Types of Wood
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Spruce |
|
Larch on request |
Certificates
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DIN 1052 |
|
EN 386 |
|
ISO 9001 (Reuthe) |
Strength Categories
|
BS 11 (GL 24) |
|
BS 14 (GL 28) |
|
BS 16 (GL 32) |
Visual Grades
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Visible quality |
|
Non-Visible quality |
Surface Quality
|
Planed |
|
Edges with 3 to 4 mm chamfer |
|
Other edge design on request at additional cost |
|
Light-coloured glue joint in spruce and larch
timbers |
|
Small shrinkage cracks may arise due to the natural
and thus unavoidable shrinkage and swelling behaviour of the timber
depending on the ambient conditions. It is recommended that coatings
should not be applied until the equilibrium moisture content has
been reached. |
Surface Treatment
Coatings and protective treatments possible
Gluing
Waterproof glues/adhesives approved by the building authorities in accordance
with EN 386 and DIN 1052, licensed for interiors and exteriors
Moisture Content
Approx. 10 to 12% ± 2% on delivery
|
|
|
Shrinkage and Swelling Behaviour
|
Shrinkage and swelling dimensions
per 1% of change in moisture of timber: |
| |
Length:
Radial:
Tangential:
|
0.01 – 0.02 %
0.19%
0.34% |
|
An equilibrium moisture content of
approx. 9% is to be anticipated in closed, normally ventilated
rooms. |
Density
|
Spruce: ρ 12 = approx. 450 kg/m3 |
Tolerances
|
According to European standard DIN EN/ÖNORM
EN 390 "Glued Laminated Timber - Sizes - Permissible Deviations" |
|
Arches: see separate sheet "Tolerances for
Arches" |
Additional Services
|
Technical advice |
|
Predimensioning |
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Static calculation |
|
Execution planning |
|
Custom joinery work
|
conventional ("by hand") |
|
in the CNC machining centre |
|
|
Pre-assembly:
on request, transportable special parts (e.g. trusses) are pre-assembled
in the workshop as far as possible |
|
Joining parts are supplied on request |
Packaging
|
Film wrapped in packages |
|
Individually wrapped on request |
Transport
Organisation of special transports inc. all permits and escort services |
|
|
Special Shapes and Components |
|
Curved Roof Trusses
|
Any radii desired |
|
Lamella thickness max. in acc. with DIN 1052/EN
386 |
|
minimum lamella thickness 5 mm |
|
Radius > 1.00 m |
Supported Structures
|
Three-hinged tied arch |
|
Tied arch |
Gable Roof Truss
|
up to 20° roof slope |
|
any geometry |
|
Transverse stress reinforcement by means of glued
in threaded rods possible on request |
Finger-jointed Connections
of complete BSHolz cross-sections (general finger-jointed joint) with
resorcinol gluing
|
e.g. frame corners |
|
|
|
Free Shapes
|
by means of appropriately curved gluing |
|
by machining in custom joinery |
Trusses
|
The maximum dimensions are only limited by transport
restrictions |
Static Pre-Camber
|
Simple curvature for single span beams |
|
Inverse curvature for multi-span or cantilever
beams |
Double or Multiple Gluing
for glulam beams over 280 mm wide
Planked Components
|
Bilateral and unilateral planking |
|
glued or mechanically attached |
Note!
BSHolz Special components are produced exclusively in the Reuthe factory!
See BSHolz chapter for additional technical details
|
