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Tension anchor
Complete one-piece tension anchor system for anchoring the base of wood-framed structures in steel or concrete. For posts with a width of 60 mm upwards.
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- If walls are panelled on both sides using OSB boards (15.0–25.0 mm), tension anchors can be nailed in place through the OSB boards.
- The minimum length of the nails is increased by the thickness of the intermediate OSB layer.
- One-piece narrow tension anchor for narrow posts and indirect attachment over an intermediate OSB layer
- Sheet metal hot-dip galvanised on both sides (S250GD + Z275 [approx. 20 µm]) in line with EN 10346, thickness 2.5 mm, and solid steel base plate made from S235 in line with EN 10025-2
- Application in utilisation classes 1 and 2 in line with EN 1995:2013
The tension anchor connection must be fully nailed.
Information on direct connection on OSB panels:
In most cases, nailing down OSB panels is only a stiffening measure. This means that an additional group of nails is positioned above the tension anchor to ensure that the tensile forces being anchored are routed into the post via the OSB panel. This group of nails must be dimensioned for the tensile forces being anchored (i.e. the same number of nails is selected as for the respective tension anchor). The nail length of 60 mm must be increased by the thickness of the intermediate OSB layer.
See Blass/Laskewitz report. "Tragfähigkeit von Verbindungen an Holztafelelementen (Load-bearing capacity of connections on wood panel elements)"
The respective basic conditions of the applicable anchor approval must be observed.
Available work documents:
Load tables and detailed processing instructions can be found on the service page www.wuerth.de/holzverbinder.
European Technical Approval ETA 10/0186
Tension anchor connection of wooden walls to concrete or steel substrates
Suitable fasteners:
- Comb/ribbed nails in line with EN 14592: ≥.4.0 x 60 mm ribbed nails
- Bolts in accordance with manufacturer's specifications
- Recommended dowels for fixing to concrete: W-SABS; W-FAZ; W-VIZ; W-VM 250
- Suitable for OSB panels with a thickness of 15.0 to 25.0 mm
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