Sewer Master Planning with AutoCAD ® Map 3D and Autodesk® Storm and Sanitary Analysis

Dan LeightonPrincipal Consultant – DL Consulting

Sewer Master Planning with AutoCAD® Map 3D and Autodesk® Storm and Sanitary Analysis

1Anatomy of a sewer master plan

What is a sewer master plan? What are the steps involved?

2DemonstrationsCleaning up the pipe networkCreating sewershedsPolygon overlay to define loadsPerforming analysis w/ Autodesk Storm and Sanitary Analysis

3 Strategies for success

4 Closing thoughts

Agenda

What is a Sewer Master Plan?

Analyze current wastewater network’s ability to handle forecast future flows

Consider alternative growth and load scenarios

Create investment plans and alternatives

Steps to Sewer Master Planning

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Step-by-Step: Create Network

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Layout and connectivity of pipes

and manholes

Data about pipes and manholes

Clean and review data• Is topology correct?• Are flow directions correct?• Is the data complete?• Does data make sense?

2831 pipes2841 manholes

Step-by-Step: Define Sewersheds

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Sewershed Load Point

163 sewersheds

Example sewershed

Load point manhole

Step-by-Step: Define Loads by Sewershed

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Forecasts by zoning district

Overlayed on Sewersheds

Load estimates

117 zoning areas

Current and forecast % land use data for each zoning area

Step-by-Step: Perform Network Analysis

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Step-by-Step: Identify Facility Sizes

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Develop long term investment plan

Identify required facility sizes

for future loads

Step-by-Step: Develop Investment Plan

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Phase 1Phase 2Phase 3Phase 4

Step-by-Step Sewer Master Plan

Create sanitary sewer network

Define sewersheds and load points

Define current and future loads by

sewershed

Perform network flow analysis

Identify required facility sizes

for future loads

Develop long term investment plan

Demonstrations

1. Cleaning up the pipe network2. Creating sewersheds3. Polygon overlay to define loads4. Performing analysis w/ Autodesk Storm and Sanitary Analysis

Demo #1: Cleaning Up Pipe Network

Primary cleanup actions Import available sources into Map 3D Network cleanup using AutoCAD functionality Use Map network topology functions to ensure connectivity and proper

flow directions Additional cleanup using SSA Export to Shapefile Import into Autodesk Storm & Sanitary Analysis Analyze, and review errors Programmatic cleanup options Create LISP or Basic routines to walk the network, find errors, and

make corrections

Primary cleanup actions Import available sources into Map 3D Network cleanup using AutoCAD functionality Use Map network topology functions to ensure connectivity and proper

flow directions Additional cleanup using SSA Export to Shapefile Import into Autodesk Storm & Sanitary Analysis Analyze, and review errors Programmatic cleanup options Create LISP or Basic routines to walk the network, find errors, and

make corrections

Demo #2: Creating Sewersheds

Setup View parcel boundaries View sewer network

Defining sewersheds Identify outlet Add centroid that identifies the outlet Draw boundaries

Check topology Find missing centroids and errors in boundaries

Setup View parcel boundaries View sewer network

Defining sewersheds Identify outlet Add centroid that identifies the outlet Draw boundaries

Check topology Find missing centroids and errors in boundaries

Demo #3: Polygon Overlay to Define Loads

Access data sources Zoning polygons (contain land use % data) Sewershed polygons (labeled with load point) Overlay analysis Intersection analysis Add calculation for subpolygon areas Calculate loads Multiply load factors by % land use and subpolygon areas Sum loads for each load point

Access data sources Zoning polygons (contain land use % data) Sewershed polygons (labeled with load point) Overlay analysis Intersection analysis Add calculation for subpolygon areas Calculate loads Multiply load factors by % land use and subpolygon areas Sum loads for each load point

Flow Calculation Process

Zoning polygons (% landuse data)

Sewershed polygons(load point data)

Subpolygons (% landuse by load point)

Demo #4: Perform Analysis

Load data into Autodesk Storm and Sanitary Analysis Load pipes Load manholes Perform analysis Set parameters Perform run Review results Export data Select format Choose data to export

Load data into Autodesk Storm and Sanitary Analysis Load pipes Load manholes Perform analysis Set parameters Perform run Review results Export data Select format Choose data to export

Strategies for success

Test on small system to start

Establish efficient processesFor cleanup

For calculating flows

For modeling

Take advantage of features like “Load/Save”

Closing thoughts

Everything you need to complete a wastewater master plan!

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