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LY/T 1069-2022: (Sawn timber air drying process regulations)
Status: Valid LY/T 1069: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1069-2022 | English | 429 |
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(Sawn timber air drying process regulations)
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LY/T 1069-2022
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| LY/T 1069-2012 | English | 839 |
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4 days [Need to translate]
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Technology rules for air drying sawn timer
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LY/T 1069-2012
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| LY/T 1069-2002 | English | 639 |
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Technology rules of air drying sawn timber
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LY/T 1069-2002
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| LY/T 1069-1992 | English | 639 |
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5 days [Need to translate]
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(Lumber air-dry process planning)
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LY/T 1069-1992
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PDF similar to LY/T 1069-2022
Basic data | Standard ID | LY/T 1069-2022 (LY/T1069-2022) | | Description (Translated English) | (Sawn timber air drying process regulations) | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B69 | | Classification of International Standard | 65.020.01 | | Word Count Estimation | 17,138 | | Date of Issue | 2022-09-07 | | Date of Implementation | 2023-01-01 | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 1069-2022: (Sawn timber air drying process regulations)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 65.020.01
CCSB90
Forestry Industry Standard of the People's Republic of China
Replace LY/T 1069-2012
Sawn timber air drying process regulations
Released on 2022-09-07
2023-01-01 Implementation
Released by the State Forestry and Grassland Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
This document replaces LY/T 1069-2012 "Sawn Timber Air Drying Process Specification". Compared with LY/T 1069-2012, the main technical
The changes are as follows.
--- Deleted the normative reference document "LY/T 1068" (see Chapter 2 of the.2012 edition);
---Change "coniferous sawn timber" to "coniferous sawn timber" (see 4.2, 5.1, 4.2, 5.1 of the.2012 edition);
---Change the "timber" in the annotation of the mobile pile foundation structure diagram to "horizontal wood" (see Figure 3, Figure 3 of the.2012 edition);
---Change "basic principles of sawn timber stacking" to "basic principles of stacking" (see 5.3, 5.3 of the.2012 edition);
--- Added wood end surface coating treatment (see 5.3.1.4);
--- Changed the spacer requirements (see 5.3.2.1, 5.3.2.1 of the.2012 edition);
---Changed the size of the spacer between the sawn timber of needles and broad-leaved trees in the stacking method (see Table 1, Table 1 of the.2012 edition);
--- Increased the size of the spacer between conifer sawn timber in the stacking method (see Table 1);
---Change "stacking with side forklift" to "stacking with forklift" in the pile size stacking method, and change "combined with chamber drying" to "drying with kiln
combined" (see Table 2, Table 2 of the.2012 edition).
Please note that some contents of this document may refer to patents. The publisher of this article assumes no responsibility for identifying patents.
This document is proposed and managed by the National Timber Standardization Technical Committee (SAC/TC41).
This document is drafted by. Heilongjiang Wood Science Research Institute, Nantong Pinmu Technology Co., Ltd., Shengyida Wood Drying Equipment Co., Ltd.
company.
The main drafters of this document. Jia Xiaoran, Liu Shanshan, Lu Lei, Zhou Yafei, Zhang Qian, Cui Xiaolei, Xu Jinquan, Cong Debao.
The previous versions of the documents replaced by this document are as follows.
---First published as LY/T 1069-1992 in.1992;
---The first revision in.2012 was LY/T 1069-2002;
---The second revision in.2012 was LY/T 1069-2012.
Sawn timber air drying process regulations
1 Scope
This document specifies the technical conditions of the board yard, the accumulation of sawn timber, and the management of the air-drying process during the air-drying process of sawn timber.
This document applies to the air drying of needle and hardwood sawn timber for various purposes.
2 Normative references
The content in the following documents constitutes the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document.
GB/T 6491-2012 Drying quality of sawn timber
GB/T 15035 Wood Drying Terms
3 Terms and Definitions
The terms and definitions defined in GB/T 15035 apply to this document.
4 Technical conditions of board yard
4.1 Site conditions
The terrain of the board yard should be flat and dry, with a drainage slope of 0.2% to 0.5%. There should be drainage ditches around the board yard to facilitate drainage.
4.2 Board yard division
According to the tree species and specifications of the sawn timber, the board yard is divided into several wood pile groups, and each wood pile group has 4 to 10 small wood piles. Vertical and horizontal between groups
Channels are separated. The longitudinal passage should be north-south, so that the front of the stack is not exposed to direct sunlight, and the longitudinal passage is parallel to the main wind direction. When the two conflict, the latter
Subject to the former, the longitudinal channel is parallel to the length direction of the stack. The layout of coniferous sawn timber piles grouped in the board yard plan is shown in Figure 1.Broad-leaved trees
The grouping configuration of sawn timber piles is shown in Figure 2.
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