MetCom Design Manual - 2019 Update

MetCom's 2019 Design Manual, Technical Specifications & Standards for Construction Details (Design Manual) is broken down into Sections so specific portions to be downloaded as needed.

The Design Manual is also available in its entirety; please click here for the full download.



Design Manual updates can be found on this Web Page as they become available; check back periodically to ensure you have the most up-to-date information to the MetCom Design Manual.   

Updates will no longer be e-mailed directly to Design Manual Recipients who have previously downloaded a Design Manual from MetCom's old website.

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2019 Design Manual Update Memorandum

Design Manual Update Summary

Transitional (Grandfathering) Provisions

Please click here to review MetCom's Transitional (Grandfathering) Provisions in order to determine which Design Manual to use for your project.  If your project meets the criteria to utilize the old Design Manual, please click here.

Design Manual Updates

Public Works Agreement effective July 1, 2020

Design Manual (Effective July 11, 2019)

TOC Table of Contents

Chapter 1 General Information

Chapter 2 Water Main Design

Chapter 3 Water Pumping Stations, Well Houses & Water Tower Design

Chapter 4 Sewer Main Design

Chapter 5 Wastewater Pumping Station Design


Table of Equivalent Dwelling Units (EDUs)


Review Checklist


Public Works Agreement


Construction Permit


As-Built Requirements

Design Manual Update Policy


Standard Cost Tables for Engineer Estimates


Solar Battery Backup Specification


List of Approved Materials & Manufacturers

Standard Construction Details

Standard Construction Details - General


G-1 Buttresses for Tees

G-2 Buttresses for Caps and Horizontal Bends


G-3 Buttresses for Vertical Bends


G-4 Anchorages for Vertical Bends


G-5 Witness Post


G-6 Typical Bedding and Backfill for Pipes and Appurtenances


G-7 Casing Assembly Using Prefabricated Pipe Supports


G-8 Steel Sleeve Under Roadway Field Manufactured Supports


G-9 Method of Cutting and Repairing Bituminous Driveways


G-9A Typical Repair of Bituminous Surfaces


G-10 Typical Pipe Anchor, Pipes 6” through 12”


G-11 Typical Method for Strapping Valve or Appurtenance to Main


G-12 Method of Cutting and Repairing Concrete Driveways


G-13 Fitting Anchor


G-14 Blank


G-15 Blank


G-16 Blank


G-17 Typical Concrete Encasement, Concrete Cradle


G-18 Marker Stakes for Manholes, Valve Boxes, Cleanouts and other Appurtenances


G-19 Typical Chain Link Fence, 8 ft. Height


G-20 Typical Chain Link Gate, 8 ft. Height


G-21 Typical Chain Link Fence, 8 ft. Height


G-22 Typical Chain Link Gate, 8 ft. Height


G-23 Typical Service Entrance and Parking

G-24 Typical Station Address Sign


G-25 Typical Fence Abutting Driveway


G-26 Typical Tapping Sleeve and Valve

Standard Construction Details - Water

W-1 Fire Hydrant Setting

W-2 In-Line Water Valve Setting

W-3 Mainguard® Blow-off Hydrant

W-4A Typical Installation of Single Meter Setting for Domestic Use Without Sprinklers

W-4B Typical Installation of Single Meter Setting for Domestic Use With Sprinklers


W-5 Typical Installation of Twin Meter Setting for Domestic Use

W-6 Typical Meter Setting, Meters 1 ½” and 2”

W-7 Blank

W-8 Standard Frames and Covers for Water Meters and Valve Vaults

W-9 Water Service Connection, 1 1/4", 1 ½”, 2” Setting

W-10 Typical Installation of Radio Read Meter MIU and Antenna

W-11 Typical Installation and Wiring of MIU to ECR Register

W-12 Blank

W-13 Shared Domestic Supply and Sprinkler Connection

W-14 Blank

W-15 Post Indicator Valve

Standard Construction Details - Typical Potable Water Pumping Station

WP-1 Typical Water Pumping Station Pumping to System or Tower


WP-2 Typical Water Pumping Station Pumping to System or Tower Section A-A

Standard Construction Details - Gravity Sewer

S-1 Shallow Manhole


S-2 Standard Precast Line Manhole


S-3 Inside Drop for Existing Manhole


S-4 Drop Manhole for New Construction


S-5 Manhole Built Over Existing Sewer Main (12" or Smaller)


S-6 Manhole Channels (Typical)


S-7 Standard Heavy Traffic Manhole Frame and Cover


S-8 Watertight Manhole Frame and Cover


S-9 Blank


S-10 Sewer Service Connection, Single Setting


S-11 Sewer Service Connection, Twin Setting (Retrofit Only)


