Engineering Design Manual - Loudoun Water

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TABLE OF CONTENTS PAGE 2.10 FIELD ENGINEERING .......................................................................................................... 20 2.11 INSPECTION........................................................................................................................ 20 2.12 PROJECT CLOSEOUT ........................................................................................................... 20 A. As-built Survey and Record Drawings ...................................................................................... 20 B. Bond Reduction........................................................................................................................... 21 C. Bond Release ............................................................................................................................... 21 D. Land Use Permit.......................................................................................................................... 21 E. Maintenance Bond Release.........................................................................................................22 Chapter 3: Application and Plan Preparation ............................................23 3.1 PURPOSE ............................................................................................................................ 23 3.2 LOUDOUN COUNTY PLANNING AND LAND DEVELOPMENT REFERRALS ................................ 23 3.3 APPLICATION PROCEDURES ................................................................................................ 23 A. Initial Application .......................................................................................................................23 B. Subsequent Submissions ............................................................................................................24 C. Signature Sets ..............................................................................................................................24 D. Easement Documents .................................................................................................................24 E. Construction Permitting .............................................................................................................24 F. As-built Survey and Record Drawing Fee..................................................................................25 G. Revisions to Approved Construction Plans ...............................................................................25 3.4 CALCULATION OF REVIEW FEES .......................................................................................... 25 A. Pipeline Projects..........................................................................................................................25 B. Pumping, Treatment and Other Non-linear Facilities ..............................................................26 3.5 LOCAL REVIEW AUTHORITY................................................................................................ 26 3.6 REQUIREMENTS FOR CONSTRUCTION PLANS....................................................................... 26 A. Cover Sheet ..................................................................................................................................26 B. Vicinity Map ................................................................................................................................26 C. Revision Block .............................................................................................................................27 D. Zoning Tabulations .....................................................................................................................27 E. Scale .............................................................................................................................................27 F. North Arrow and Coordinates ....................................................................................................27 G. Horizontal Control ......................................................................................................................27 H. Vertical Control ...........................................................................................................................27 I. Property Identification................................................................................................................27 J. Easements....................................................................................................................................28 K. Topography..................................................................................................................................28 L. Natural Features..........................................................................................................................28 M. Manmade Features......................................................................................................................28 N. Existing Utilities ..........................................................................................................................28 O. Proposed Utilities........................................................................................................................28 P. Plan and Profile of Water and Sewer .........................................................................................28 Q. Phased Work................................................................................................................................29 R. Standard Notes............................................................................................................................29 S. Standard Details..........................................................................................................................29 3.7 DIGITAL DATA .................................................................................................................... 29 A. When Required............................................................................................................................29 B. CAD Files .....................................................................................................................................29 C. PDF Files..................................................................................................................................... 30 Engineering Design Manual September 2010 ii
TABLE OF CONTENTS PAGE Chapter 4: Water Distribution .................................................................. 31 4.1 SCOPE..................................................................................................................................31 A. General ........................................................................................................................................ 31 B. Minimums ................................................................................................................................... 31 4.2 HYDRAULIC REQUIREMENTS................................................................................................31 A. Design Flows ............................................................................................................................... 31 B. Distribution Piping Design.........................................................................................................33 C. Hydraulic Models........................................................................................................................34 4.3 WATER PIPE LAYOUT.......................................................................................................... 34 A. Plan View.....................................................................................................................................34 B. Profile .......................................................................................................................................... 37 C. Easements ...................................................................................................................................39 D. Corrosion Control .......................................................................................................................40 E. Miscellaneous.............................................................................................................................. 41 4.4 HYDRANTS ..........................................................................................................................41 A. Plan View..................................................................................................................................... 41 B. Profile ..........................................................................................................................................43 C. Miscellaneous..............................................................................................................................43 4.5 SERVICE CONNECTIONS AND WATER METERS ..................................................................... 