[week 8] functional unit

As the path to innovation was not very successful after the mechanical testing, a more conservative way was chosen. Building variants that fit the Cradle to Cradle criteria such as only technological or biological materials will be compared.

These variants can be compared with a Life Cycle Assessment on environmental impacts. A strict boundary will be needed to compare them with the same functional unit.

The functional unit is 1 m2 roof including:

* boarding, insulation, waterproofing and inside finishing
* construction of beams and connections equally distributed over 1 m2

The variants are:

* steel construction with 200mm glass wool insulation and gypsum inside finishing
* wood-steel hybrid that can be disassembled or incinerated
* wood laminated beam that can be incinerated
* wood and natural adhesives that can be composted
* massive wood as single material

An interesting variant that can be ad:

* bio based composite with soy oil and flax fibers