LY/T 1158-2018 English PDF

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LY/T 1158-2018: Rafter log
Status: Valid

LY/T 1158: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
LY/T 1158-2018	149	Add to Cart	3 days	Rafter log	Valid
LY/T 1158-2008	279	Add to Cart	3 days	Rafter log	Obsolete
LY/T 1158-1994	199	Add to Cart	2 days	(Timber rafters)	Obsolete

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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Older Standard (superseded by this standard): LY/T 1158-2008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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