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This project focuses on developing energy-efficient, affordable green home designs while providing training for homeowners and construction professionals. Key outcomes include collaborating with Habitat for Humanity and utilizing LEED research to optimize sustainable practices. Our goals encompass accommodating energy-efficient features, analyzing building materials, and promoting best practices for environmentally-friendly construction. Training methodologies will be implemented post-construction, with a comprehensive approach that addresses homeowner education and practical maintenance techniques in line with green rating systems.
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Biotown Staff: James Caraher Justin Mauck Sean McCaffrey Nathaniel Pedue Louis Ruggio Brandon Reece David “Chi Chi” Truong COO: Laura Heverly Sub team Leaders: Peter Brinson Adam Ralph Dan Rozsahegyi
Project Scope • Energy efficient affordable green home design • Green training for homeowners and building construction • Habitat for Humanity • Home design is to be delivered May 2009. • Training methods delivered Fall 2009 (after construction)
Past Work • LEED research • Most feasible • How to attain points • Products/Practices most beneficial • Cost-effective, highest return on the dollar • Revised LEED research • Similar, with more points • Demographic research on Reynolds, Indiana • Conferences • Tacoma, WA – Evergreen Standard • Indianapolis, IN - NGBS
Semester Goals • Green rating systems & standards • Disbanded recently to focus on other areas
Green Rating Systems • Energy Star • Funded for HFH by city of Lafayette • LEED, Leadership in Energy and Environmental Design • Several LEED accredited professionals within HFH and Purdue community • NGBS, National Green Building Standard • NAHB, National Association of Home Builders • Rating system popular in Indiana • Simplified compared to LEED, contractor friendly • HFH Construction Manager familiar with this system
LEED Research • Comprehensive approach at energy design • Looks at current homeowner energy use • Looks at energy use after built • Looks at lasting imprint of house
LEED • Divided into teams • Review sections among team • Reviewed applicability of LEED to our project
Construction Manual Brochure • Used for techniques and products • Included in brochure • Cost • Payback • Typical vendors • Sources of information (resources) • Installation • Pros/Cons • Myths • Picture/Diagram
Construction Manual Layout • Table of Contents • Interior finishes • Orientation and design • Foundations • Wall systems • Roof • Landscaping • Documented & created during/after construction
Homeowners Manual Objectives • Properly inform them of appropriate measures that need to be taken • Consider level of homeowner’s education into consideration when designing level of detail
Elevations North Face
Elevations East Face West Face
Elevations South Face
Design Considerations • Orientation • Living spaces on south • Bedrooms on east • Kitchen/garage on northwest • Natural day lighting in living spaces • Accessible bathrooms • Centralize plumbing • Flow between public/semi public/ private • Handicap accessible • Minimize hallways • Natural Ventilation
Energy Modeling • Monthly and yearly totals • Heat load (kWh) • Electric load (kWh) • Size equipment • Analyze effectiveness of materials and systems
Semester Goals Material selection and construction methods • Create home design with design team • Work with HFH CM, John Sears • Material details (i.e. dimensions) for design • Select materials • Justification
Section Breakdown • Plans broken into sections • Work through the home design plans step-by-step • Organizes progress • Section 1 • Home layout • Foundation details • Zoning and building permit information • Section 2 • Material selections (insulation, windows, doors) • Roof pitch & overhang • Section 3 • Material selections (paint, flooring) • Attic
Raised heel truss • Allows full-height insulation over the exterior wall • Added height requires additional materials, increases cost • Beneficial due to payback in heating/cooling costs
Water Heater • 40-gallon tank • Most cost effective • Tankless conserves water; higher electric bill • Our site has a well, therefore water conservation does not benefit the homeowner
Insulation • Spray foam: ½” along interior wall • Seals wall from air infiltration • Batt Insulation: R13 along interior wall on top of spray foam • Provides “meat” of insulating power • Foam sheathing: ½” along exterior wall • Radiant and vapor barrier • R3 insulator
Siding • Vinyl: • Inexpensive, $2-3/sq. ft. • Low maintenance • Easy to install • Fiber cement: • Long life span • Low maintenance • Costs more than vinyl, $3-4/sq. ft. • More difficult to install (delicate handling) • Fireproof • Heat/cold resistant
Alternative Heating • Geothermal: • Water pipes run through yard • Heat/cool home • Expensive installation/maintenance • Additional method of heating in winter • Masonry heating: • Centralized furnace • Heats fluid through masonry twice a day • Wood burning, expensive installation
HVAC • Air-to-air heat exchanger • $500-600 • Pre-heat/cool air • Replaces stale air • High electricity load • Air filtration system • $300+ • Some portable models • Filters air, misses larger particles
Future Project Work • Complete material list • Format: Component Application Cost Green justification Pros & Cons • Local suppliers • Using resources