[week 7] testing

The variants are now tested on bending strength. The supporting points are 2.8 meter from each other. The load is spread over two points 0.7 meter from each other.

Variant 1 is the existing reference inspired by the Q-concept. The max load before collapsing is 9350 N. The area is 0,9 m2 so it is more than 1 kN per m2. Also bending is minimal. And collapse is announced by a lot of cracking.

Figures variant 1 during collapse.

Variant 2 was already bending under its own weight. The weak point is the combination of bending and shear force that lets the week point of the connection splice apart. The maximum resistance was 323 N.

Figures variant 2.

The biggest problem with variant 3 was that the bottom flenge gets loose from the web because its own weight. Especially with the dove tails that act like a hinge but also during the second attempt without the dove tail connection is mostly resisted with the web strengths. The max resistance was 833 N.

Figure variant 3.