Test results Test 1 Load on the centre of the board above the diagonal frame Test 2 Load on the board* in the centre of gravity of the area enclosed by two edge frames** and a diagonal frame Test 3 Load on the edge of the board with the fibre orientation of the solid wood rods running parallel to the edge frame Test 4 Load on the edge of the board with the fibre orientation of the solid wood rods running at a right-angle to the edge frame Test 5 Load on the edge frame in the centre of the field Versuch 6 Load on the edge frame near the aluminium support base

*    **   ***

Material: Material: Constructers: Place of examination: Date of examination:

wood core plywood 22 mm  maple plywood 24 mm  Ingenieurgemeinschaft Speich Hinkes Lindemann  Fachhochschule Bielefeld  14.03.2001

Test No.

1st breaking load [kN]

Deformation[mm]

Drop in load [kN]

Max. breaking load [kN]

1.	9,4	21,5	8,4	10,8
2.	6,1	14,5	5,4	9,8
3.	5,5	9,7	2,6	5,5
4.	9,2	19,6	1,5	9,2
5.	12,4	15,6	12,0	15,6
6.	15,8	8,8	14,5	16,1