Fields of application for KVH® structural timber
Service Class (SC) 1 to 2 in accordance with DIN 1052 (see Table below). Use in outside areas (SC 3) must be checked in each individual case and is only possible if resistant species of wood are used (Larch/Douglas fir, sapwood-free), without finger-jointing. Preservative treatment is not required for Use Class GK 0 according to DIN 68800 ("Protection of wood"). For GK 1 to 3 the need for preservative treatment can be avoided by selecting species of sufficient natural durability, Where preservative treatment is required, in particular for GK3, oil type preservative according to a technical approval should be used.
Fields of application for Duobalken® and Triobalken® beams
Service Class 1 and 2 in accordance with DIN 1052 (see Table below). Preservative treatment is not required for Use Class 1 regardless of the species of wood (danger of insect attack). Resistant species of wood (larch/Douglas fir, sapwood-free) can be used for GK 2 in accordance with DIN 68800. Alternatively an approved oil type preservative can be applied.
Use classes
Service classes in accordance with DIN 1052 | Service classes in accordance with DIN 1052 | Example of normal | Use of KVH®, Duobalken®/Triobalken® beams |
|---|---|---|---|
SC 1 – Dry areas um ≤ 12% (5 to 15%) | Use of KVH®, Duobalken®/Triobalken® beams | Building components enclosed on all sides and heated | KVH®, Duobalken®, Triobalken® |
SC 2 – Areas susceptible to high humidity um ≤ 20% (10 to 20%) | GK 2 where temporary humidity is possible | Protected building components in a carport structure | KVH®, Duobalken®, Triobalken® beams made of larch/Douglas fir heartwood |
SC 3 – Outside areas um > 20% (12 to 24%) | GK 3 for outside areas exposed to the weather | Unprotected building components, balcony structures1) | KVH® made of larch/Douglas fir heartwood without finger-jointing* |
* An additional requirement for preservative treatment for GK 3 must be decided in each individual case
