A life cycle analysis on an eco-dwelling in a sustainable community in Pahoa, Hawaii.

1. Life Cycle Analysis
The Bedouin
Island Breeze House
Eco-Dwelling
Hawaii, USA
Kelly Kokaisel
MCAD | Su10

12. Okala Impact Assessment Form date Aug 6 2010
designers
Ano Tarletz product lifetime
87,600 Hours (10 years)
product concept name system boundaries functional unit
The Bedouin Excludes material (impacts/hour)
processing, water use,
and solar/hot water
Island Breeze House | Eco-Dwelling supplied to structure.
BILL OF MATERIALS AMOUNT UNIT X OKALA UNIT = OKALA
FACTOR MP IMPACT MP
Polyethelene tarp 400 lb 20 per lb 8000
Polycarbonate grommets 0.5 lb 36 per lb 18
Nylon rope 300 lb 56 per lb 16800
EVA Vinyl gutter 16 lb 13 per lb 208
PVC piping to water tank 16 lb 15 per lb 240
Sustainably harvested tropical Ohi'a 5000 lb 0 per lb 0
Sustainably harvested tropical Bamboo 1000 lb 0 per lb 0
Pitch Pine (pallet wood) 100 lb 2.4 per lb 240
Lava rocks 5000 lb 0 per lb 0
Nylon 6 string 0.05 lb 56 per lb 2.8
EVA Vinyl flooring 126 lb 13 per lb 1638
Polyethlene flooring 42 lb 20 per lb 840
Polyeth (LDPE)/Polypro (PP) screen 250 lb 14 per lb 3500
Ploybutadiene electric wire 24 lb 23 per lb 552
Aluminum bolts 24 lb 130 per lb 3120
Aluminum wire 50 lb 130 per lb 6500
PVC outlets and boxes 10 lb 15 per lb 150
Nylon 66 fabric ceiling 116 lb 49 per lb 5684
Nylon 6 thread 0.5 lb 56 per lb 28
Total impact
per lifetime
47520.8
Impacts/product lifetime
47,520.80 Impact/hour
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ₌ 0.5425

13. Lifetime hours
87,600

14. The Bedouin | Island Breeze House | Eco-Dwelling
Element Quantity X Eco-Indicator 99 Factor Eco-Indicator 99 Points
Production Phase lbs
Polyethelene tarp 400 x 20 8000
Polycarbonate grommets 0.5 x 36 18
Nylon rope 300 x 56 16800
EVA Vinyl gutter 16 x 13 208
PVC piping to water tank 16 x 15 240
Live and sustainably harvested tropical Ohi'a 5000 x 0 0
Sustainably harvested tropical Bamboo 1000 x 0 0
Pitch Pine (pallet wood) 100 x 2.4 240
Lava rocks 5000 x 0 0
Nylon 6 string 0.05 x 56 2.8
EVA Vinyl flooring 126 x 13 1638
Polyethlene flooring 42 x 20 840
Polyeth (LDPE)/Polypro (PP) screen 250 x 14 3500
Ploybutadiene electric wire 24 x 23 552
Aluminum wire 24 x 130 3120
Aluminum bolts 50 x 130 6500
PVC outlets and boxes 10 x 15 150
Nylon 66 fabric ceiling 116 x 49 5684
Nylon 6 thread 0.5 x 56 28
Production Subtotal 27146.8
Use Phase ton-mi
injection molding 28 x 10 280
calendaring 113 x 3.1 350.3
container ship--USA Mainland to Hawaii 300 x 2.5 750
truck, 28 ton 75 x 1.9 142.5
automobile, 20 mpg 22.5 x 3.6 81
Use Subtotal 973.5

15. End of Life Phase
landfill - aluminum 0.37 x 1000 370
landfill - PET 3.6 x 8.5 30.6
landfill - PVC 0.13 x 5.3 0.689
landfill - nylon 2.08 x 140 291.2
landfill - EVA 0.71 x 7.2 5.112
End of Life Subtotal 697.601
Total Eco-indicator 99 points 29515.502
Analysis conclusions
The production phase has the highest impact; recycled and natural materials could help reduce the footprint.
Using local materials would help reduce the transportation footprint.
Cotton could be used instead of nylon.
(Power usage could not be acurrately calculated in this example and was left out.)
*Numbers with more than two significant digits are rounded to two digits (0.0147 rounds to 0.015 and 2,723 rounds to 2,700).