Before tree trunks become columns

Tree trunks from Staatsbosbeheer (Dutch Forest and Nature Reserve) are being inspected. A pictorial report.

8 numbered tree trunks to be assessed	Taking first tree trunk to assessment place	Manual resistance measurement with knife
Tree trunk overview	Head side of rejected tree trunk with fruiting body of brown-rot fungi	Peeled side of rejected tree trunk with fruiting bodies of brown-rot fungi
Mechanical resistance measurement with resistograph	Graphical result of resistograph	Measuring cracking pattern of brown rot
Analysis of the penetration depth and spreading of the rot	Healthy tree trunks	Decay caused by fungi permeating the fibrous structure of the wood
Curve measurement by yellow twine	Selected trees are nearly straight	Turning of new tree trunks for peeling
Fresh douglas wood to replace the two rejected tree trunks	End of the tree trunk with tree code of Dutch Forest and Nature reserve	Finishing of first assessment
From 15-17 meter trees only 9 meter is needed for the columns...	...and the rest is being sawn into bars by Rusman...	...to be used as deck edge of the GTB Lab.
Inspection of leftover wood pieces turned into timber for deck edge of GTB Lab	Closer inspection	28 pieces of 310 x 30 x 10 cm douglas