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GB/T 36408-2018Laminated veneer lumber for timber structures (English PDF)

木结构用单板层积材

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 7, 2018

Implementation date

January 1, 2019

Scope

GB/T 36408-2018 is the English-translated version of 木结构用单板层积材.

GB/T 36408-2018 covers laminated veneer lumber made for use as a load-bearing material in timber structures. It defines the product, whole or spliced veneers laid along the grain and bonded with a structural adhesive, and the characteristic values of its mechanical properties.

It classifies the lumber by pretreatment, untreated or treated against decay, insects or fire, and by whether its thickness has been machined, and sets the requirements, the test methods and the quality control of production.

A normative annex gives the characteristic value coefficients, and the standard also covers marking, packaging and storage. It relies on GB 50005 for timber structure design and on GB/T 50329 for timber structure test methods. It was issued on 7 June 2018 and has applied since 1 January 2019.

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Document preview — GB/T 36408-2018

National Standard of the People's Republic of China

ICS
91.080.20
Classification
P 23

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Terms and Definitions
  • 4 Category
  • 5 Requirements
  • 6 Test method
  • 7 Quality Control
  • 8 Identification, packaging and storage
  • Appendix A (Normative Appendix) Eigenvalue Coefficient
  • Reference

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

Some elements of this standard may involve patents, and the issuing organization does not assume responsibility for identifying these patents.

1 Scope

This standard specifies the terminology, classification, requirements, test methods and quality control of veneer lumber for wood structures as well as marking, packaging and storage.

This standard applies to veneer lumber used as a structural material in wood construction.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 2828.1. Sampling and sampling procedures - Part 1. Batch-to-batch sampling plan for reception quality limit (AQL)

GB/T 17657-2013 Test method for physical and chemical properties of wood-based panels and veneered panels

GB/T 18259 wood-based panel and its surface decoration terminology

GB/T 20241 veneer lumber

GB 50005 wood structure design specification

GB 50206 Wood Structure Engineering Construction Quality Acceptance Specification

GB/T 50329 wooden structure test method standard

3 Terms and definitions

The following terms and definitions defined in GB/T 18259 and GB 50005 apply to this document.

3.1 Laminated veneer lumber for timber structures

For the purpose of load-bearing, the whole or spliced veneer is a structural panel for the main composite in accordance with the straight grain, and is formed by a structural adhesive.

3.2 Mechanical property characteristic value

The statistical values calculated from the test and test data of the sample. In this standard, the elastic modulus (E) and the transverse compressive strength The eigenvalues are averaged; the eigenvalues of other mechanical properties are taken as the lower limit of the 75% confidence of the 5% quantile of the corresponding statistical distribution.

4 Classification

4.1 According to the pretreatment.

a) veneer lumber for wood structures without preservative, insect repellent or flame retardant treatment;

b) veneer lumber for wood structures treated with anti-corrosion, insect-repellent or flame-retardant treatment.

4.2 According to the thickness processing status.

a) veneer lumber for wood structures that are not thickened;

b) veneer lumber for wood structures with fixed thickness.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

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