Investigations on logging process of wind damaged trees with the internal combustion chain saw.

Investigations on logging process of wind damaged trees with the internal combustion chain saw. The work aimed at determination of the time share of particular technological operations in the process of wood logging of various types of damaged trees. The investigations were carried out during redressing of the hurricane effects in Forest Inspectorate Osie RDLP Torun in June 2007. It was found that number of operations executed on a tree did not directly affect the logging time. The longest logging time was found for standing inclined trees and windfallen trees (on the average 232 sec. and 181 sec., respectively). Branching was most time-consuming operation and averaged to 57.5% of logging time for all investigated types of trees. It was found that technological down times resulting from specifi c after-calamity conditions could prolong even several times the logging time of a given tree.