Print this page Gravity Sewer Design
Jorge Acevedoo, PE
Course Outline
This course material is recommended for 8 PDH credits and includes the following:
- Introduction
- Gravity Sanitary Sewer System
- Design Capacity
- Wastewater Flow Calculations
- Hydraulic Design
- Structural Design
- Additional Design Criteria
- Installation and Testing
- Summary
This course includes
a multiple choice quiz at the end,
Learning Objective
At the end of the course, the student will learn:
- About State of Florida rules and regulation for design of wastewater collection systems;
- About Miami-Dade rules and regulations for the design of gravity collection systems;
- How to calculate minimum, average and peak flows;
- How to determine a tributary area;
- How to establish a design period for gravity sewer systems;
- How to approach a wastewater flow calculation;
- How to prepare a population estimate;
- How to determine wastewater flows based on land uses;
- About infiltration and inflow;
- How to determine flow loading base on Miami-Dade Code;
- About hydraulic types of flows;
- How to apply Manning Equation for gravity sewer design;
- How to prepare a layout of the gravity collection system;
- Understand the use of different appurtenances;
- How to select pipe material for gravity sewer systems;
- Advantage and disadvantage for the different pipe material;
- About corrosion resistance and protection in sewer lines;
- About location of sewer to streams;
- About aerial crossings;
- About protection of water supplies;
- About trenching;
- About bedding and its classes;
- About soil classification and backfill; and
- About testing procedures for gravity sewer collection systems.
Intended Audience
This course is intended for civil engineers, environmental engineers and other design and construction professional willing to increase the knowledge about design of gravity sanitary collection systems.
Benefit to Attendees
This course provides standards, policy, and procedures for the hydraulic design of sanitary gravity sewer systems.
Course Introduction
Specification for the design, materials, and installation requirements of the gravity sanitary sewer system has been published by many utilities, cities, counties, and states nationwide; each publication has been developed according to a set of particular conditions, rules and regulations specifically for each study area.
Course Content
In this lesson, you are required to download and study the following course content in PDF format:
Please click on
the above underlined hypertext to view, download or print the document for your
study. Because of the large file size, we recommend that you first save the
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As ...", and then open the file in Adobe Acrobat Reader. If you still experience
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Course Summary
Specification for the design, materials, and installation requirements of the gravity sanitary sewer system has been published by many utilities, cities, counties, and states nationwide.
Sanitary sewer capacities should be designed for the estimated ultimate tributary area population. The service life, defined as the operational life of a sewage facility, should exceed the design period of the facility, provided it is designed, constructed and maintained properly.
The criteria for hydraulic design sewer pipe is evaluated based on the size and type of the pipe, design period, design depth and peak flows.
Miami-Dade County has developed and implemented a sewage flow study and it has been adapted into Miami-Dade Code under the Section 24-43.1(5)
In general, the design of gravity sanitary sewers systems shall be based on steady uniform flow analysis employing the Manning equation.
Compliance with the State Rules and Regulations, in Miami-Dade County, gravity sanitary sewer systems shall be designed in accordance with the minimum standards for design and construction published by MD-WASD and approved by the MD-RER.
Related Links
For additional technical information related to this subject, please visit the following websites:
Alternative Wastewater Collection Systems (1991). EPA 625 1-91 024. US EPA. National Service Center for Environmental Publications. www.nepis.epa.gov
Concrete Pipe & Box Culvert Installation (2007). American Concrete Pipe Association. 1303 West Walnut Hill Lane, Suite 305, Irving, Texas 75308-3008. www.concrete-pipe.com
Donation Standard Specification and Details for Design and Construction. Donation Wastewater Gravity Systems, UC-250, UC-290, UC-300, UC-310, UC-320, UC-320, UC-350, and UC-370. Miami-Dade Water and Sewer Department. 3071 SW 38th Ave, Miami, FL 33146. www.miamidade.gov/water/design-construction-standards.asp
More references are included in the course content.
Quiz
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.
DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.
