Pregled bibliografske jedinice broj: 1078789
European standard for round and sawn timber (method of measurement of dimensions) – influence on volume losses
European standard for round and sawn timber (method of measurement of dimensions) – influence on volume losses // Exceeding the Vision: Forest Mechanisation of the Future. Proceedings of the 52nd International Symposium on Forestry Mechanization / Czupy, Imre (ur.).
Šopron: University of Sopron Press, 2019. str. 304-312 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 1078789 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
European standard for round and sawn timber
(method of measurement of dimensions) –
influence on volume losses
Autori
Đuka, Andreja ; Sertić, Mirna ; Pentek, Tibor ; Vusić, Dinko ; Poršinsky, Tomislav
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Exceeding the Vision: Forest Mechanisation of the Future. Proceedings of the 52nd International Symposium on Forestry Mechanization
/ Czupy, Imre - Šopron : University of Sopron Press, 2019, 304-312
ISBN
978-963-334-343-2
Skup
52nd International Symposium on Forestry Mechanization (FORMEC 2019) " Exceeding the Vision: Forest Mechanisation of the Future"
Mjesto i datum
Sopron, Mađarska; Forchtenstein, Austrija, 06.10.2019. - 09.10.2019
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
sessile oak, volume equations, butt-log, diameter rounding, length rounding, EN 1309-2:2006
Sažetak
This paper presents the research of volume losses of processed sessile oak (Quercus petraea (Matt.) Liebl.) butt-logs concerning the use of four different equations for assessment of timber volume. Log volumes were analysed and compared considering Huber's, Smalian's, Riecke-Newton's equation and Centroid sampling as opposed to the volume determined by the sectioning method. The test sample involved 225 butt-logs of sessile oak with the mean diameter ranging between 25 and 70 cm, i.e. 25 pieces in 5 cm diameter classes. The research included: 1) accuracy (and suitability) of the equations for the assessment of butt-log volume, 2) amount and structure of volume loss due to the prescribed method of measuring diameter and length of butt-logs considering EN 1309-2:2006 (E) standard and 3) analysis of volume loss due to undercuts, indicating that measuring butt-logs length from half of the undercut's height is questionable. Smalian's equation overlapped the average gained by the sectioning method by 13.2%, the Centroid sampling was down by 3.8%, Huber's equation downgraded by 6.6%, and Riecke-Newton's equation did not show any deviation from the sectioning method. There was a statistically significant difference between these volume measurement methods.
Izvorni jezik
Engleski
Znanstvena područja
Šumarstvo
POVEZANOST RADA
Ustanove:
Fakultet šumarstva i drvne tehnologije
