67)
69. PUMP MODEL___________________
70. _____GPM @ _____FEET _____VOLTS _____PHASE _____HP
71. TIME DOSING PER ZONE
• Two Zone Standard Enable           (180 min rest)
• Two Zone Peak Enable           (108 min rest)
• Four Zone Standard Enable           (90 min rest)
• Four Zone Peak Enable           (54 min rest)
72. ZONE ONE____ GPM ____MIN/DOSE ____AVE. CYCLES ____PEAK CYCLES____GAL/DOSE
73. ZONE TWO____ GPM ____MIN/DOSE ____AVE. CYCLES ____PEAK CYCLES____GAL/DOSE
74. ZONE THREE ____ GPM ____MIN/DOSE ____AVE. CYCLES ____PEAK CYCLES____GAL/DOSE
75. ZONE FOUR ____ GPM ____MIN/DOSE ____AVE. CYCLES ____PEAK CYCLES____GAL/DOSE
76. _____ INCHES DRAWDOWN FLOAT SWITCH SETTING (MINIMUM 4")

Design Sheet: Drip Disposal with Recirculating Sand Filter

PROPERTY ADDRESS:_________________________________________________________
_____________________________________TAX MAP #.___________PHONE:____________
DESIGNER'S NAME:_________________________________ TYPE: Single Tank Sand FiIter( ), Ratio Box ( )

1. _______ NO. OF BEDROOMS @ ___________GPD/BEDROOM
2. _______ NUMBER OF GALLONS PER DAY
3. _______ GAL/SQ FT/DAY SAND FILTER LOADING RATE (5 TO 10)
4. _______ SQ FT SAND FILTER REQUIRED (#2 / #3)
5. _______ S.F. MODULES @ ______ SQ FT / MODULE
6. _______ S.F. MODULES MANUFACTURED BY_________________
7. _______ :1 DESIGN RECIRCULATION RATIO (3 TO 5) BASED ON FORWARD FLOW
8. _______ TOTAL GALLONS PER DAY DOSED (#7 X #2) (NOTE FOR RATIO BOX; 3:1 HAS 2 PARTS RETURN TO RECIRC TANK AND 1 PART DISCHARGE,TOTAL GALLONS = FORWARD FLOW / % DISCHARGE)
9. ______ CYCLES PER DAY
10. ______ MIN OFF TIME PER CYCLE, 1 Cycle Per _____hr_____min (Typically 1hr 30 min)
11. ______ GALLONS PER CYCLE ( #8 / #9)
12. ______ INCH COVER SF PER CYCLE (#11/7.48 CUFT PER GAL/#5 X 12" PER FT.)
13. ______ GALLONS RECIRC TANK SIZE,@ ______GAL. PER INCH OF TANK
14. ______ INCHES DRAW DOWN PER CYCLE: (#11)/(#13@)
15. ______ GALLONS RECIRCULATION STORAGE (1/4 TO 1-DAY)
16. ______ NUMBER OF EMITTERS TO DOSE FILTERS (_____GPH/EMITTER)
17. ______ NUMBER OF RETURN FIELD FLUSH CONNECTIONS
18. ______ FIELD FLUSH FLOW RATE
19. ______ TOTAL FLOW REQUIRED
20. ______ IN. DIA. RSF SUPPLY PIPE______ FT. EQUIV. LENGTH OF PIPE SUPPLY LINE
21. ______ FT OF TOT HEAD LOSS SUPPLY
22. ______ IN. DIA. RSF RETURN PIPE______ FT. EQUIV. LENGTH OF PIPE RETURN LINE
23. ______ FT OF TOT HEAD LOSS RETURN
24. ______ FEET STATIC LIFT
25. ______ ZONE ONE RSF HEAD LOSS(21+23+24+CU LOSSES + _____ FEET FLUSHING
26. ______ FT OF TOT HEAD DESIGN
27. ______ MINUTES______SEC. PUMP RUN TIME
28. ______ RECOMMENDED PUMP(S):MAKE_________________________________
29. ______ MODEL_________________,______GPM AT _____TDH_____VOLTS_____PHASE_____HP, CONTROL PANEL:__________________________

