The diploma thesis was focused on the methods of mechanical stress of standing trees of Norway spruce (Picea abies) and finding out the insufficiency associated with this method to facilitate the work for next measurements in the subsequent years. There were found wind damages that occurred in the last 15 years. Damages were determined from reports of state of forestry management and from reports of agency forest protection. The method was tested in two locations (in Kostelec and in Bělčice). During testing was wire rope changed for fabric rope, which has better qualities and it is safer. Round slings were placed near to the centre of tree crown, then was tied fabric rope, strain gauge with data logger and hook from the winch rope. The winch was secured by round sling to the anchoring tree. Overall there were tested 10 trees, the applied load was from 320 to 1,060 kg. In the case, when the tree become broken, there was noted the height of the break point.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:258166 |
| Date | January 2016 |
| Creators | Gregor, Martin |
| Contributors | Lukášová, Karolína, Holuša, Jaroslav |
| Publisher | Česká zemědělská univerzita v Praze |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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