Engineering Design Manual Engineering Design Manual Complete Copy TABLE OF CONTENTSChapter 1: Loudoun Water’s RoleChapter 2: Project AdministrationChapter 3: Application and Plan PreparationChapter 4: Water DistributionChapter 5: Wastewater CollectionChapter 6: Reclaimed WaterChapter 7: Community Water SystemsChapter 8: Community Wastewater SystemsChapter 9: Sewage Pumping Stations Appendix A, Application and Plan PreparationChecklist for Construction PlansTable of Minimum SeparationsHydraulic Model Results and Data SummaryCentral System Water Pressure ZoneSanitary Sewer - Design Computation TableSanitary Sewer - Angles for Minimum Core Separation Appendix B, Construction SubmittalsMaterials SubmittalBypass Pumping FormWater Shutdown Sequencing Form Appendix C, EasementsDeed of Easement Appendix D, Community SystemsCommunity Systems Process Guidance Appendix E, Corrosion ControlDesign and Installation RequirementsLinear Cathodic Protection Decision Tree Appendix F, Construction DetailsGeneral Details: G1 - LIST OF FIGURESG11 - RESTRAINT OF VERTICAL OFFSETG2 - LIST OF FIGURESG12 - CASING INSTALLATIONG3 - LIST OF FIGURESG13 - PAVEMENT PATCH ON PRIVATE PROPERTYG5A - STANDARD NOTESG15 - IMPERVIOUS TRENCH CHECKG5B - STANDARD NOTESG16 - MARKER POSTS AND TRACER PEDESTALSG6 - PIPE BEDDING AND ENCASEMENTG20 - VAULT FEATURESG7 - CONCRETE THRUST BLOCKG21 - VAULT NOTESG8 - THRUST BLOCK DIMENSIONSG22 - VAULT LADDERG9 - LINE ANCHORG23 - HATCH SAFETY FEATURESG10 - LINE ANCHOR ON LARGE PIPEG24 - ELECTRONICS AT MAGNET METER G25 - TRACER WIRE ACCESS BY BOX AT GRADE G26 - CONCRETE PIER G27 - COATING OF MECHANICAL JOINTSCathodic Protection: CP1 - BONDING OF PIPE AND FITTINGCP8 - INSULATING FLANGE TEST STATION WITH ANODESCP2 - THERMITE WELDCP9 - TEST STATION AT STEEL CASINGCP4 - ANODE PLACEMENTCP10 - TEST STATION BY PEDESTALCP5 - SPLICE OF ANODE TO HEADER CABLECP11 - TEST STATION BY BOX AT GRADECP6 - ANODE BED AND TEST STATIONCP12 - TEST STATION OFFSET FROM PIPELINECP7 - INSULATING FLANGE TEST STATIONCP13 - HOT SPOT PROTECTION COATING AND ANODE CP14 - HOT SPOT PROTECTION-ANODE PLACEMENT CP15 - FLUSHED MOUNTED TEST STATION WITH INSULATING BLANKET CP16 - MAGNESIUM ANODE CP17 - ISOLATED FLANGE CP18 - REFERENCE ELECTRODE CP19 - POLYETHYLENE ENCASEMENTWater: W1 - VALVE BOXW22 - SERVICE CONNECTION FOR 3/4" METER-RESIDENTIALUSEW2 - TEMPORARY BLOW-OFFW23 - SERVICE CONNECTION FOR 3/4" AND 1" METERS - COMMERCIAL USEW4 - AIR RELEASEW24 - WATER SERVICE BY JACK AND BOREW8 - TABLE OF ALLOWABLE LEAKAGEW25 - WATER METER IN SIDEWALK OR SLABW9 - HYDRANT NOTESW27 - SERVICE CONNECTION FOR 1 1/2" AND 2" OMNI C2METERSW10 - FIRE HYDRANT ALONG STREETW28 - 2" METER NO RISE SETTER OUTDOORSW11 - FIRE HYDRANT BEHIND DITCHW29 - 3", 4" AND 6" METER IN VAULTW12 - DEAD END HYDRANTW30 - 2",3", 4" OR 6" METER INDOORSW13 - HYDRANT BOLLARDSW31 - SERVICE ENTRANCE WITH INDOOR METERW20 - FIRE SERVICE CONNECTIONW32 - 3/4" OR 1" SUBTRACTION OR INDUSTRIAL PROCESSMETERW21 - SAMPLING STATION W33 - 1 1/2" OR 2" SUBTRACTION OR INDUSTRIAL. PROCESSMETER W34 - INDOOR METER NOTES W35 - PIPE RESTRAINT FOR CUT INReclaimed Water: R1 - REUSE VALVE BOXR11 - REUSE SERVICE FOR 2" ULTRASONIC METERR2 - REUSE AIR RELEASER12 - 2" ACCUMAG REUSE METERR3 - TERMINUS BY FLUSHING HYDRANTR13 - 3", 4" OR 6" ACCUMAG REUSE METER IN VAULTR4 - TEMPORARY TERMINUS BY BLOW-OFFR14 - REUSE SERVICE ENTRANCE WITH INDOOR METERR5 - REUSE FLUSHING HYDRANT BELOW GRADER15 - 3/4" OR 1" REUSE METERS INDOORSR6 - REUSE FLUSHING HYDRANT ABOVE GRADER16 - 3", 4" OR 6" ACCUMAG REUSE METER INDOORSR9 - REUSE SAMPLING STATIONR18 - WARNING SIGNS AT REUSE FIXTURESR10 - REUSE SERVICE FOR 3/4" AND 1" METERSR20 - STANDARD NOTES FOR RECLAIMED WATERSewer Gravity: S1 - MANHOLES7 - ADVANCE BLASTINGS2 - SIDE VENT FOR MANHOLES10 - LATERALS3 - TOP VENT FOR MANHOLES11 - LATERAL WITH VERTICAL BENDSS4 - OUTSIDE DROP CONNECTIONS12 - SANITARY CLEANOUTS5 - INSIDE DROP CONNECTIONS13 - WATER METER SETTING-SEWER ONLY ACCOUNTS S20 - TABLE OF ALLOWABLE LEAKAGE S21 - MANHOLE COVER S22 - BLOWDOWN METER VAULT S23 - BLOWDOWN METER VAULT NOTES S24 - PIGGING STATIONSanitary Force Main: FM1 - FORCE MAIN AIR RELEASE Low Pressure Collection: LPC1 - GRINDER PUMPLPC5 - FLUSHING CONNECTIONLPC2 - ELECTRICAL SUPPLY TO PUMPLPC6 - LOCATION OF VALVES FOR IN-LINE FLUSHING CONNECTIONLPC3 - LOW PRESSURE LATERALLPC7 - TERMINAL FLUSHING CONNECTIONLPC4 - SERVICE BY TAPLPC8 - AIR RELEASE FOR LOW PRESSURE SEWERPretreatment: PT1 - INTERCEPTOR/SEPARATOR Appendix G, MaterialsApproved Materials ListWhen the Product Review Committee makes determinations that materials should be added or deleted, or an approval/disapproval/conditional status be revised, the Committee Chair will update the table Approved Materials List. Determinations appear in red text with a revision date within the Approved Materials List. The document will be updated monthly or when revisions are necessary. Product Review Procedures