CEN/TC 124/WG 5 - Prefabricated wall, floor and roof elements

This European Standard specifies material, product and documentation requirements for prefabricated structural members (e.g. trusses for roofs, walls and floors, frames, composite beams and girders) for use in buildings made from solid structural timber according to EN 14081-1 with or without finger joints assembled with punched metal plate fasteners.
The standard also covers tests and/or calculation methods to carry out the evaluation of conformity and requirements for the marking of these members.
As regards resistance to biological organisms, this standard covers prefabricated structural members manufactured from either untreated timber or timber treated to improve its natural durability.
This standard does not cover prefabricated timber structural members intended to be used in constructions under predominantly dynamic loads (e.g. bridges) or for use in unprotected external conditions (i.e. use class 3 in accordance with EN 335-1).
Furthermore, it does not cover members treated to improve their fire performance.

This European Standard sets out provisions regarding the performance characteristics for prefabricated structural (load-bearing) wall, floor and roof elements consisting of framing members of timber, glued solid timber, glued laminated timber, laminated veneer lumber (LVL), structural prefabricated wooden beams/columns and sheeting made of wood-based boards/panels or gypsum boards/panels on one or both sides, for use in service class 1 or 2 in accordance with EN 1995-1-1.
This European Standard also specifies additional requirements for the components and for the production of the elements.
It sets down requirements for the provision of performance details of prefabricated elements at point of delivery.
The panels and/or boards are connected to the framing members by suitable structural adhesive bonding or by mechanical fixing. The elements may be insulated or uninsulated. The exterior faces of the elements may also be covered with insulation material.
This European Standard covers glued and mechanically fixed wall elements with length of maximal 16,5 m, height of maximal 3,2 m and of unrestricted thickness.
This European Standard covers mechanically fixed floor and roof elements with length of maximal 16,5 m and a thickness of maximal 1,0 m and a width of maximal 3,5 m. The mechanically fixed floor element may include additional bond lines to increase stiffness to enlarge resistance versus vibrations.
This European Standard covers glued floor and roof elements with length of maximal 12,5 m and a load bearing cross-sectional thickness of maximal 0,35 m and a width of maximal 3,5 m.
This European Standard identifies structural (3.1.4) and non-structural (3.1.3) components to be used in the elements.
This European Standard also lays down provisions and Procedures for Assessment and Verification of Constancy of Performance of these elements.
This European Standard applies to elements that may have openings, e.g. for windows, doors etc. It does not apply to the properties of incorporated doors or windows.
This European Standard does not cover components and elements treated to enhance their fire performance.
Examples of different build-ups are given in Clause 3.

This European Standard sets out provisions regarding the performance characteristics for prefabricated structural (load-bearing) wall, floor and roof elements consisting of framing members of timber, glued solid timber, glued laminated timber, laminated veneer lumber (LVL), structural prefabricated wooden beams/columns and sheeting made of wood-based boards/panels or gypsum boards/panels on one or both sides, for use in service class 1 or 2 in accordance with EN 1995-1-1.
This European Standard also specifies additional requirements for the components and for the production of the elements.
It sets down requirements for the provision of performance details of prefabricated elements at point of delivery.
The panels and/or boards are connected to the framing members by suitable structural adhesive bonding or by mechanical fixing. The elements may be insulated or uninsulated. The exterior faces of the elements may also be covered with insulation material.
This European Standard covers glued and mechanically fixed wall elements with length of maximal 16,5 m, height of maximal 3,2 m and of unrestricted thickness.
This European Standard covers mechanically fixed floor and roof elements with length of maximal 16,5 m and a thickness of maximal 1,0 m and a width of maximal 3,5 m. The mechanically fixed floor element may include additional bond lines to increase stiffness to enlarge resistance versus vibrations.
This European Standard covers glued floor and roof elements with length of maximal 12,5 m and a load bearing cross-sectional thickness of maximal 0,35 m and a width of maximal 3,5 m.
This European Standard identifies structural (3.1.4) and non-structural (3.1.3) components to be used in the elements.
This European Standard also lays down provisions and Procedures for Assessment and Verification of Constancy of Performance of these elements.
This European Standard applies to elements that may have openings, e.g. for windows, doors etc. It does not apply to the properties of incorporated doors or windows.
This European Standard does not cover components and elements treated to enhance their fire performance.
Examples of different build-ups are given in Clause 3.

This standard specifies requirements to wood-based semi-rigidly and rigidly built-up, prefabricated wall, floor and roof elements for use in load bearing structures.
It also provides for the evaluation of conformity to this standard.
Note: Protection against noise is not covered, because it can be calculated only for the complete structure, so it is "not relevant".