BS EN 312:2010 pdf free download

BS EN 312:2010 pdf free download.Particleboards – Specifications.
BS EN 312 specifies the requirements for flat-pressed or calendar-pressed unfaced particleboards as defined in EN 309.
NOTE 1 This standard is called up in EN 13986 for construction applications, Products specified in this standard are referred to in EN 13986 as resin-bonded particleboards.
The values listed in this standard relate to product properties, but they are not characteristic values to be used in design calculations.
NOTE 2 Such characteristic values (e.g. for use in design calculation in EN 1995-1-1) are given either in EN 12369-1 or derived by testing according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.
NOTE 3 Partideboards in accordance with this standard may be referred to as P1 to P7-boards. Boards of type P4 to P7 are intended for use in design and construction of load-bearing or stiffening building elements, e.g. walls, flooring, roofing and I-beams (see EN 1995-1-1 and/or performance standards),
This standard does not apply to extruded particleboards and flaxboards. which are standardised in EN 14755 and EN 15197 respectively.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 120, Wood based panels — Determination of formaldehyde content — Extraction method called the perforator method
EN 309:2005, Particleboards — Definition and classification
EN 310, Wood-based panels — Determination of modulus of elasticity in bending and of bending strength
EN 311, Wood-based panels — Surface soundness — Test method
EN 317, Particleboards and fibreboards — Determination of swelling in thickness after immersion in water
EN 318, Wood based panels — Determination of dimensional changes associated with changes in relative humidity
EN 324-2, Wood-based panels — Determination of dimensions of boards — Part 2: Determination of squareness and edge straightness
EN 326-1, Wood-based panels — Sampling, cuffing and mspection — Part 1: Sampling and cutting of test pieces and expression of test results
EN 326-2, Wood-based panels — Sampling, cutting and inspection — Part 2: Quality control in the factory
EN 326-3, Wood-based panels — Sampling. cutting and inspection — Part 3: Inspection of en isolated lot of panels
EN 717-1, Wood-based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission by the chamber method
EN 1087-1, Particleboards — Determination of moisture resistance — Part 1: Boil test
EN 12871, Wood-based panels — Performance specifications and requirements for load bearing boards for use in floors, walls and roofs
EN 13986:2004, Wood-based panels for use in construction — Characteristics, evaluation of conformity and marking
ISO 3340, Fibre building boards — Determination of sand content
3 Terms and definitions
Fog- the purposes of this document, the terms and definitions given in EN 13986:2004 and EN 309:2005 and the following apply.
3.1 dry conditions
conditions corresponding to service class I of EN 1995-1-1:2004 which is characterised by a moisture content in the material corresponding to a temperature of 20 °C and a relative humidity of the surrounding air only exceeding 65 % for a few weeks per year
3.2 humid conditions
conditions corresponding to service class 2 of EN 1995-1-1:2004 which is characterised by a moisture content in the material corresponding to a temperature of 20 °C and a relative humidity of the surrounding air only exceeding 85 % for a few weeks per year.BS EN 312 pdf download.