Zugl.: Stuttgart, Univ., Diss., 2009

University, Diss., 2004--München.

Techn. Hochsch., Diss., 2000--Aachen.

University, Diss., 2003--Bonn. / Erscheinungsjahr an der Haupttitelstelle: 2001.

Universiẗat, Diss., 1991--Saarbrücken.

University, Diss., 2001--Saarbrücken.

University, Diss., 2000--Saarbrücken.

The aim of this dissertation was to prepare a literery overview of the material broadly used for the wooden constructions and their consecutive experimental trials focused to strength and module of elasticity in bending at strictly selected large oriented strandbo-ards, quality strandboards and chipboards at different levels of moisture. The next phase of the dissertation was to prepare a statistics evaluation of gained data and results during the evaluation period which are outlined at different forms including tables and statistics charts.

Basic presumption of good functionality of forest roads is not only high quality of laminars in flexible pavement, but also right distribution of elasticity modules in soil plain and it's protection against degradation during the process of building. Materials used for TA ČR project, which were isolated from forest roads subsoil, were analyzed in soil mechanics laboratory of Geostar s.r.o. company for the purposes of diploma thesis. Basic laboratory tests were carried out in order to classify soils. Sub-component is to propose a simplified classification of soils for the implementation of forest haul routes. In this work are validated according to the static load tests ( SZZ ) and dynamic light boards ( LDD ) . The thesis includes evaluation of the quality of existing forest roads for faults and failure on forest roads classes 1L and 2L with different surfaces and ground covers .

This work was the structure of resonant spruce wood devoted to. The tree-ring widths and summer wood measure were measured. By use of non - destructive methods their acoustic properties were measured - speed of sound, acoustic constant, logarithmic decrement of damping, acoustic wave resistance, wood - density and Young's modulus. Data were statistically analyzed and the wood structure coefficient of variation for each specimen was calculated. There were three different methodologies for verification of the wood structure variability effect formulated. Subsequently, it was found that it is possible to determine the effect on the acoustic properties of the wood macroscopic structure variability.