Dr inż. Adam Zydroń

Evaluation of applicability of forest land valuation methods used in Germany under Polish socio-economic conditions

The paper presents a comparison of valuation methods and procedures for forest land lots (unwooded forest land) in Germany and Poland. Moreover, the market for unwooded forest land within selected areas within administrative boundaries of analysed forest districts was presented. The number of transactions for this type of landed property was observed to increase in the years 2004-2007. It was attempted to apply in the analysed areas the so-called German valuation method for unwooded forest land. On the basis of the analysis it was found that this method may be applied under Polish socio-economic condi-tions. This method is characterised by simplicity and enhances the applicability of the comparative approach in the valuation of unwooded forest land. ...

Dr inż. Mariusz Cholewa

Dr inż. Adam Zydroń

Mgr inż. Łukasz Pelc

TESTS OF SELECTED MECHANICAL PARAMETERS OF NON-WOVEN GEOTEXTILES OVERLYING A DEFORMABLE AND UNDEFORMABLE SUBSOIL

In the article results of laboratory tests of a puncture resistance with a pyramid carried out on chosen needle punched non-woven geotextiles of basic weight from 150 do 1200 g • m-2 are presented. Values of the puncture strength were compared for geotextiles placed on a rigid and soft support. According to PN-EN 14574:2006P a rigid support was an aluminum plate. Ash-slag mixture, compacted in a cylinder at compaction indexes of Is=0.90, 0.95 and 1.00 was used as a soft support.It was observed that the puncture strength values on the rigid support are increasing proportionally to the basic weight. The value of the strength needed to puncture tested sample on the soil ground is decreasing along with the increase in the compaction index. Puncture of the geotextiles placed on the soft support required higher strengths in comparison to the rigid support and caused large deformations of the geotextiles. ...