CEN/TC 175/WG 2 - Sawn timber

This European Standard defines a method of assessment of drying quality. It applies to a lot of dried sawn timber (surfaced or not). It applies to both softwood and hardwood with a thickness not greater than 100 mm.
The quality of drying is expressed in terms of moisture content: target, average of the lot and variation between the pieces of the lot.
An option for specifying the degree of case-hardening is included.
NOTE 1   Other features related to drying, e.g. check, shake, warp, stain, etc., are specified in documents for visual grading of sawn timber or in product specifications and are not covered by this document.
NOTE 2   In the following the term "sawn timber" is used for all dried timber covered by this scope.

TC - text to be deleted in the teable headers of Tables 3, 4, 6 and 7 - Building and civil engineering

This European Standard specifies permitted deviations for thickness and width at reference moisture content and adjustments for changes in size due to changes in moisture content. Preferred sizes for thicknesses of 38 mm and over are also specified.
This standard applies to softwood sawn timber.
An informative annex gives complementary national sizes.
NOTE   A.5 includes for France the concept of preferred size for green timber.

This European Standard specifies the rules determining the quality of appearance graded sawn timber. It describes various grades of temperate hardwood rough sawn timber and regularized timber for which it lays down denominations and definitions. It also gives rules for composition and acceptance of batches.
This standard gives minimum requirements for each grade classification. Sawn timber not included within limits given in this standard may be defined, if necessary, by contract specifications established on the basis of this standard.
This standard applies to grading of green and dried timber. Characteristics apply at the time of grading.
This standard does not apply to the strength grading of structural timber or to sawn timber for pallets.
This standard is applicable to the following products:
a)   Oak sawn timber, in the following categories:
      1)   Un-edged boards: individual selected pieces and boules;
      2)   Square edged timber and strips (not exceeding 41 mm thickness);
      3)   Baulks (sum of thickness + width greater than or equal to 200 mm and thickness greater than or equal to 80 mm).
b)   Beech sawn timber, in the following categories:
      1)   Un-edged boards: individual selected pieces and boules;
      2)   Square edged timber and strips;
      3)   Prepared timber (dried timber).

This document defines the sampling plans and procedures for inspection by attributes (measurable properties) of sawn timber lots exhibiting a homogenous distribution of characteristics. It also gives control regulations and conditions for conformity or non conformity of a lot in view of the agreed specification.
This document applies to any sawn timber products claimed to comply with specifications defined in the sales contract.
It does not cover the spread of different qualities within a grade or between the contracted grades.
In case of a dispute, a sampling carried out only by customer or supplier is not valid as it cannot be guaranteed to be free from manipulation. Furthermore parties    are free to enlarge the sampling or make use of another method provided an agreement is made between the interested parties.

This standard defines appearance grades for European poplars
The standard applies to dry and green sawn timber , of thickness 18mm up to 34 mm and of width 100mm up to 250mm measured in a green state..
This standard does not apply to the strength grading of structural timber.

This European Standard defines appearance grades for European spruces, firs, pines and douglas firs. This standard applies to dry and green sawn timber. This standard does not apply to the strength grading of structural timber.

This European Standard specifies permitted deviations and preferred sizes of European hardwood sawn timber at a moisture content of 20 %.

This European Standard fixes the rules for the determination of the volume of sawn timber.  It applies to the volume of a batch of similar or dissimilar pieces of sawn softwood or hardwood.  This standard applies to the following ; - Regularized green timber; - Regularized dried timber; - Prepared timber; - Planes timber; regardless of whether or not the timber meets the requirements of any dimensional or qualitative standards.

This document defines a method of assessment of drying quality. It applies to a lot of dried sawn timber, a lot of dried planed timber and a lot of dried sawn timber surfaced by other means. It applies to both softwood and hardwood with a thickness not greater than 100 mm.
The quality of drying is expressed in terms of target and average moisture content of the lot as well as defining the moisture content variation between individual pieces expressed as allowable upper and lower limits.
An option for specifying the degree of case-hardening is included.
NOTE 1   Other features related to drying, e.g. checking, distortions, stain, etc., are specified in documents for visual grading of sawn timber or in product specifications and are not covered by this document.
NOTE 2   In the following the term "sawn timber" is used for all dried timber covered by this the scope.

This European standard specifies permitted deviations and preferred sizes of European softwood sawn timber at a moisture content of 20%.

This standard specifies permitted deviations for thicknesses and widths at a reference moisture content and adjustments for changes in size due to changes in moisture content. Preferred sizes for thicknesses of 38 mm and over are also specified. This standard applies to softwood sawn timber.

This standard specifies the rules determining the quality of appearance graded sawn timber. It describes various classes of temperate hardwood rough sawn timber and regularized timber for which it lays down denominations and definitions. It also gives rules for composition and acceptance of batches. This standard applies to green and dried timber. This standard is applicable to oak or beech sawn timber. This standard does not apply to the strength grading of structural timber or to timber for pallets.

This standard defines the rules determining the quality of appearance graded sawn timber. It describes various classes of temperature hardwood rough sawn and regularized timber for which it lays down denominations and definitions. It also gives rules for composition and acceptance of batches. This standard applies to green and dried timber. This standard does not apply to the strength grading of structural timber.

This European standard defines the sampling plans and procedures for inspection by attributes of sawn timber lots exhibiting an homogenous distribution of properties. It also gives control regulations and conditions for conformity or non conformity of a lot in view of the agreed specification.  This standard applies to any sawn timber products claimed to comply with specifications defined in the sales contract.  It does not cover the spread of different qualities within a grade or between the contracted grades.