Abstract
Design of glulam according to the European timber code Eurocode 5
is based on the standard document prEN1194 , according to which
glulam beam strength is to be established either by full scale
testing or by calculation. The calculation must be based on a
knowledge of lamination tensile strength. This knowledge may be
obtained either by adopting a general rule that the characteristic
tensile strength is sixty percent of the characteristic bending
strength, or by performing tensile tests on an adequate number of
laminations representative of the whole population. The present
paper presents an investigation aimed at establishing such an
adequate experimental background for the assignment of strength
classes for glulam made of visually strength graded laminations
from Nordic sawmills. The investigation includes more than 1800
boards (laminations) of Norway spruce (Picea abies) sampled from
eight different regions in Scandinavia, two in Norway, two in
Finland and four in Sweden. About twenty percent of the sample is
tested in bending and the rest in tension. The investigation
includes laminations of different depth for the assessment of size
effect. The proper glulam classes are asssigned to laminations of
the two major visual strength grades currently used in the
Scandinavian countries
Original language | English |
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Title of host publication | Proceedings of PTEC '99 |
Place of Publication | Rotorua, New Zealand |
Publisher | Forest Research Bulletin No. 212 |
Publication date | 1999 |
Pages | 223-230 |
Publication status | Published - 1999 |
Event | Pacific Timber Engineering Conference - Rotorua, New Zealand Duration: 14 Mar 1999 → 18 Mar 1999 |
Conference
Conference | Pacific Timber Engineering Conference |
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Country/Territory | New Zealand |
City | Rotorua |
Period | 14/03/1999 → 18/03/1999 |