Memorias de investigación
Communications at congresses:
Visual grading of large cross section structural timber of Pinus sylvestris L. according to UNE 56544:2007 standard
Year:2011
Research Areas
  • Engineering
Information
Abstract
Large cross section structural timber have been used in many structures over long periods of time and still make up an important part of the market due to its mechanical properties. Furthermore, it is frequent its employment in new construction site. It involves the need for a visual grading standard for timber used in construction according to the quality assessment. The material has to satisfy the requirements according to the currently regulations. UNE 56544 is the Spanish visual grading standard for coniferous structural timber. The 2007 version defined a new visual grade in the standard for large section termed Structural Large Timber (MEG). This research checks the new visual grading and consists of 116 structural size specimens of sawn coniferous timber of Scotch pine (Pinus sylvestris L.) from Segovia, Spain. The pieces had a cross section of 150 by 200 mm. They were visually graded according to UNE 56544:2007. Also, mechanical properties have been obtained according to standard EN 408. The results show very low output with an excessive percentage of rejected pieces (33%). The main reasons for the rejection of pieces are fissures and twist.
International
Si
Congress
SHATIS 11. International Conference on Structural Health Assessment of Timber Structures
960
Place
Lisboa. Portugal
Reviewers
Si
ISBN/ISSN
978-989-96461-2-4
Start Date
16/06/2011
End Date
17/06/2011
From page
1
To page
6
Book of abstracts
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Construcción con Madera
  • Departamento: Construcción y Vías Rurales