43 A. Service Connection .....................................................................................................................44 B. Meter Placement ......................................................................................................................... 45 C. Sizing Meters...............................................................................................................................46 D. Cross Connection and Backflow Prevention.............................................................................. 47 4.6 INSTALLATION REQUIREMENTS .......................................................................................... 48 A. Excavation, Bedding and Backfill ..............................................................................................48 B. Acceptance Tests .........................................................................................................................50 C. Connections to the Water System ..............................................................................................50 Chapter 5: Wastewater Collection ............................................................. 53 5.1 SCOPE................................................................................................................................. 53 A. General ........................................................................................................................................ 53 B. Minimums ................................................................................................................................... 53 5.2 HYDRAULIC REQUIREMENTS............................................................................................... 53 A. Tributary Population .................................................................................................................. 53 B. Capacities..................................................................................................................................... 54 5.3 SEWER LAYOUT .................................................................................................................. 56 A. Plan View..................................................................................................................................... 56 B. Profile ..........................................................................................................................................58 C. Easement ..................................................................................................................................... 59 D. Miscellaneous.............................................................................................................................. 59 5.4 MANHOLES.........................................................................................................................60 A. Plan View.....................................................................................................................................60 B. Profile .......................................................................................................................................... 61 5.5 SERVICE CONNECTIONS ...................................................................................................... 62 A. Plan View.....................................................................................................................................62 B. Profile ..........................................................................................................................................63 Engineering Design Manual September 2010 iii
Page 1: Engineering Design Manual September
Page 5: TABLE OF CONTENTS PAGE Chapter 1: L
Page 9 and 10: TABLE OF CONTENTS PAGE Chapter 7: C
Page 11 and 12: TABLE OF CONTENTS PAGE L. Controls
Page 13 and 14: Chapter 1: Loudoun Water’s Role C
Page 15 and 16: Chapter 1: Loudoun Water’s Role A
Page 17 and 18: Chapter 1: Loudoun Water’s Role T
Page 19 and 20: Chapter 1: Loudoun Water’s Role 1
Page 21 and 22: Chapter 1: Loudoun Water’s Role c
Page 23 and 24: Chapter 1: Loudoun Water’s Role S
Page 25 and 26: Chapter 1: Loudoun Water’s Role F
Page 27 and 28: Chapter 2: Administration 2.1 Exten
Page 29 and 30: Chapter 2: Administration Developed
Page 31 and 32: Chapter 2: Administration C. Protec
Page 33 and 34: Chapter 2: Administration B. Bond R
Page 35 and 36: Chapter 3: Application and Plan Pre
Page 43 and 44: Chapter 4: Water Distribution Chapt
Page 45 and 46: Chapter 4: Water Distribution Resid
Page 47 and 48: Chapter 4: Water Distribution deten
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Chapter 4: Water Distribution B. Me
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Chapter 4: Water Distribution D. Cr
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Chapter 4: Water Distribution 7. Pi
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Chapter 4: Water Distribution 3. Wh
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Chapter 5: Wastewater Collection 2.
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Chapter 5: Wastewater Collection mo
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Chapter 5: Wastewater Collection B.
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Chapter 5: Wastewater Collection is
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Chapter 5: Wastewater Collection C.
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Chapter 5: Wastewater Collection Pr
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Chapter 5: Wastewater Collection Ma
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Chapter 6: Reclaimed Water Chapter
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Chapter 6: Reclaimed Water 5. Adjoi
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Chapter 6: Reclaimed Water 13. Valv
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Chapter 6: Reclaimed Water 2. Provi
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Chapter 6: Reclaimed Water B. Reuse
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Chapter 6: Reclaimed Water 6.6 Cros
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Chapter 6: Reclaimed Water A. Excav
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Chapter 6: Reclaimed Water 2. All l
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Chapter 7: Community Water Systems
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Chapter 8: Community Wastewater Sys
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Chapter 9: Sewage Pumping Stations
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Appendix A Appendix A: Application
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Checklist for Construction Plans PR
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Sewer - Plan View 1st sub. 2nd sub.
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Item Description Quantity Unit Unit
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Appendix B Appendix B: Wastewater C
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Sanitary Sewer Minimum Core Separat
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I. Introduction The Loudoun County
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C. Approval The easement plat and d
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Appendix D Appendix D: Community Sy
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Community Systems Design Review Pro
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Community Systems Design Review Pro
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Community Systems Project Initiatio
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Community Systems Construction Proc
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Community Systems Construction Proc
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Community Systems Preconstruction C
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I. Corrosion Control All storage ta
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i) The depths of soil samples colle
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Class 2 pipelines in moderately cor
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with cable cutters. Remove the insu
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4. Pipeline station numbers for wir
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a. name of the Corrosion Technician
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voltmeter with a test lead. Obtain
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Table 1 Cathodic Protection Test Da
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Table 3 Linear Continuity Calculati
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Table 5 Field Electrical Isolation
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Appendix F Appendix F: Construction
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Engineering Design Manual - Loudoun Water

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