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GB/T 4823-2013Defects in sawn timber (English PDF)

锯材缺陷

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 12, 2013

Implementation date

April 11, 2014

Scope

GB/T 4823-2013 is the English-translated version of 锯材缺陷.

GB/T 4823-2013 is the Chinese standard "Defects in sawn timber". Its scope clause reads: This standard specifies the terms and definitions of defects sawn timber, classification, basic calibration and calculation methods.

This standard applies to conifers and hardwoods sawn visible defects. Its clauses include terms and definitions.

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Document preview — GB/T 4823-2013

National Standard of the People's Republic of China

ICS: 79.040
Classification: B 69
Replacing: GB/T 4823-1995

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

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Timber defect classification
5 basic calibration and calculation methods
References

1 Scope

This standard specifies the terms and definitions of defects sawn timber, classification, basic calibration and calculation methods.

This standard applies to conifers and hardwoods sawn visible defects.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 4822 Test sawmills

GB/T 11917 lumber term process

3 Terms and Definitions

GB/T 4822, GB/T 11917 and defined by the following terms and definitions apply to this document.

3.1 Growth defects

Wood produced in the growth process defects.

3.1.1 Setsuko knot

Contained in the timber portion of the interior branches.

3.1.1.1 Students classified according to the degree of even

3.1.1.1.1 Articulated intergrownknot

Setsuko is closely linked with the surrounding wood, or even most of the raw, hard, normal structure shown in Figure 1.

1 articulated

3.1.1.1.2 Dead knots deadknot

Setsuko with the surrounding wood is not even born, or most do not even born in sawmills sometimes loose or fall off the formation of voids (holes or Section Section eyes), such as […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 26 pages — is available in the English PDF.

Referenced standards

Cited by

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Editions of GB/T 4823

Edition	Title	Revision	Status
GB/T 4823-2013	Defects in sawn timber	current edition	Current
GB/T 4823-1995	Defects in sawn timber	previous edition	Superseded

This page sells the current edition, GB/T 4823-2013. Earlier editions are listed for reference only.

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