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Kvantifikace odchylek objemu dříví při jeho měření harvestory a rozbor jejich závislostí na vybraných faktorech
Lesák, Josef
This thesis focuses on the problems with determining the dimensions of the timber during the processing with the harvesters. This study discusses all the possible variations in measurements, their origin and a resulting impact on the volume of the timber. Furthermore, this thesis describes other methods of measuring timber, such as manual measurement or measuring by sensing proportions of the timber with a saw measuring frames. The emphasis is on the variances in the calculation formulas, particularly focused on the differences in setting the reading bark. The research is supported by two measurements in the field, more specifically on the spruce vegetation. During these field measurements we performed the cuts with harvesters on the amount of 6 trees which were subsequently transported to the sawmill for the standard electronic checks. The log performed with the harvesters were afterwards measured twice for the purposes of precise volume measuring.
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Analýza cen surového dříví nabízeného při pni dodavatelsky či formou elektronických aukcí na LS Hořice
Bříza, Ladislav
This diploma thesis deals with the analysis of raw wood prices offered as felled sales by delivery or by means of electronic auctions at the Forest Administration of Hořice, forest company of the Czech Republic, s. p. In each chapter there is described the forest administration, information about sold quantity of wood mass and detailed analysis of prices of sold wood in auctions. The diploma thesis is focused on the period 2012 - 2016. The aim of the diploma thesis is to analyze raw wood prices offered by the method referred to as "felled sales", on delivery, or in the form of electronic auctions. Further, the subsequent synthesis of the obtained results and recommendations, which woody species or vegetation groups (according to individual parameters) is more suitable to offer in supply and in the form of electronic auctions.
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Měření dříví ATRO metodou
Brtnický, Lukáš
The topic of this bachelor thesis is acceptance of wood mass and its processing in woodworking plant Kronospan Jihlava. Wood is there accepted with the youngest method, which is the Atro method, that means measuring of dry wood weight. This method was compared with another two methods of acceptance. At first with annual piece method and volume was calculated with use of cubic tables to one decimal place (teplická method). Another method was calculating of wood volume using reduction coefficient in cubic meters without wood bark.
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