winslamm v 9.4 control practice cost analysis/batch editor module 19 john voorhees, pe, ph pv &...

WinSLAMM v 9.4 Control Practice Cost Analysis/Batch Editor

Module 19

John Voorhees, PE, PHPV & Associates LLC

Metro Conservation Districts WinSLAMM Training

July 13-14, 2010

$$We will cover . . .

Cost Analysis Overview Sources of Cost Data Entering Cost Data Running the model with

Cost Data and Reviewing Cost Output


Cost Analysis Overview

Sources of Cost Data

Entering Cost Data Running the model

with Cost Data and Reviewing Cost Output


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 pre-determined 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.

What Does the Cost Analysis Program Do?

Cost Analysis OverviewPipe System Opportunity Cost for Grass

Swale Drainage System – cost spreadsheet v12.1b.xls

Design Parameters Segment I Segment II Segment III

Pipe Material 1 1 1

Pipe Diameter (in.) 1 1 1

Trench bottom width (in.) 26.2 26.2 26.2

Bedding depth (in.)

Trench slope 1 1 1

Trench top width (in.) 42.17 42.17 42.17

Backfill depth (in.)

Trench depth (ft.) 0.67 0.67 0.67

Select type of backhoe for trench excavation 1 1 1

Bedding material 1 1 1

Size of backhoe for backfill 1 1 1

Haul distance of backfill material (ft.) 1 1 1

Length of pipe with above conditions (ft.)

Inlets/Catchbasin andManholes/Junction boxes

Inlet inside diameter (ft.) 1 1 1

Invert depth of Inlet (ft.)

Number of inlets with above conditions

Manhole type 1 1 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 1 1 1

Total number of each unit

0 0 0

Curb and Gutter

Curb and gutter forms Wooden form

Curb and gutter type Straight Straight Radius

Width, in. 1 1 2

Total length of chosen curb, ft

Steel form

H=1, V=1 H=1, V=1 H=1, V=1

Corrugated Metal Pipe Corrugated Metal Pipe Corrugated Metal Pipe

H=1, V=1

Corrugated Metal Pipe Corrugated Metal Pipe

3/8 CY tractor loader/backhoe 3/8 CY tractor loader/backhoe

Crushed or screened bank run gravelCrushed or screened bank run gravelCrushed or screened bank run gravel

1 CY bucket

minimum haul minimum haul

1 CY bucket 1 CY bucket

minimum haul

4 4 4

3/8 CY tractor loader/backhoe

Crushed or screened bank run gravel

8 88 8

Brick, 4' I.D. Brick, 4' I.D. Brick, 4' I.D. Concrete blocks, 4' I.D.

24" 24" 30"

18" diameter, 100 lb 24" diameter, 400 lb 26" diameter, 475 lb 24" diameter, 350 lb


How are the Cost Values Normalized?

Total Present Worth = Capital Cost + Land Cost +

Present Worth of Annual Maintenance Cost

P

A AA A AA

1 2 43 n

((i+1)N-1) / (i*(1+i)N )


How are the Cost Values Normalized?

Uniform Series Worth = Annual Value of (Capital Cost + Land Cost) +

Annual Maintenance Cost

P

A AA A AA

1 2 43 n

(i*(1+i)N ) / ((i+1)N-1)


Edit and Save the Cost Template.csv File

Select the Cost Data File for a Model Run

Run the Program Review the Cost

Output

What is the General Cost Evaluation Process?

Sources of Cost Data Pre-Determined

Costs SEWRPC 1991 Cost

Report Costs Updated Using

ENR Cost Indices Cost Indices Available

for 20 Cities

Atla

nta,

GA

Bal

timor

e, M

DB

irmin

gham

, AL

Bos

ton,

MA

Chi

cago

, IL

Cin

cinn

ati,

OH

Cle

vela

nd, O

HD

alla

s, T

XD

enve

r, C

OD

etro

it, M

IK

ansa

s C

ity, M

OLo

s A

ngel

es, C

AM

inne

apol

is, M

NN

ew O

rlean

s, L

AN

ew Y

ork,

NY

Phi

lade

lphi

a, P

AP

ittsb

urgh

, PA

San

Fra

ncis

co, C

AS

eattl

e, W

A

St.L

ouis

, MO

0

2000

4000

6000

8000

10000

12000

Co

st In

dex

Val

ue

Construction Cost Index by City

1989

2005


Pre-Determined Costs for each practice

Costs Available for – • Wet Detention• Porous Pavement• Grass Swales• Street Cleaning• Catchbasins• Infiltration Trenches

Wet Detention Pond Costs - SEWRPC 1989

1

10

100

1000

10 100 1000

Wet Detention Basin Water Volume (1000 cf)

Ca

pit

al

Co

st

in 1

98

9 D

oll

ars

($

10

00

's)

Low Cost

Med. Cost

High Cost

O&M Cost

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


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


From the Main Menu go to the Options/Access Cost Data Summary Tab . . .


Control Practice Cost Tabs and

Summary Data Tab

Cost File Management

Summary Data Tab


Land Use CostsInterest Rate and

Project Life

Cost Index Selection

Summary Data Tab


Pre-Determined Cost Table

Pre-Determined Capital Cost

Range

Wet Detention Pond Cost Data


User-Defined

Cost Table

Maintenance Cost Data - Sediment Removal Costs

- Routine Maintenance Cost

Wet Detention Pond Cost Data

Total Unit Cost

per 1000 cubic feet

Land Area Multiplier


Total Unit Cost

Total Unit Cost

per 1000 cubic feet


Total Unit Cost Basis for User Defined Costs

Control Practice Total Unit Cost Units

Wet Detention Pond Sum of user-defined costs ($) / 1000 cf Pond Volume (datum to highest elevation)

Porous Pavement Sum of user-defined costs ($) / sf of Porous Pavement

Street Cleaning Street Cleaner capital cost ($) / Total curb-miles swept per year

Biofiltration Sum of user-defined costs ($) / cy Cut/Fill Volume

Catchbasin Cleaning Sum of user-defined costs ($) / Unit

Grass Swales Sum of user-defined costs ($) / lf of grass swale




Entering Cost Data Running the Model


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

Enter the Cost Data File Name in the Current File Data Window

1. Output on a Model Run Summary Tab

Total Control Practice Costs

1. Output on a Model Run Summary Tab

Enter the Cost Data File Name by checking the box and pressing the ‘Select Cost Data File’ Window

2. Output from a Set of .dat Files

Import the output file ‘DATSetOutput.CSV’ into Excel


Cost Output for each .dat file

Import the output file ‘DATSetOutputCostDetail.CSV’ into Excel


Cost Information for each control

practice



Additional Detention Pond Sediment and Biofilter Volume Information



Present Value and Annual Value Cost Information

$$We covered . . .





Questions?

winslamm v 9.4 control practice cost analysis/batch editor module 19 john voorhees, pe, ph pv &...

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