DESIGN EXAMPLE:       RECIRCULATING SAND FILTER CALCULATION SHEET

JOB NAME:____________________________ DATE:___________
PROPERTY ADDRESS:__________________________________________________
TAX MAP #.___________PHONE:____________
DESIGNER'S NAME:___________________ TYPE: VALVE( ) BOX( )

1. _______NO. OF BEDROOMS @ ___________GPD/BEDROOM
2. _______NUMBER OF GALLONS PER DAY DESIGN FLOW
3. _______GAL/SQ FT/DAY SAND FILTER LOADING RATE (3 TO 10)
4. _______SQ FT SAND FILTER REQUIRED (#2/#3)
5. _______S.F. MODULES @ ______ SQ FT / MODULE (MANUFACTURED BY_______________,OR CAST IN PLACE)
6. _______ :1 DESIGN RECIRCULATION RATIO (3 TO 5) BASED ON FORWARD FLOW
7. _______ TOTAL GALLONS PER DAY DOSED (#6 X #2) (NOTE FOR RATIO BOX; 3:1 HAS 2 PARTS RETURN TO 1 PART DISCHARGE,TOTAL GALLONS = FORWARD FLOW / % DISCHARGE)
8. _______ CYCLES PER DAY
9. _______ MIN OFF TIME PER CYCLE (1 CYCLE PER _____HRS_____MIN)
10. _______ GALLONS PER CYCLE ( #7 / #8)
11. _______ GALLONS - PUMP TANK SIZE,@ ______GAL. PER INCH OF TANK
12. _______ INCHES DRAW DOWN PER CYCLE: (NO.10)/(NO.11A)
13. _______ GALLONS RECIRCULATION STORAGE (1/4 TO 1-DAY)
14. _______ NUMBER OF LINEAL FEET OF LATERALS TO RECEIVE PUMP
15. _______ GPM DESIGN DISCHARGE
16. _______ FEET STATIC LIFT
17. _______ IN. DIA. DISCHARGE PIPE
18. _______ FT. EQUIV. LENGTH OF PIPE
19. _______ FT OF TOT. DYNAMIC HEAD
20. _______MINUTES______SEC. DRAWDOWN TIME AT
21. _______ RECOMMENDED PUMP(S):MAKE_____________________________
22. _______ MODEL_________________,______GPM AT _____TDH_____VOLTS ______PHASE_____HP, CONTROL PANEL American Onsite

American Manufacturing Company, Inc.
P.O. Box 549, Manassas, VA 20108

DRIP DISPOSAL INSTALLATION SPECIFICATIONS

FORCE MAIN TESTING
All force mains shall be tested for leaks during startup. Uncovered force mains shall be visibly inspected during a Zone Dose. If a leak is suspected in covered force mains then the force main shall be tested at a minimum pressure of at least 50 percent above the design operating pressure, for at least 30 minutes. There shall be no discernible leakage. All supply and return manifolds shall remain uncovered until drainfield testing is complete.

PIPE BEDDING
Classes A, B or C bedding (latest edition of ASCE Manuals and Reports on Engineering Practice and the WEF Manual of Practice) or AWWA pipe installation conditions 3, 4 or 5, shall be provided for installation of pipelines in excavated trenches. Installation of pipelines of flexible materials shall be in accordance with recognized standards. For residential installations of PVC pipe less than 3" diameter, excavation to undisturbed earth and direct burial with excavated dirt that will not damage the pipe is required.

WATER SEWER LINE CROSSING
Sewer shall be laid at least ten (10) feet horizontal from a water main. The distance shall be measured edge-to-edge. When local conditions prohibit this horizontal separation, the sewer may be laid closer provided that the water main is in a separate trench or an undisturbed earth shelf located on one side of the sewer and the bottom of the water main is at least 18 inches above the top of the sewer. Where this vertical separation cannot be obtained, the sewer shall be constructed of water pipe material in accordance with AWWA specification and pressure tested in place without leakage prior to backfilling. The hydrostatic test shall be conducted in accordance with the most recent edition of the AWWA Standard for the pipe material, with a minimum test pressure of 30 psi.

Sewers shall cross under water mains such that the top of the sewer is at least 18 inches below the bottom of the water main. When local conditions prohibit this vertical separation, the sewer shall be constructed of AWWA specified water pipe and pressure tested in place without leakage prior to backfilling, in accordance with the provisions of this chapter.