S-12 Deep Sewer Service Connections


S-13 Smooth PVC Gasketed Tee Pipe Saddle for Sewer Mains up to 12”


S-14 Smooth PVC Gasketed Wye Pipe Saddle for Sewer Mains up to 12"


S-15 Connection to Large Diameter Sewer > 12"


S-16 Single Service Connection to Existing Large Diameter Sewer > 12"


S-17 Cleanout Cap


S-18 Standard Cleanout Cover


S-19 Sewer Manhole Abandonment (Typical)


S-20 Sewer Main Abandonment at Manhole


S-21 Manhole Vacuum Testing

Standard Construction Details - Low Pressure Sewer

P-1 Low Pressure Sewer Service Connection Assembly


P-2 Low Pressure Sewer Service Connection Assembly, Wet Tap


P-3 Low Pressure Sewer Detail, In-Line Cleanout Flushing Connection


P-4 Low Pressure Sewer Detail, In-Line Flushing Connection in Traffic Areas, Sewer less than 4"


P-5 Low Pressure Sewer Detail, Terminal Cleanout Flushing Connection


P-6 Low Pressure Sewer Detail, Terminal Flushing Connection in Traffic Areas, Sewer less than 4"


P-7 Low Pressure Sewer Detail, Valve Box Setting 3” and Smaller


P-8 Low Pressure Sewer Detail, Air Relief / Vacuum Valve Setting


P-9 Low Pressure Sewer Detail, Grinder Pump Typical Installation


P-9A Low Pressure Sewer Detail, Duplex Grinder Pump Typical Installation


P-10 Low Pressure Sewer Connection to New or Existing Gravity Sewer Service


P-11 Low Pressure Sewer Connection to Existing Gravity Manhole


P-12 Type “A” Transition Manhole Force Main to Gravity Sewer


P-13 Type “B” Transition Manhole Force Main to Gravity Sewer

Standard Construction Details - Typical Wastewater Pumping Station

PS-1 Typical Plan for Wastewater Pumping Station


PS-2 Wastewater Pumping Station Wet Well and Dry Well Plan


PS-3 Wastewater Pumping Station Wet Well and Dry Well Plan Section A-A


PS-4 Wastewater Pumping Station Site Plan


PS-5 Typical Plan for Suction Lift and Submersible Wastewater Pumping Stations


PS-6 Submersible Wastewater Pumping Stations Sections B-B


PS-7 Suction Lift Wastewater Wet Well Plan


PS-8 Suction Lift Wastewater Wet Well Section C-C


PS-9 Typical Site Plan for Suction Lift and Submersible Wastewater Pump Station


PS-10 Submersible Wastewater Pumping Station Wet Well and Valve Vault


PS-11 Submersible Wastewater Pumping Station Wet Well and Valve Vault Section D-D


PS-12 Submersible Wastewater Pumping Station Site Plan


PS-13 Typical Plan for Package Wastewater Pumping Station


PS-14 Package Wastewater Pumping Station Wet Well and Dry Well Plan


PS-15 Package Wastewater Pumping Station Wet Well and Dry Well Plan Section E-E


PS-16 Package Wastewater Pumping Station Site Plan

Technical Specifications

01107 Construction Stakeout

01108 Mobilization

02012 Test Pits


02050 Removal or Abandonment of Existing Facilities


02110 Clearing and Grubbing


02240 Aggregate Backfill


02250 Trench Excavation, Backfill and Compaction


02300 Boring and/or Jacking Pipe

02310 Directional Boring of Pressure Sewer, Water Mains and Gravity Sewers


02400 Tunneling

02550 Temporary Bypass for Water Services


02512 Dewatering


02551 Water Main Installation and Chlorination


02552 Water Valves and Appurtenances


02553 Water Services, Water Meter Settings and Vaults


02554 Fire Hydrants


02555 Production Wells


02561 Gravity Sanitary Sewer and House Connections


02562 Sanitary Sewer Manholes


02563 Sanitary Sewer Force Mains


02565 Sanitary Sewer Rehabilitation


02566 Low Pressure Sewer Systems


02800 Restoration


02820 Turf Establishment


02830 Sodding


02850 Soil Stabilization Matting


02870 Fences


03200 Concrete Reinforcement


03300 Cast-in-Place Concrete


03400 Precast Concrete Utility Structures


03500 Flowable Fly Ash


04100 Mortar


04200 Brick Masonry


05500 Miscellaneous Metals


11307 Sewage Pumping Units

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