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This European Standard sets out requirements regarding the performance of characteristics of the following types of cross laminated timber to be used in buildings and bridges:
— straight or curved cross laminated timber comprising only timber layers but no large finger joints;
— straight cross laminated timber comprising only timber layers and large finger joints;
— straight cross laminated timber comprising also wood based panel layers but no large finger joints.
It also lays down procedures for Assessment and Verification of Constancy of Performance and specifies marking and labelling of cross laminated timber.
This European Standard covers cross laminated timber of all three types mentioned above:
— manufactured according to Annex G, which i.e. sets up provisions for
boundary conditions during manufacture;
moisture content and temperature of timber to be bonded;
production of finger joints, edge bonds and bonds between layers;
— to be used in service class 1 or 2 according to EN 1995 1 1;
— made of coniferous species and poplar listed in 6.1.5;
— which may be made of layers made of different species having similar properties;
— bonded with phenolic or aminoplastic or moisture curing one-component polyurethane or emulsion polymer isocyanate adhesives;
— built up of at least three orthogonally bonded layers (at least two of them timber layers);
— which max have, depending on the number of layers, adjacent layers bonded parallel to the grain;
— made of timber layers which are made of strength graded timber according to EN 14081 1;
— made of timber layers having nominal thicknesses between 6 mm and 60 mm (including) taking into account the layup requirements given in this European standard;
— made of timber layers which may be edge bonded or which are not bonded and have spacing less than 6 mm between adjacent laminations;
— bonded with adhesives, fulfilling the requirements given in this European standard;
— having nominal overall thicknesses up to 500 mm.
Additional provisions of this European Standard apply for straight cross laminated timber comprising only timber layers and comprising large finger joints:
— made from cross laminated timber pieces having the same cross-section and layup;
— made from cross laminated timber pieces having nominal cross-sectional thicknesses from 51 mm up to 345 mm (inclusive) and nominal minimum thicknesses of the outer layers not less than 17 mm.
— made from cross laminated timber pieces solely comprising timber layers;
— made from plane cross laminated timber pieces jointed so that no regular change between the grain directions of the layers occurs;
— with finger joints having a finger length of at least 45 mm and fingers which are visible at the two narrow sides of the components;
— bonded with phenolic-, aminoplastic or moisture curing one-component polyurethane adhesives.
Additional provisions of this European standard apply for straight cross laminated timber comprising also wood based panel layers but no large finger joints
— made of structural wood based panels specified in this European standard, fulfilling the requirements for use in service class 2 or 3 according to EN 1995 1 1, having no structural joints between the single panels and having thicknesses between 6 mm and 45 mm (including);
This European Standard applies to cross laminated timber untreated or treated against biological attack. Treatments containing coal tar destillates, creosote, creosote oil or phenols are not covered.
This European Standard does not cover:
— cross laminated timber treated with fire retardants;
— cross laminated timber which is produced from re-used timber or wood based panels comprising re-used timber.
Reģistrācijas numurs (WIID)
66157
Darbības sfēra
This European Standard sets out requirements regarding the performance of characteristics of the following types of cross laminated timber to be used in buildings and bridges:
— straight or curved cross laminated timber comprising only timber layers but no large finger joints;
— straight cross laminated timber comprising only timber layers and large finger joints;
— straight cross laminated timber comprising also wood based panel layers but no large finger joints.
It also lays down procedures for Assessment and Verification of Constancy of Performance and specifies marking and labelling of cross laminated timber.
This European Standard covers cross laminated timber of all three types mentioned above:
— manufactured according to Annex G, which i.e. sets up provisions for
boundary conditions during manufacture;
moisture content and temperature of timber to be bonded;
production of finger joints, edge bonds and bonds between layers;
— to be used in service class 1 or 2 according to EN 1995 1 1;
— made of coniferous species and poplar listed in 6.1.5;
— which may be made of layers made of different species having similar properties;
— bonded with phenolic or aminoplastic or moisture curing one-component polyurethane or emulsion polymer isocyanate adhesives;
— built up of at least three orthogonally bonded layers (at least two of them timber layers);
— which max have, depending on the number of layers, adjacent layers bonded parallel to the grain;
— made of timber layers which are made of strength graded timber according to EN 14081 1;
— made of timber layers having nominal thicknesses between 6 mm and 60 mm (including) taking into account the layup requirements given in this European standard;
— made of timber layers which may be edge bonded or which are not bonded and have spacing less than 6 mm between adjacent laminations;
— bonded with adhesives, fulfilling the requirements given in this European standard;
— having nominal overall thicknesses up to 500 mm.
Additional provisions of this European Standard apply for straight cross laminated timber comprising only timber layers and comprising large finger joints:
— made from cross laminated timber pieces having the same cross-section and layup;
— made from cross laminated timber pieces having nominal cross-sectional thicknesses from 51 mm up to 345 mm (inclusive) and nominal minimum thicknesses of the outer layers not less than 17 mm.
— made from cross laminated timber pieces solely comprising timber layers;
— made from plane cross laminated timber pieces jointed so that no regular change between the grain directions of the layers occurs;
— with finger joints having a finger length of at least 45 mm and fingers which are visible at the two narrow sides of the components;
— bonded with phenolic-, aminoplastic or moisture curing one-component polyurethane adhesives.
Additional provisions of this European standard apply for straight cross laminated timber comprising also wood based panel layers but no large finger joints
— made of structural wood based panels specified in this European standard, fulfilling the requirements for use in service class 2 or 3 according to EN 1995 1 1, having no structural joints between the single panels and having thicknesses between 6 mm and 45 mm (including);
This European Standard applies to cross laminated timber untreated or treated against biological attack. Treatments containing coal tar destillates, creosote, creosote oil or phenols are not covered.
This European Standard does not cover:
— cross laminated timber treated with fire retardants;
— cross laminated timber which is produced from re-used timber or wood based panels comprising re-used timber.