Sewers crossing over water mains shall be laid to provide a separation of at least 18 inches between the bottom of the sewer and the top of the water main. The sewer must be constructed of AWWA approved water pipe and pressure tested in place without leakage prior to backfilling, in accordance with the provisions of this chapter. The sewers must have adequate structural support to prevent damage to the water main and sewer joints must be placed equidistant and as far as possible from the water main joints.

DRIP DISPOSAL MATERIAL SPECIFICATIONS

DISC FILTERS - Disc Filters shall be an oblique filter, entirely of plastic, with two 3/4" male end connections to NPT schedule 40 pressure PVC. The filter elements shall consist of grooved rings, mounted on a spine, forming a cylindrical filter body. The rings are to be kept together by a spring seated at the bottom of the filter cover. The out-in filter shall be of the screw in type with nitrilic rubber o-ring seal. The body materials shall be polyester, the spine and rings shall be polypropylene, and the spring shall be stainless steel. The nominal filtration capacity of the filter shall be 115 microns.

DRIPPER TUBING - The dripper tubing shall be Netafim Bioline pressure compensating dripperline for wastewater. The tubing shall be nominal 0.61 gallons per hour (+/- 5% flow rate from 7 to 60 psi). The tubing shall function as a turbulent flow emitter between 0 and 7 psi, ensuring that the nominal design flow is not exceeded at system start-up. The tubing shall be polyethylene 120 psi rating. Tubing end connections and splice connections shall be manufactured specifically for the tubing and for connection to standard schedule 40 NPT adapters.

AUTOMATIC CONTROL VALVES - The automatic control valves shall be solenoid activated diaphragm valves by Bermad. The body and cover shall be reinforced nylon. The metal parts shall be stainless steel, the diaphragm shall be nylon-fabric reinforced polyisoprene. The seals shall be Buna-N. These valves shall operate electrically using hydraulic pressure to open and to close.

RETURN PRESSURE ASSEMBLY FOR ZONE RETURN CONTROL VALVE - The automatic zone return valve shall, in the event the drip zones are over 10 feet in vertical elevation above the hydraulic unit, have installed a "return pressure assembly". The assembly is to be used to prevent the line from draining after or during each dose. See standard detail.

GRAVITY PIPING - All gravity piping shall be schedule 40 PVC DWV as a minimum. Fittings shall be Schedule 40 PVC suitable for underground installation. All joints shall be solvent welded with the use of primer and PVC Glue.

NON-DRIPPER LINE PRESSURE PIPING - All non-dripper line pressure piping shall be PVC schedule 40 pressure rated. Rigid piping shall be standard ASTM 1120 for use with solvent welded Schedule 40 fittings. Flex piping shall be schedule 40 PVC flex pipe for use with pressure fittings.

FLOAT SWITCHES - Float switches for level indication and control shall be encapsulated mechanical differential microswitches. The switches shall be Square D, American Electronic Components, or equal.

GENERAL VALVES - All gate, ball, globe and check valves shall be Schedule 40. Check valves shall be of the swing check design of metallic bronze with corrosion resistant metal hinge pin for use in wastewater.

PIPING DISCONNECTS - Piping disconnects shall be PVC schedule 80 unions.

AIR RELEASE VALVES - Air release valves shall be resilient seat "pop-up" type air release valves for use with filtered effluent (nominal filtration size of 115 microns.)

WIRE SPLICES - Field wire splices shall be installed in suitable wire splice pull boxes with waterproof connections for access to splice connections. The boxes shall have structural capacity for in ground installation and light vehicle yard care traffic.

SPECIAL DRIP EQUIPMENT - All non-specified drip equipment shall be as supplied by American Manufacturing Company, Inc. including the controls, drip hydraulic unit, pumps, and specialty fittings.

PIPE BEDDING- In ground piping shall be installed according to local codes. Piping shall be installed on original soil or suitably compacted fill or gravel bedded excavations on original soil. Free standing piping shall be schedule 40 PVC and assembled with restrained joints.

