Engineering Design Manual
TABLE OF CONTENTS
- Chapter 1: Loudoun Water’s Role
- Chapter 2: Project Administration
- Chapter 3: Application and Plan Preparation
- Chapter 4: Water Distribution
- Chapter 5: Wastewater Collection
- Chapter 6: Reclaimed Water
- Chapter 7: Community Water Systems
- Chapter 8: Community Wastewater Systems
- Chapter 9: Sewage Pumping Stations
Appendix A, Application and Plan Preparation
Appendix B, Construction Submittals
Appendix C, Easements
Appendix D, Community Systems
Appendix E, Corrosion Control
Appendix F, Construction Details
| General Details: | |
|---|---|
| G1 - LIST OF FIGURES | G11 - RESTRAINT OF VERTICAL OFFSET |
| G2 - LIST OF FIGURES | G12 - CASING INSTALLATION |
| G3 - LIST OF FIGURES | G13 - PAVEMENT PATCH ON PRIVATE PROPERTY |
| G5A - STANDARD NOTES | G15 - IMPERVIOUS TRENCH CHECK |
| G5B - STANDARD NOTES | G16 - MARKER POSTS AND TRACER PEDESTALS |
| G6 - PIPE BEDDING AND ENCASEMENT | G20 - VAULT FEATURES |
| G7 - CONCRETE THRUST BLOCK | G21 - VAULT NOTES |
| G8 - THRUST BLOCK DIMENSIONS | G22 - VAULT LADDER |
| G9 - LINE ANCHOR | G23 - HATCH SAFETY FEATURES |
| G10 - LINE ANCHOR ON LARGE PIPE | G24 - ELECTRONICS AT MAGNET METER |
| G25 - TRACER WIRE ACCESS BY BOX AT GRADE | |
| G26 - CONCRETE PIER | |
| G27 - COATING OF MECHANICAL JOINTS |
| Cathodic Protection: | |
|---|---|
| CP1 - BONDING OF PIPE AND FITTING | CP8 - INSULATING FLANGE TEST STATION WITH ANODES |
| CP2 - THERMITE WELD | CP9 - TEST STATION AT STEEL CASING |
| CP4 - ANODE PLACEMENT | CP10 - TEST STATION BY PEDESTAL |
| CP5 - SPLICE OF ANODE TO HEADER CABLE | CP11 - TEST STATION BY BOX AT GRADE |
| CP6 - ANODE BED AND TEST STATION | CP12 - TEST STATION OFFSET FROM PIPELINE |
| CP7 - INSULATING FLANGE TEST STATION | CP13 - 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 ENCASEMENT |
| Water: | |
|---|---|
| W1 - VALVE BOX |
W22 - SERVICE CONNECTION FOR 3/4" METER-RESIDENTIAL USE |
| W2 - TEMPORARY BLOW-OFF | W23 - SERVICE CONNECTION FOR 3/4" AND 1" METERS - COMMERCIAL USE |
| W4 - AIR RELEASE | W24 - WATER SERVICE BY JACK AND BORE |
| W8 - TABLE OF ALLOWABLE LEAKAGE | W25 - WATER METER IN SIDEWALK OR SLAB |
| W9 - HYDRANT NOTES |
W27 - SERVICE CONNECTION FOR 1 1/2" AND 2" OMNI C2 METERS |
| W10 - FIRE HYDRANT ALONG STREET |
W28 - 2" METER NO RISE SETTER OUTDOORS |
| W11 - FIRE HYDRANT BEHIND DITCH | W29 - 3", 4" AND 6" METER IN VAULT |
| W12 - DEAD END HYDRANT | W30 - 2",3", 4" OR 6" METER INDOORS |
| W13 - HYDRANT BOLLARDS | W31 - SERVICE ENTRANCE WITH INDOOR METER |
| W20 - FIRE SERVICE CONNECTION |
W32 - 3/4" OR 1" SUBTRACTION OR INDUSTRIAL PROCESS METER |
| W21 - SAMPLING STATION |
W33 - 1 1/2" OR 2" SUBTRACTION OR INDUSTRIAL. PROCESS METER |
| W34 - INDOOR METER NOTES | |
| W35 - PIPE RESTRAINT FOR CUT IN |
| Reclaimed Water: | |
|---|---|
| R1 - REUSE VALVE BOX | R11 - REUSE SERVICE FOR 2" ULTRASONIC METER |
| R2 - REUSE AIR RELEASE | R12 - 2" ACCUMAG REUSE METER |
| R3 - TERMINUS BY FLUSHING HYDRANT | R13 - 3", 4" OR 6" ACCUMAG REUSE METER IN VAULT |
| R4 - TEMPORARY TERMINUS BY BLOW-OFF | R14 - REUSE SERVICE ENTRANCE WITH INDOOR METER |
| R5 - REUSE FLUSHING HYDRANT BELOW GRADE | R15 - 3/4" OR 1" REUSE METERS INDOORS |
| R6 - REUSE FLUSHING HYDRANT ABOVE GRADE | R16 - 3", 4" OR 6" ACCUMAG REUSE METER INDOORS |
| R9 - REUSE SAMPLING STATION | R18 - WARNING SIGNS AT REUSE FIXTURES |
| R10 - REUSE SERVICE FOR 3/4" AND 1" METERS | R20 - STANDARD NOTES FOR RECLAIMED WATER |
| Sewer Gravity: | |
|---|---|
| S1 - MANHOLE | S7 - ADVANCE BLASTING |
| S2 - SIDE VENT FOR MANHOLE | S10 - LATERAL |
| S3 - TOP VENT FOR MANHOLE | S11 - LATERAL WITH VERTICAL BENDS |
| S4 - OUTSIDE DROP CONNECTION | S12 - SANITARY CLEANOUT |
| S5 - INSIDE DROP CONNECTION | S13 - 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 STATION |
| Sanitary Force Main: | |
|---|---|
| FM1 - FORCE MAIN AIR RELEASE |
| Low Pressure Collection: | |
|---|---|
| LPC1 - GRINDER PUMP | LPC5 - FLUSHING CONNECTION |
| LPC2 - ELECTRICAL SUPPLY TO PUMP | LPC6 - LOCATION OF VALVES FOR IN-LINE FLUSHING CONNECTION |
| LPC3 - LOW PRESSURE LATERAL | LPC7 - TERMINAL FLUSHING CONNECTION |
| LPC4 - SERVICE BY TAP | LPC8 - AIR RELEASE FOR LOW PRESSURE SEWER |
| Pretreatment: | |
|---|---|
| PT1 - INTERCEPTOR/SEPARATOR |
Appendix G, Materials
When 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.