[week 12] building the prototype

System designs 3 and 4 will be mechanical tested because of some adjusments from existing roof systems.

system design 3
It will be made of straw board attached to the soft wood flanges with natural glue.


Figure 12.1, axonometry of system design 3

For a specimen scale 1:2 (35x180x4500 mm) will be needed:
- straw board 6x200x4500 mm
- soft wood 2x 2335x4500 mm
- glue 2x 4.5x25 grams



Figure 12.2, preperation for a scale model 1:2 of system design 3

system design 4
It will be made from only wood and other natural materials.

Figure 12.3, section of system design 4

For a specimen scale 1:1 (75x275x2000 mm) will be needed:
- soft wood 3x 75x275x1200 mm
- soft wood sub beams 50x50x1000 mm


Figure 12.4, testing a scale model 1:5 of system design 4