Habitat For

Humanity

Matt Selvey

HFH Members

Web / Architectural Team

– Bill Cox– Lisa Major– Nick Henthorn– David Koenig– Keshav Prabhu

Energy Efficiency Team– Donnie Austin– Doug Crook– Rosann Magnifico– Brent Phillips– Matt Selvey– Brian Waller

Matt Selvey

Habitat for Humanity

Home Owners

Energy Team Web/Arch Team

Energy TeamMatt Selvey

Architecture / Web Team

Bill Cox Lisa Major Nick Henthorn

David Koenig Keshav Prabhu

Bill Cox

Web Team Objectives

Increase access to team deliverables Provide one location for all resources Gather feedback from Habitat staff and

volunteers to maximize effectiveness of the Web Project

http://epics.ecn.purdue.edu/hfh/web_project

Bill Cox

Enter Guide

Go to Web

Habitat Home Efficiency, Selection and Construction Online Resource

Bill Cox

http://epics.ecn.purdue.edu/hfh/web_project

Architectural Team Objectives

Materials list program POS and database program

Keshav Prabhu

Program Attributes

Capabilities– Many different styles of homes– Cost comparison between vendors

Limitations– Electrical, plumbing, and HVAC

Keshav Prabhu

House Number = 1040-3a4# of Bedrooms = 3# of Full Bathrooms (sink + tub + toilet) = 1# of Half Bathrooms (sink + toilet) = 0# of Hallways (can be zero) = 1Are the Washer & Dryer in a utility room? (as apposed to a small closet) (yes or no) = yesDoes the dining room require its own lighting? (yes or no) = yesHow many closets/utility rooms have their own lights in them? 0square feet = 1040House Length (porch separate) = 40House Width (gable end) (porch separate) = 26Porch external to house? (protrudes from house?) (yes/no) (use for next two questions) = yesPorch Length = 5.33Porch Width = 16.42# of exterior corners on the house with vinyl siding on them = 4# of interior corners on the house with vinyl siding on them = 0# of exterior doors = 2# of exterior windows (full size) = 8# of exterior windows (small size) = 1of the windows listed above, how many pairs of windows are there? = 1# of courses of foundation block 4

Materials List Input

Keshav Prabhu

Materials List Output

Sections– Quantity buy– Quantity O/H (out of house)– Material description– Piece cost– Total cost

Keshav Prabhu

Inventory POS and Database

Purpose– Track inventory in the

Habitat resale store– Track material donors– Provide user with point-of-

sale terminal functionality

Status– Gathering requirements– Creating tables in

database

Edit Donor Information

Edit Store StockResale Store Volunteer

Ring Up Customer

Keshav Prabhu

Resale Store POS and Database

Resale store sells donated building materials not used by Habitat

Inventory tracking and cash register system is required

System must be intuitive so volunteers can be quickly trained

Keshav Prabhu

POS and Database Overview

Keep track of donated materials– Donor name– Item donated– Quantity– Cost estimation

PC used to run database and cash register applications

– Cash register application will modify database and track sales– Handheld barcode reader – Label printer

Keshav Prabhu

Energy Team

Donnie Austin Doug Crook

Matt Selvey Brian Waller

Rosann Magnifico Brent Phillips

Doug Crook

Energy Team Objectives

Five basic analyses were performed to reduce energy costs:

– Cellulose vs. Fiberglass– Caulking wall joints– Attic fan– Window film– Future cost

Doug Crook

Cellulose vs. Fiberglass

Assumptions– R-values

Cellulose: 38-40 Fiberglass: 31

– Costs Cellulose: $0.43

(labor + material) Fiberglass: $0.41

(material)

Payback period– Approximately 1.5 years

Doug Crook

Annual Savings

11.5

12

12.5

13

13.5

14

875 987 1008 1027 1032 1040

Square Ft

Sa

vin

gs

($

/ye

ar)

Caulking Wall Joints

Assumptions– Reduces air

infiltration by 15% Infiltration through

walls accounts for 20% of total infiltration

No reduction in R-value of insulation

$30 to caulk a house

Results– Average Savings = $10.27

Caulking Savings per Year

9

9.2

9.4

9.6

9.8

10

10.2

10.4

10.6

10.8

875 957 966 1008 1040 1301

House Size (ft^2)

Savi

ngs

($/y

ear)

Doug Crook

Attic Fan Analysis

Assumptions– Flat roof (no tilt), no solar

absorption– Ambient temperature

Results– Reduction of air conditioning

energy costs = $14.50– Operating cost = $30– Modification not recommended

Doug Crook

Window Film Analysis

U-Value = 0.45 Btu/hr-ft2-F U-Value dependent upon

distance between window and film

Simulated from Nov 1 to March 1

$8.97 per roll of film

Average of $27 per home (3 rolls)

Reoccurring cost each year

Doug Crook

House Savings ($/yr)875_2A1 0957_2A1 18966_3A1 12

1008_3A1 61040_3A1 21301_4A1 14

Information provided by ASHRAE Handbooks, Manco Consumer Hotline 800-321-0253 and www.3M.com

Future Cost Analysis:

Natural gas price outlook: .2% cost decrease per year

Electricity price outlook: .5% cost decrease per year

Electricity consumption outlook: 1.1% increase per year

Source of information:

www.eia.doe.gov linked from www.energy.gov

Doug Crook

Future Cost Analysis:

Typical Habitat for Humanity house showing total analysis (both electrical and natural gas combined) for current and future energy costs.

875 Total Energy Costs (estimates)

635

640

645

650

655

660

665

670

675

680

685

2000 2005 2010 2015 2020

20 year projection

tota

l cos

t

Doug Crook

Habitat for Humanity

Web Team– Home Selection guide– Home Construction guide– Home Efficiency Options

Architectural Team– Plans added to Floor Plan Selection Guide– Material lists program

Energy Team– Recommended Efficiency options:

Caulking Wall Joints Cellulose Insulation

Future Plans

Web team– Upgrade deliverables– Feedback– Link to Habitat’s web site

Architectural team– Home plans– POS database

Energy team– Efficiency options– National involvement

Rosann Magnifico

Habitat For

Humanity

Rosann Magnifico