GENERAL DRIP DISPOSAL CONSTRUCTION NOTES

1. NO WET WEATHER INSTALLATION.
2. NO ACTIVITY ON DRAINFIELD OTHER THAN MINIMUM TO INSTALL SYSTEM.
   DO NOT PARK EQUIPMENT OR STORE MATERIALS ON DRAINFIELD AREA.
3. HORIZONTAL SPACING BETWEEN DRIPPER LINES SHALL BE AS SPECIFIED.
   AND INSTALLATION DEPTH SHALL BE AS SPECIFIED.
4. ALL PVC PIPE AND FITTINGS SHALL BE PVC SCH40 TYPE 1 RATED FOR PRESSURE APPLICATIONS. ALL GLUED JOINTS SHALL BE CLEANED AND PRIMED WITH PURPLE (DYED) PVC PRIMER PRIOR TO BEING GLUED.
5. ALL CUTTING OF PVC PIPE, FLEXIBLE PVC AND/OR DRIPPER TUBING SHALL BE ACCOMPLISHED WITH PIPE CUTTERS. SAWING OF PVC PIPE, FLEXIBLE PVC AND/OR DRIPPER TUBING SHALL BE FOLLOWED BY CLEANING ALL SHAVINGS OR SAWING SHALL NOT BE ALLOWED.
6. ALL OPEN PVC PIPE, FLEXIBLE PVC AND/OR DRIPPER TUBING IN THE WORK AREA SHALL HAVE THE ENDS COVERED WITH DUCT TAPE DURING CONSTRUCTION TO PREVENT CONSTRUCTION DEBRIS FROM ENTERING THE PIPE. PRIOR TO GLUING ALL GLUE JOINTS SHALL BE INSPECTED FOR AND CLEARED OF CONSTRUCTION DEBRIS.
7. PRIOR TO STARTUP OF THE DRIP DISPOSAL SYSTEM THE AIR RELEASE VALVES SHALL BE REMOVED AND EACH ZONE IN THE SYSTEM SHALL BE FLUSHED AS FOLLOWS: a) USING AN APPROPRIATE LENGTH OF FLEXIBLE PVC PIPE W/ A MALE FITTING ATTACHED TO THE AIR RELEASE CONNECTION TO DIRECT THE FLUSHING AWAY FROM THE CONSTRUCTION AREA, b) FLUSH THE ZONE WITH A VOLUME OF WATER (CLEAN WATER TO BE PROVIDED BY CONTRACTOR) EQUAL TO 1.5 TIMES THE VOLUME OF THE PIPES FROM THE CENTRAL UNIT TO THE AIR RELEASE VALVE, c) REPEAT THIS PROCEDURE FOR EACH ZONE (THE FLUSHING OF THE SYSTEM IS ACCOMPLISHED BY MANUAL OVERRIDE OF THE CONTROL PANEL BY THE MANUFACTURER OR ENGINEER.)
8. IF EXISTING SEPTIC TANKS ARE TO BE USED, THEY SHALL BE PUMPED OUT BY A COMMERCIAL SEPTIC TANK PUMPER, CHECKED FOR LEAKAGE OR OTHER PROBLEMS, AND REPLACED IF NECESSARY. AFTER THE TANK IS EMPTIED, THE TANK SHALL BE RINSED, PUMPED, AND REFILLED WITH CLEAN WATER. DEBRIS IN SEPTIC TANK SHALL BE KEPT TO A MINIMUM SINCE IT COULD CLOG THE DISK FILTERS DURING STARTUP. (DISK FILTERS ARE NOT BACKFLUSHED DURING STARTUP AND ANY CLOGGING COULD CAUSE INCORRECT RATE OF FLOW READINGS FOR THE CONTROLLER.)
9. ONCE COMPLETED, DRAINFIELD AREA FOR SHALLOW INSTALLATIONS (LESS THAN 12") TO BE CAPPED WITH 6-8" OF CLEAN SOIL. ESTABLISH FESCUE COVER, CUT LONG (6-8").

Notes

CAD DRAWING TEMPLATES AVAILABLE IN DWG FORMAT

American Manufacturing has CAD drawings available for systems. The drawings are available to designers for use in specifying American Packages. The CAD files are provided in AUTO CAD LITE (DWG) or (DXF) format free if you provide discs.

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