WinSLAMM v 9.4 Control Practice Cost Analysis/Batch Editor

Transcription

1 WinSLAMM v 9.4 Control Practice Cost Analysis/Batch Editor Module 19 John Voorhees, PE, PH PV & Associates LLC Metro Conservation Districts WinSLAMM Training July 13-14, 2010

2 We will cover... Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the model with Cost Data and Reviewing Cost Output

3 We will cover... Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the model with Cost Data and Reviewing Cost Output

4 Cost Analysis Overview What Does the Cost Analysis Program Do? Calculates the cost of the control practices listed in a model run Allows you to compare the cost of different sets of practices Provides the option of applying either predetermined costs or user-defined costs Doesn t evaluate the cost reductions due to the use of control practices, ie, no asphalt pavement reduction determined if porous pavement is used.

5 Cost Analysis Overview Pipe System Opportunity Cost for Grass Swale Drainage System cost spreadsheet v12.1b.xls Design Parameters Segment I Segment II Segment III Pipe Material Corrugated Metal 1Pipe Corrugated Metal 1Pipe Corrugated Metal 1 Pipe Pipe Diameter (in.) Trench bottom width (in.) Bedding depth (in.) Trench slope H=1, V=1 1 H=1, V=1 1 H=1, V=1 1 Trench top width (in.) Backfill depth (in.) Trench depth (ft.) Select type of backhoe for trench excavation 3/8 CY tractor loader/backhoe 1 3/8 CY tractor loader/backhoe 1 3/8 CY tractor loader/backhoe 1 Bedding material Crushed or screened 1 bank run grave Crushed or screened 1 bank run grave Crushed or screened 1 bank run grave Size of backhoe for backfill 1 CY bucket 1 1 CY bucket 1 1 CY bucket 1 Haul distance of backfill material (ft.) minimum haul 1 minimum haul 1 minimum haul 1 Length of pipe with above conditions (ft.) Inlets/Catchbasin and Manholes/Junction boxes Inlet inside diameter (ft.) Invert depth of Inlet (ft.) Number of inlets with above conditions Manhole type Brick, 4' I.D. 1 Brick, 4' I.D. 1 Brick, 4' I.D. 1 Depth of manhole (ft.) Number of manholes with above conditions Frames and Covers Type Cast Iron frame - light traffic Cast Iron frame - heavy traffic Mass. State standard Diameter 18" diameter, 1001 lb 24" diameter, 4001 lb 26" diameter, 4751 lb Total number of each unit Curb and Gutter Curb and gutter forms Wooden form Curb and gutter type Straight Straight Radius Width, in. 24" 1 24" 1 30" 2 Total length of chosen curb, ft Steel form

6 Cost Analysis Overview How are the Cost Values Normalized? A A A A A A n P Total Present Worth = Capital Cost + Land Cost + Present Worth of Annual Maintenance Cost ((i+1) N -1) / (i*(1+i) N )

7 Cost Analysis Overview How are the Cost Values Normalized? A A A A A A n P Uniform Series Worth = Annual Value of (Capital Cost + Land Cost) + Annual Maintenance Cost (i*(1+i) N ) / ((i+1) N -1)

8 Cost Analysis Overview What is the General Cost Evaluation Process? Edit and Save the Cost Template.csv File Select the Cost Data File for a Model Run Run the Program Review the Cost Output

9 We will cover... Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the model with Cost Data and Reviewing Cost Output

10 Sources of Cost Data Cost Index Value Construction Cost Index by City Pre-Determined Costs SEWRPC 1991 Cost Report Costs Updated Using ENR Cost Indices Cost Indices Available for 20 Cities Atlanta, GA Baltimore, MD Birmingham, AL Boston, MA Chicago, IL Cincinnati, OH Cleveland, OH Dallas, TX Denver, CO Detroit, MI Kansas City, MO Los Angeles, CA Minneapolis, MN New Orleans, LA New York, NY Philadelphia, PA Pittsburgh, PA San Francisco, CA Seattle, WA St.Louis, MO

