2011 Hanover County Water & Sanitary Sewer Standards

Please forward any comments or suggestions regarding this update to manannery@co.hanover.va.us . Be sure to include in your comments the suggested correction necessary. Thank you.

Index of Substantial and Noteworthy Text and Detail Changes

Note: All topics listed below are Portable Document Files which can only be viewed with the Adobe Acrobat Reader program. If you require the free reader, see link at bottom of page.
 

Chapters 1-11 Complete

Chapter 12 - All Details

Table of Contents

Section   1     Design Standards and Procedures

Section   2     Construction Specifications

Section   3     Material Specifications

Section   4     Approved Materials and Manufacturers

Section   5     Developers Checklist for Utility Projects

Section   6     Engineers Checklist for Water and Sewer Plans

Section   7     Site Plan Requirements

Section   8     Utility Master Plan Checklist

Section   9     Dedicated Capital Assets List

Section   10     Construction Permit and Backflow Prevention Device Form

Section   11     Construction Record

Section 12     Details

• BLK-1 – Blocking Detail Horizontal Bends
• BLK-2 – Blocking Detail Tees
• BLK-3 – Blocking Detail Plugs, Caps, and Hydrants
• BLK-4 – Blocking Detail Lower Vertical Bends
• BLK-5 – Blocking Detail Upper Vertical Bends
• CAS-1 – Casing Pipe Requirements
• CAS-2 – Alternate Casing Detail -- Sewer
• CAS-3 – Casing Detail Method for Gravity Sewer Lines
• CAS-4 – Casing Detail for Waterlines and Sewer Force Mains
• CAS-5 – Pipe Encasement Detail
• DES-1 – Hydraulic Analysis Form for Sanitary Sewer Design
• DES-2 Sheet 1 of 2– Standard Sewer and Water Notes
• DES-2 Sheet 2 of 2– Standard Sewer and Water Notes
• DES-3 – Standard Sewer and Water Notes
• FIR-1 – Typical Fire Hydrant Detail
• FIR-2 – Typical Fire Hydrant Detail
• FIR-3 – 2" or Smaller Double Detector Check Assembly and Vault
• FIR-4 – 3" or Larger Double Detector Check Assembly and Vault
• FIR-5 – Private Central Fire System Plan View – 1 of 3
• FIR-6 – Private Central Fire System Fire Meter Assembly and Vault – 2 of 3
• FIR-7 – System Interconnection 3" or Larger Double Check Assembly and Vault – 3 of 3
• FIR-8 – Typ. Single Family Residential Fire Line System with Domestic Service Line
• MAN-1 Sheet 1 of 2– Manhole Sizing and Minimum Angle Table
• MAN-1 Sheet 2 of 2 – Manhole Sizing and Minimum Angle Table
• MAN-2 – Standard Precast Concrete Manhole Sewers 8" to 24"
• MAN-3 – 60", 72", 84" and 96" I.D. Manhole - I
• MAN-4 – 60", 72", 84" and 96" I.D. Manhole - II
• MAN-5 – Standard Precast Concrete Manhole III 60", 72", 84" and 96" I.D
• MAN-6 – This Detail Removed from Standards in 2004
• MAN-7 – 1'4" or 2'-0" Cone (Type 1)
• MAN-8 – Standard Eccentric Cone
• MAN-9 – Standard Invert Details
• MAN-10 – Standard Outside Drop Connection
• MAN-11 – Standard Manhole Frame & Cover
• MAN-12 – Watertight Manhole Frame & Cover
• MAN-13 – Standard Butterfly Valve Manhole (16" and Larger)
• MAN-14 – Typical Manhole Step
• MAN-15 – 1’ - 4" Flat Top Cone (Type 2)
• MAN-16 – Standard Inside Drop Connection
• MAN-17A – Monitoring Manhole
• MAN-17B – Wastewater Access and Monitoring Chamber for Retrofit Applications Only
• MAN-18 – Vandal Proof Manhole Frame & Cover
• MAN-19 – Abandonment of Manholes
• MET-1 – Typical Water Meter Connection for 3/4" and 1" Services (5/8" and 1" Meters)
• MET-2 – Plastic Meter Box (5/8" and 1" Meters)
• MET-3 – Cast Iron Meter Box (Type 1) (For 1" Meters)
• MET-4 – Cast Iron Meter Box (Type 2) (5/8" Meters)
• MET-5 – This Detail Removed from Standards in 2011
• MET-6 – 1-1/2" or 2" Meter Setting
• MET-7 – 1-1/2" & 2" Meter Box
• MET-8 – 3" or 4" Meter Setting
• MET-9 – This Detail Removed from Standards in 2011
• MET-10 – Vault Detail for 3" and 4" Water Meters
• MET-11A – Water Service Installation Detail for 5/8" or 1" Meters
• MET-11B – Water Service Installation Detail for 1 1/2" and 2" Meters
• MET-11C – 1-1/2" or 2" Meter 4", 6", or 8" Detector Settings
• MET-12 – 2" Compound Meter Setting
• PAV-1 – Typical Section for Repair of "Primary" Roadway Shoulders or Other Unpaved Traveled Areas for Water & Sewer Line Crossings
• PAV-2 – Typical Section for Repair of Open Cut After Placement of Sewer in Surface Treated Road Where a Base (Except Concrete or Plant Mix) is Present
• SEW-1 – Bedding for DIP Sewer Pipe
• SEW-2 – Bedding and Backfill Detail for Plastic Sewer Pipe
• SEW-3 – Sheet 1 of 2 – Air Vent
• SEW-3 – Sheet 2 of 2 – Sewer Manhole Vent
• SEW-4 – House Connection Details
• SEW-5 – Sewer Anchorage in Slopes Greater Than 20 %
• SEW-6 – Force Main Discharge
• SEW-7 – Inserta Tee
• SEW-8 – Kor-N-Tee
• SEW-9 – Sheet 1 of 2 – Clay Dam Detail
• SEW-9 – Sheet 2 of 2 – Clay Dam Detail Plan View
• SEW-10 – Vacuum Test (ASTM C 12444) for Concrete Sewer Manholes
• SEW-11 – Property/Easement Line Cleanout Detail
• SEW-12 – Sanitary Sewer Cleanout - (Traffic Rated)
• TST-1 – Allowable Infiltration/Exfiltration Based on 50 gal./in. dia./mile/24 hrs
• TST-2 – PVC Pipe Air Test Table based on formulas from UNI-B-6-90
• TST-3 – Allowable Leakage Table - Water lines based on formulas from AWWA specifications
• TST-4 – Test Station Box
• WAT-1 – 1" Air Release Valve
• WAT-2 – 2" Air Release Valve Assembly
• WAT-3 – Flushing Hydrant (for 4" and 6" Waterlines)  
• WAT-4 – Typical 4" and Larger Blow-off (for Waterlines 8" and Greater in Diameter)
• WAT-5 – Small Valve Box
• WAT-6 – Lowering Water Main or New Installation
• WAT-7 – Discharge Flow Rates for Flushing
• WAT-8 – Neutralization Station (Dechlorination)
• WAT-9 – Allowable Deflections for Water Pipe
• WAT-10 – Typical Waterline Creek Crossings
• WAT-11 – Water Quality Monitoring Station
• WAT-12 – Valve Key Extension
• WAT-13 – Double Check Valve Assembly for Isolating New Mains During Testing