Strength and structural properties of structural timber

• Autorzy: Rudziński L. , Wdowiak A.

Warianty tytułu

PL

Właściwości strukturalno-wytrzymałościowe drewna konstrukcyjnego

• Języki publikacji: EN PL

Abstrakty

EN

Taking into account the growing significance of structural timber in the building industry, the paper aims at defining the selected mechanical and physical properties of the Polish pine structural sawn timber from four nature and forest lands: Land A – Mazovian-Podlasian Nature and Forest Land (Forest District Garwolin), Land B – Little Poland Nature and Forest Land (Forest District Przedbórz), Land C – Silesian Nature and Forest Land (Forest District Kedzierzyn Koźle), Land D – Carpathian Nature and Forest Land (Forest District Piwniczna) [4]. The paper presents the definition of timber, its macroscopic and microscopic structure as well as factors affecting the mechanical properties of timber such as moisture or structural defects. The conducted tests involved sorting sawn timber in terms of strength using visual method according to the PN-D-94021 standard as well as characterizing the average moisture of the fresh and artificially dried sortment [6-8].

Słowa kluczowe

EN

timber; macroscopic and microscopic structure; physical and mechanical properties; moisture; Poland's nature and forest lands; fresh and dried sawn timber; artificial drying; sorting in terms of strength

PL

drewno; struktura makroskopowa i mikroskopowa; właściwości fizyczne i mechaniczne; wilgotność; przyrodniczo-leśne tereny Polski; świeża i suszona tarcica; suszenie sztuczne; sortowanie pod względem wytrzymałości

• Wydawca: Wydawnictwo Politechniki Świętokrzyskiej
• Czasopismo: Structure and Environment
• Rocznik: 2016
• Tom: Vol. 8, no. 2
• Strony: 103--108
• Opis fizyczny: Bibliogr. 10 poz., fot., tab., wykr.

Twórcy

autor

Rudziński L.

• Kielce University of Technology

autor

Wdowiak A.

• Kielce University of Technology

Bibliografia

• [1] Kozakiewicz P.: Physics of timber in theory and problem. Selected issues [in Polish]. Wydawnictwo SGGW, Warszawa 2003.
• [2] Rudziński L.: Repairs and strengthening of timber structures [in Polish]. Wydawnictwo Politechniki Świętokrzyskiej, Kielce 2000.
• [3] Wdowiak A.: Assessment of technical condition of wooden structures, Proceedings of TRANSCOM 2015, pp. 326.
• [4] Krzosek S.: Strength-related sorting of Polish pine structural sawn timber [in Polish], Rozprawy Naukowe i Monografie, Wydawnictwo SGGW, Warszawa 2009.
• [5] PN-EN 336:2013-12 Structural timber. Dimensions, permitted deviations [in English].
• [6] PN-EN 13183-2:2004 Moisture content of a piece of sawn timber - Part 2: Estimation by electrical resistance method [in Polish].
• [7] PN-EN 13183-3:2007 Moisture content of a piece of sawn timber - Part 3: Estimation by capacitance method [in Polish].
• [8] PN-D-94021:2013-10 - Softwood structural sawn timber sorted using strength methods [in Polish].
• [9] PN-EN 14081-1:2016-03 Timber structures - Strength-sorted structural timber with a rectangular cross section - Part 1: General Requirements [in English].
• [10] PN-EN 1912:2012 Structural timber - Strength classes - Visual division into classes and sorts [in English].

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).