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| Title: | Preliminary Life Cycle Analysis of Modular and Conventional Housing in Benton Harbor, MI |
| Authors: | Kim, Doyoon |
| Keywords: | life cycle analysis of modular housing
life cycle analysis of conventional housing |
| Issue Date: | Apr-2008 |
| Abstract: | A 1,456 ft2 modular home and conventional site built home in Benton Harbor, Michigan
are analyzed to examine how the different construction and design methods of two types
of housing influence environmental impact over their 50 year life span. The chosen
modular home is fabricated by Redman Homes in Topeka, Indiana and transported to the
building site. The conventional home is modeled after the modular home in collaboration
with Douglas Construction Company. Many assumptions and simplification were made
due to data gaps, so results represent preliminary estimates. The total amount of the
materials placed in the conventional home is 9% less than the amount of the modular
home because the modular home is framed with larger 2X6 studs and requires additional
structural components. The conventional home produces 2.5 times more construction
wastes than the modular home. The lesser material consumption of the conventional home
is offset by a larger amount of waste generation. The building use phase dominates more
than 93% of the life cycle energy consumption and over 95% of the total greenhouse gas
emissions for both homes. The total life cycle energy consumption for modular home is 5%
less than the conventional site home. The total global warming potential for the modular
home is 5% less than the conventional site built home. The use phase energy consumption
and greenhouse gas emission differences are attributed to the expected higher air tightness
(0.194 ACH) of the modular home over the conventional home. The conventional home
was modeled with 80% lower air tightness (0.35 ACH) than the modular home, which
results in 7% more of the natural gas consumption over its service life. The modular home
requires additional transportation energy compared to the conventional home for
delivering the fabricated modular home to the site. However, 4~5 days of the modular
home’s short fabrication cycle time allows the modular home to significantly reduce the
employee’s transportation energy compared to that of the conventional home. |
| URI: | http://hdl.handle.net/2027.42/58212 |
| Appears in Collections: | Dissertations and Theses (Ph.D. and Master's)
Natural Resources and Environment, School of (SNRE)
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Files in This Item:
| File |
Description |
Size | Format | |
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| LCA of modular and conventional home_Doyoon Kim.pdf | | 1156Kb | Adobe PDF | View/Open |
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