11 Sources of Cost Data Wet Detention Pond Costs - SEWRPC 1989 Pre-Determined Costs for each practice Costs Available for Wet Detention Porous Pavement Grass Swales Street Cleaning Catchbasins Infiltration Trenches Capital Cost in 1989 Dollars ($1000's) Wet Detention Basin Water Volume (1000 cf) Low Cost Med. Cost High Cost O&M Cost

12 Sources of Cost Data User-Defined Costs for Each Practice Enter Items that Define the Practice Select Unit Enter Cost per Unit Enter Quantity Program Calculates Cost Program Determines Total Unit Cost Enter Routine Maintenance Cost

13 We will cover... Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the model with Cost Data and Reviewing Cost Output

14 Edit and Save the Cost Template.csv File On the Summary Data Page Enter project life and interest rate information Enter Land Costs Select Cost Index For Each Control Practice Select either Pre-Determined or User-Defined Costs For Pre-Determined Costs, select Cost Range For User-Defined Costs, enter Cost Data Enter Land Use Multiplier Re-name and Save Cost Data File

15 Edit and Save the Cost Template.csv File From the Main Menu go to the Options/Access Cost Data Summary Tab...

16 Edit and Save the Cost Template.csv File Summary Data Tab Control Practice Cost Tabs and Summary Data Tab Cost File Management

17 Edit and Save the Cost Template.csv File Summary Data Tab Interest Rate and Project Life Land Use Costs Cost Index Selection

18 Edit and Save the Cost Template.csv File Pre- Determined Cost Table Wet Detention Pond Cost Data Pre- Determined Capital Cost Range

19 Edit and Save the Cost Template.csv File Wet Detention Pond Cost Data User- Defined Cost Table Total Unit Cost per 1000 cubic feet Maintenance Cost Data - Sediment Removal Costs - Routine Maintenance Cost Land Area Multiplier

20 Edit and Save the Cost Template.csv File Total Unit Cost Total Unit Cost per 1000 cubic feet

21 Edit and Save the Cost Template.csv File Total Unit Cost Basis for User Defined Costs Control Practice Wet Detention Pond Porous Pavement Street Cleaning Biofiltration Catchbasin Cleaning Total Unit Cost Units Sum of user-defined costs ($) / 1000 cf Pond Volume (datum to highest elevation) Sum of user-defined costs ($) / sf of Porous Pavement Street Cleaner capital cost ($) / Total curb-miles swept per year Sum of user-defined costs ($) / cy Cut/Fill Volume Sum of user-defined costs ($) / Unit Grass Swales Sum of user-defined costs ($) / lf of grass swale

22 We will cover... Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the Model with Cost Data and Reviewing Cost Output

23 Two Types of Cost Output 1. File Run - Capital, Land, and Maintenance Costs on the Summary Tab of a WinSLAMM Model Run 2. Group File Run - Capital, Land, and Maintenance Costs included with the output when you run a set of.dat files using the Batch Processor

24 1. Output on a Model Run Summary Tab Enter the Cost Data File Name in the Current File Data Window

25 1. Output on a Model Run Summary Tab Total Control Practice Costs

26 2. Output from a Set of.dat Files Enter the Cost Data File Name by checking the box and pressing the Select Cost Data File Window

27 2. Output from a Set of.dat Files Import the output file DATSetOutput.CSV into Excel Cost Output for each.dat file

28 2. Output from a Set of.dat Files Import the output file DATSetOutputCostDetail.CSV into Excel Cost Information for each control practice

29 2. Output from a Set of.dat Files Import the output file DATSetOutputCostDetail.CSV into Excel Additional Detention Pond Sediment and Biofilter Volume Information

30 2. Output from a Set of.dat Files Import the output file DATSetOutputCostDetail.CSV into Excel Present Value and Annual Value Cost Information

31 We covered... Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the model with Cost Data and Reviewing Cost Output Questions?