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LY/T 1158-2018: Rafter log
Status: Valid LY/T 1158: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1158-2018 | English | 149 |
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3 days [Need to translate]
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Rafter log
| Valid |
LY/T 1158-2018
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| LY/T 1158-2008 | English | 279 |
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3 days [Need to translate]
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Rafter log
| Obsolete |
LY/T 1158-2008
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| LY/T 1158-1994 | English | 199 |
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2 days [Need to translate]
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(Timber rafters)
| Obsolete |
LY/T 1158-1994
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PDF similar to LY/T 1158-2018
Basic data | Standard ID | LY/T 1158-2018 (LY/T1158-2018) | | Description (Translated English) | Rafter log | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B68 | | Word Count Estimation | 5,544 | | Date of Issue | 2018-12-29 | | Date of Implementation | 2019-05-01 | | Older Standard (superseded by this standard) | LY/T 1158-2008 | | Regulation (derived from) | National Forestry and Grassland Bureau Announcement No.18 of 2018 | | Issuing agency(ies) | State Forestry Administration | LY/T 1158-2008: Rafter log---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.
Rafter log
ICS 79.040
B68
People's Republic of China Forestry Industry Standard
Replacing LY/T 1158-1994
Coffin
Released on.2008-09-03
2008-12-01 implementation
State Forestry Administration released
Foreword
This standard is a revision of LY/T 1158-1994 "Coffin".
The main modifications and additions to the original standard in this standard are.
--- Unify tree species into coniferous broadleaf species;
---The length of the gauge. the original 1m ~ 3m, changed to 1m ~ 6m;
--- Modified long-term tolerances;
---The gauge diameter is 3cm~12cm, but 3cm is determined to be the actual size;
--- Modified the material indicators such as heartwood decay, insect eyes, and bending;
--- Further improved the coffin volume table.
Appendix A of this standard is a normative appendix.
This standard replaces LY/T 1158-1994 from the date of implementation.
This standard was proposed by the State Forestry Administration.
This standard is under the jurisdiction of the China Timber Standardization Technical Committee.
This standard is interpreted by the China Timber Standardization Technical Committee.
This standard was drafted. Baishishan Forestry Bureau of Jilin Province.
The main drafters of this standard. Su Zhaofeng, Wu Jun, Sun Shiren, Hu Bingtao, Xie Qunsheng, Li Jianshun, Wang Cheng, Li Li, Zhang Tonglin, Tian Yonggang,
Xie Qunjie, Li Shujuan, Jiang Haibo, Wang Jingchang.
The previous versions of the standards replaced by this standard are.
---LY 126-1965;
---GB 143-1984;
---LY/T 1158-1994.
Coffin
1 Scope
This standard specifies the tree species, size, material index and volume calculation of the coffin.
This standard applies to the roof structure of the residential building directly using logs.
2 Normative references
The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all
Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study
Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.
GB/T 144 log inspection
GB 4814 original wood product table
GB/T 17659.1 Sawmills for batch inspection and sampling - Part 1 . s
LY/T 1511 Log Product Marking
3 requirements
3.1 Tree species
Needles, broadleaf species.
3.2 size
3.2.1 Length of gauge. 1m ~ 6m, less than 2m, upgraded by 0.1m, from 2m or more, according to 0.2m. Long-term tolerance. less than 2m,
-1cm, from 2m or more,
-2cm.
3.2.2 Inspection diameter. 3cm~12cm, 3cm is the actual size, according to 1cm, when the actual size is less than 1cm, the foot is 0.5cm.
Less than 0.5cm.
3.3 Material Specifications
Material indicators are shown in Table 1.
Table 1 Material Specifications
Defect name check method limit
The missing section is not allowed in the entire length of the material.
The sapwood is not allowed to be allowed in the entire length of the material.
The heart of the decayed decay must not exceed the diameter of the gauge head, the head is 10%
The number of insect eyes up to 1m long shall not exceed 2
The maximum bending arch height of the bend shall not exceed 1% of the length of the gauge.
The length of the outer cover shall not exceed 30% of the length of the gauge
The depth of trauma and partial dryness shall not exceed 10% of the diameter of the gauge
Note. Defects not listed in the above table are not counted.
4 Inspection methods
4.1 Size inspection, material evaluation
According to the relevant provisions of GB/T 144.
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