Section_III_-_Sewer_Details.pdf
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- Solicitation number
- 115581
- Issued by
- Prince George's County, Maryland
About this file
This is a standard details specification document for the Washington Suburban Sanitary Commission (WSSC Water) in Maryland, specifically detailing sewer infrastructure components and installation methods. The document serves as a technical reference guide for the water and wastewater asset repair, rehabilitation, and replacement contract solicitation due September 21, 2026. The specification document contains 49 detailed standard drawings and technical specifications covering sewer infrastructure components including precast concrete manholes ranging from 48 to 96 inches in diameter, manhole frames and covers, cleanout installations, sewer house connections, drop connections, backwater valve assemblies, and pipe repair methodologies. The document provides standardized construction details and channelization plans for gravity sewer systems, force main to gravity sewer transitions, and load schedules for reinforced concrete and polyvinyl chloride (PVC) gravity sewer pipes. These specifications apply to water and wastewater asset work throughout Prince George's and Montgomery Counties, Maryland, with component nominal diameters up to and including thirty inches.
The specifications establish uniform technical standards that contractors must follow when executing task orders issued under the IDIQ and requirements contract. This document does not address pricing, contract terms, or award information but rather provides the technical framework and construction methodology requirements that successful contractors must implement when performing urgent repairs, rehabilitation, and replacement work on water and wastewater infrastructure. The detailed specifications ensure consistency, quality, and compatibility across the WSSC Water service areas and serve as binding technical requirements for all awarded contractors performing work under this competitively awarded contract.
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Text version
SECTION III
SEWER
DETAILS
SEPTEMBER 2021
Page S-1
Table of Contents WSSC STANDARD DETAILS
SECTION III - SEWER DETAILS
TABLE OF CONTENTS
TITLE NUMBER
48-inch Diameter Precast Concrete Manhole S/1.0
60-inch Diameter Precast Concrete Manhole S/1.1
72-inch, 84-inch and 96-inch Diameter Precast Concrete Manhole S/1.2
Precast Top Slab for 48-inch and 60-inch Diameter Precast Concrete Manholes S/1.3
Precast Concrete manhole with Fall Prevention System S/1.4
Precast Concrete Manhole Built Over Existing Sewer - Type II S/2.1
Precast Manhole Built On Existing PVC or DI Pipe S/2.2
Pipe to Existing Brick Manhole Connection For Using DIP, RCP or S/3.0 AWWA C900/905 PVC Only
Bentonite Application for Grouted Pipe to Manhole Connection S/3.01
Pipe to Manhole Connection for Deep Manhole S/3.02
Pipe to Manhole Connection for 12-inch and Smaller Pipes on Steep Grades S/3.03
Drop Manhole Type "A" Drop for Pipes 12-inch and Smaller S/3.1
Drop Manhole Type "B" Drop for Pipes 12-inch and Smaller S/3.1a
Inside Drop Connection for Precast Concrete Manholes S/3/1b
Inside Drop Connection for Precast Concrete Manholes (Fiberglass Drop Bowl) S/3.1c
Shallow Manhole Precast Concrete S/3.2
Plan of Typical Channelization of Mainline Sewer Manholes S/3.3
Manhole steps in Channels for Sewer 36-Inch and Larger S/3.4
Abandonment of Pipe at Manhole S/3.5
Manhole and Sewer Abandonment S/3.6
Page S-2
15-inch and Larger Sewer Pipe to Manhole Connection S/3.7
Adjusting Rings for 22-inch Opening Watertight Manhole Frame and Cover S/4.0
Adjusting Rings for 22-inch Opening Old Type Standard Manhole Frame and Cover S/4.1
Final Setting Anchoring 24-inch Watertight Frame and Cover to Manhole Wall S/4.2
Interim Setting Anchoring 24-inch Watertight Frame and Cover to Manhole Cone S/4.2a
24-inch Precast Concrete Manhole Transition Ring S/4.21
24-inch Precast Concrete Manhole Sloped Transition Ring S/4.22
Anchoring 30-inch and 36-inch Manhole Frame and Cover to Manhole Wall S/4.3
Standard Cleanout Installation for 4-inch and 6-inch Sewer House Connections S/5.0
Trenchless Cleanout System for Installation on Existing 4-inch and 6-inch Sewer S/5.0a House Connections
Cleanout Cover Assembly for 4-inch Cleanouts S/5.1
Cleanout (Lamphole) Cover Assembly for 6-inch Cleanouts S/5.2
4-inch and 6-inch Drop House Connections to Sewer Main S/6.0
4-inch and 6-inch Drop House Connections to Manhole S/6.1
4-inch and 6-inch Sewer House Connections S/6.2
4-inch and 6-inch PVC House Connections and Fittings S/6.3
4-inch and 6-inch DIP or PVC AWWA C900 House Connections and Fittings S/6.3a
4-Inch Radial Multiple Sewer House Connections Installation and Channelization S/6.4
Parallel Multiple 4-Inch Sewer House Connection Installation S/6.5
Transition Manhole Force Main to Gravity Sewer S/6.6
4-inch and 6-inch Sewer House Connection Within WSSC Right of Way S/6.7
4-inch and 6-inch Sewer House Connections Terminating at the Property Line S/6.8
Backwater Valve Assembly for 4-Inch Existing Sewer House Connections S/6.9
Backwater Valve (Lamphole) Cover Assembly S/6.9a
Page S-3
Replacement of Existing Backwater Valve Assembly in Existing Brick Manhole S/6.9b
Method of Repairing Cracked Concrete or Vitrified Clay Sewer Pipe S/7.2
Method of Repairing Cracked Concrete or Vitrified Clay Sewer Pipe S/7.2a
Load Schedule for R.C. Pipes S/8.0
Polyvinyl Chloride (PVC) Gravity Sewer Pipe Load Chart S/8.1
| 1 - S 1.0 |
| 2 - S 1.1 |
| 3 - S 1.2 |
| 4 - S 1.3 |
| 5 - S 1.4 |
| 6 - S 2.1 |
| 7 - S 2.2 |
| 8 - S 3.0 |
| 9 - S 3.01 |
| 10 - S 3.02 |
| 11 - S 3.03 |
| 12 - S 3.1 |
| 13 - S 3.1a |
| 14 - S 3.1b |
| 15 - S 3.1c |
| 16 - S 3.2 |
| 17 - S 3.3 |
| 18 - S 3.4 |
| 19 - S 3.5 |
| 20 - S 3.6 |
| 21 - S 3.7 |
| 22 - S 4.0 |
| 23 - S 4.1 |
| 24 - S 4.2 |
| 25 - S 4.2a |
| 26 -S 4.21 |
| 27 - S 4.22 |
| 28 - S 4.3 |
| 29 - S 5.0 |
| 30 - S 5.0a |
| 31 - S 5.1 |
| 32 - S 5.2 |
| 33 - S 6.0 |
| 34 - S 6.1 |
| 35 - S 6.2 |
| 36 - S 6.3 |
| 37 - S 6.3a |
| 38 - S 6.4 |
| 39 - S 6.5 |
| 40 - S 6.6 |
| 41 - S 6.7 |
| 42 - S 6.8 |
| 43 - S 6.9 |
| 44 - S 6.9a |
| 45 - S 6.9b |
| 46 - S 7.2 |
| 47 - S 7.2a |
| 48 - S 8.0 |
| 49 - S 8.1 |
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