GB/T 21140-2017Non-structural finger jointed lumber (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is GB/T 21140-2007 "Finger-jointed non-structural" amendment.

This standard compared with GB/T 21140-2007, the main technical changes as follows.

--- Modify the standard name (see cover);

--- Modify and delete some terms and definitions (see Chapter 3);

--- Modify the classification (see 4.1);

--- refers to the mortise and tenon structure Appendix A (see Appendix A);

--- Remove the finger tenon size series (original Chapter 6);

--- Modify the finger-joined materials (see 6.1);

--- Increased size, deviation and warpage (see 6.3);

--- Modify the appearance of quality (see 6.4);

--- Modify the bending strength index (see 6.5);

--- Increased formaldehyde emission indicators (see 6.5);

--- Modify the bending strength calculation method (see 7.3.4).

1 Scope

This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules and signs, non-structural finger-joinedders, packaging, transport and Storage.

This standard applies to the definition of non-structural 3.1 with finger-joined material.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

Determination of moisture content of wood GB/T 1931-2009

GB/T 2828.1-2012 Sampling procedures for inspection - Part 1 - Batch-by-lot inspection by acceptance quality limit (AQL) plan

Testing methods of physical and chemical properties of wood - based panels and veneer wood - based panels

GB 18580 interior decoration materials and panels of formaldehyde emission limit

3 Terms and definitions

The following terms and definitions apply to this document.

4 Categories