EN 13629 pdf free download

EN 13629 pdf free download. Wood flooring – Solid pre-assembled hardwood board.
3 Terms and definitions For the purposes of this European Standard, the following terms and definitions given in EN 844-1 :1 995, EN 844- 3:1 995,EN 844-4:1 997, EN 844-6:1 997, EN 844-7:1 997, EN 844-9:1 997, EN 844-1 0:1 998, EN 844-1 1 :1 998, EN 844-1 2:2000 and in EN 1 3756:2002 and the following apply. 3.1 solid pre-assembled hardwood board a wide and generally long solid (single-layer) hardwood element, pre-assembled from several strips by dove-tailing, edge gluing and end jointing. This element has parallel sides, is machined to a regular thickness and profile(s) with profiled edges and ends, and is capable of being assembled with other analogous elements (see Figure 1) 3.2 strip the smallest single item forming the pre-assembled board 3.3 thickness above the groove thickness between the face and any discontinuity such as a change in the profile (excluding chamfering), a groove/glue pocket or a glue line (excluding the glue line of dove-tail joints) 4 Specific product requirements 4.1 Wood species The main species used for solid pre-assembled hardwood boards are European ash, oak, European beech, maple, birch, cherry and tropical hardwoods. Other hardwood species can be used provided that they meet the requirements of this standard. A list of the most commonly used hardwood species for wood flooring as described in this standard is given in Annex A. 4.2 Finishing The product may be delivered with a factory applied surface coating which allows the product to be taken into use immediately after installation. The surface treatment used and any artificial change of the natural wood colour shall be stated in the product description. 4.3 Appearance 4.3.1 General rules Table 1 to 4 define the classification relating to appearance rules for the face and for the non-visible parts (back and edges) of an element of the most commonly used species for solid wood flooring as defined in this standard. Features shall be measured according to EN 1310 (knots assessed according to the general method of 4.1 in EN 1310:1997). Biodeterioration is measured according to EN 1 31 1. A classification with three appearance classes is specified, designated ?, ∆ and ?. A classification named “Free class” is based on the principles laid out in Annex B. The face shall include all the visible surface of the element. The face shall be free from shake and the wood shall be sound. Any continuous glue joint which allows renovation without significantly changing the appearance or the functional characteristics is acceptable. 4.3.3 Free class The free class covers any species which may be used for wood flooring and for which hardness HB has a minimum mean value of 10 N/mm 2 Hardness shall be measured according to EN 1534. The free class covers any classification which the producer wishes to offer or which is requested by the buyer. The proportions or limits of features shall be specifically indicated in the producer’s literature/data sheets, in conformity with Annex B and stated according to Table B.1. NOTE 1 0 N/mm 2 : approximately 1 kgf/mm 2 4.3.4 Natural colours Timber colours are mainly dependent on the wood species. NOTE All timber varies in colour when exposed to light over a period of time. 4.4 Moisture content Individual elements shall have a moisture content at the time of the first delivery of the product of between 6 % and 12 %. The moisture content shall be measured with an electric moisture meter in accordance with EN 131 83-2. In case of dispute, the moisture content shall be determined by oven-drying in accordance with EN 13183-1. 4.5 Geometrical characteristics 4.5.1 Dimensions All dimensions are given at a reference moisture content of 9 %. The methods of measurement of geometrical characteristics are given in EN 13647. Unless there is evidence to the contrary, it shall be assumed that the thickness and width of a piece of timber increase by 0,25 % for every 1 % of moisture content above the reference moisture content, and decrease by 0,25 % for every 1 % of moisture content below the reference moisture content.EN 13629 pdf download.