Sewer Master Planning with AutoCAD Map 3D and Autodesk Storm and Sanitary Analysis. Dan Leighton Principal Consultant DL Consulting

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1 Sewer Master Planning with AutoCAD Map 3D and Autodesk Storm and Sanitary Analysis Dan Leighton Principal Consultant DL Consulting

2 Sewer Master Planning with AutoCAD Map 3D and Autodesk Storm and Sanitary Analysis Agenda 1 Anatomy of a sewer master plan What is a sewer master plan? What are the steps involved? Demonstrations 2 Cleaning up the pipe network Creating sewersheds Polygon overlay to define loads Performing analysis w/ Autodesk Storm and Sanitary Analysis 3 Strategies for success 4 Closing thoughts

3 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

4 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

5 Step-by-Step: Create Network Create sanitary sewer network Layout and connectivity of pipes and manholes Define sewersheds and load points Define current and future loads by sewershed Data about pipes and manholes Perform network flow analysis Identify required facility sizes for future loads Develop long term investment plan Clean and review data Is topology correct? Are flow directions correct? Is the data complete? Does data make sense?

6 2831 pipes 2841 manholes

7 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

8 163 sewersheds Example sewershed Load point manhole

9 Step-by-Step: Define Loads by Sewershed Create sanitary sewer network Forecasts by zoning district Define sewersheds and load points Define current and future loads by sewershed Perform network flow analysis Overlayed on Sewersheds Identify required facility sizes for future loads Load estimates Develop long term investment plan

10 117 zoning areas Current and forecast % land use data for each zoning area

11 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

12 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 Identify required facility sizes for future loads Develop long term investment plan

13 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 Phase 1 Phase 2 Phase 3 Phase 4 Develop long term investment plan

14 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

15 Demonstrations 1. Cleaning up the pipe network 2. Creating sewersheds 3. Polygon overlay to define loads 4. Performing analysis w/ Autodesk Storm and Sanitary Analysis

16 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

17 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

18 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

19 Flow Calculation Process Zoning polygons (% landuse data) Sewershed polygons (load point data) Subpolygons (% landuse by load point)

20 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

21 Strategies for success Test on small system to start Establish efficient processes For cleanup For calculating flows For modeling Take advantage of features like Load/Save

22 Closing thoughts Everything you need to complete a wastewater master plan!

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