LY/T 3182-2020Technical requirements for wood and bamboo products in forest ecotourism destinations (English PDF)
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Issued by
State Forestry and Grassland Administration
Level / Type
National · Recommended
Issue date
March 30, 2020
Implementation date
October 1, 2020
Scope
LY/T 3182-2020 (Technical requirements for wood and bamboo products in forest ecotourism destinations) is available as an English-translated PDF.
LY/T 3182-2020 — This standard specifies the basic requirements, specific requirements, test methods and qualification judgments for wood (bamboo) products used in forest eco-tourism areas.
This standard is applicable to wood (bamboo) products used for wood (bamboo) facilities in forest eco-tourism areas.
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Document preview — LY/T 3182-2020
National Standard of the People's Republic of China
- ICS
- 91.080.20
- Classification
- P 23
Issued by: State Forestry and Grassland Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Basic requirements
- 5 Specific requirements for timber and bamboo facilities
- 6 Test method
- 7 Qualification
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the State Forestry and Grassland Administration.
This standard is under the jurisdiction of the National Timber Standardization Technical Committee Structural Timber Sub-Technical Committee (SAC/TC41/SC4).
Drafting organizations of this standard. Research Institute of Wood Industry, Chinese Academy of Forestry, South China Agricultural University, Beijing Tsinghua Tongheng Planning and Design Research Institute Research Institute Co., Ltd., Inner Mongolia Autonomous Region Forestry Monitoring and Planning Institute, National Engineering Research Center for Timber Industry, Forestry Industry of the State Forestry and Grassland Administration Industry Planning and Design Institute, Tsinghua University, Zhejiang Academy of Forestry, Nanjing Forestry University, International Bamboo and Rattan Organization, Hangzhou Dasuo Technology Co., Ltd.
Company, Beijing Forestry University, National Quality Supervision and Inspection Center for Wood-based Panels and Wood and Bamboo Products, Torch High-Tech Industry Development Center of the Ministry of Science and Technology, Hubei Jiuling Smart Home Co., Ltd., Qian'an Dashu Industry Co., Ltd., Dalian Fangyuan Wooden Villa Manufacturing Co., Ltd., Wuhan Dragon Zhu Wooden House Wood Structure Co., Ltd., Manzhouli Lianzhong Wood Industry Co., Ltd., Suzhou Fitwell Wood Structure House Co., Ltd., Tianjin Jia Yu Industry and Trade Co., Ltd., Beijing Hyde Log House Co., Ltd.
1 Scope
This standard specifies the basic requirements, specific requirements, test methods and qualification judgments for wood (bamboo) products used in forest eco-tourism areas.
This standard is applicable to wood (bamboo) products used for wood (bamboo) facilities in forest eco-tourism areas.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 144 Log Inspection GB/T 153 Sawn timber of conifers GB/T 4817 Hardwood sawn timber GB/T 6491 sawn timber dry quality GB/T 8625 Fire resistance test method for building materials GB/T 9758 Determination of soluble metal content in paints and varnishes GB/T 9846 Universal Plywood GB/T 13942.1 Wood Durability Part 1: Laboratory Test Method for Natural Corrosion Resistance GB/T 13942.2 Wood Durability Performance Part 2: Field Test Method for Wood Natural Corrosion Resistance GB/T 14074 Wood adhesive and resin inspection method GB 18580 The limit of formaldehyde emission in wood-based panels and products of interior decoration materials GB/T 23229 Analysis method of water-borne wood preservative GB/T 24508 Wood Plastic Floor GB/T 26899 Glulam for structure GB/T 27651 Classification and requirements for the use of preservative wood GB/T 30364 Restructuring bamboo flooring GB/T 33041 China's terrestrial wood decay and termite hazard classification GB 50005 Wood Structure Design Standard GB 50016 Code for fire protection of building design GB 50222 Code for fire protection of building interior decoration design LY/T 1861 Outdoor wooden floor LY/T 2381 Basic requirements for wooden materials used in structures ISO.20152-1 Basic requirements of bond performance of wood structural adhesives of timber structures)
3 Terms and definitions
The following terms and definitions apply to this document.
Forest ecotourism destinations Forest eco-tourism destinations are based on natural scenery resources and carry out sightseeing, leisure and vacation, fitness and health, cultural education, etc.
Place of tourist activity.
Wood/Bamboo Products Wood (bamboo) timber products refer to all kinds of products made with timber and bamboo as the main or partial components, including logs, raw bamboo, sawn timber, Glulam, plywood, particle board, wood-plastic composite, recombined timber, etc.
Infrastructural Facilities from Wood/Bamboo Products in order to meet the needs of tourists in traveling and sightseeing, the general term for various facilities constructed using wood (bamboo) materials and products, including houses Buildings, gates, corridors, pavilions, plank roads, pedestrian landscape bridges, outdoor tables, chairs and stools, signs, etc.
4 Basic requirements
4.1 Wood (bamboo) products should be accompanied by product description materials, including manufacturer, product name, size, grade, and wood source Legality and other information.
4.2 The air-dry moisture content of wood (bamboo) products should meet the requirements of the product's use environment. For logs with a minimum section size of 0.3m or more, for square timber, the moisture content at a depth of 20mm on the surface should not be greater than 12%.
4.3 The grade of material shall be specified according to the following product categories.
a) The material grade of log products should reach the second-class and above grade specified in GB/T 144;
b) The material grade of sawn timber products of conifers should reach the second-class and above grade specified in GB/T 153, and the material grade of sawn timber products of hardwoods should reach the second-class and above level specified in GB/T 4817;
c) The appearance quality grade of structural laminated timber products should reach the second-class and above grades specified in GB/T 26899.
d) The appearance quality of plywood products should reach the qualified product and above level specified in GB/T 9846.
4.4 Wood (bamboo) products should be environmentally friendly antiseptic and insect repellents such as quaternary ammonium copper (ACQ) or copper azoles (CuAz), and should not be used Organic halides, coal tar, creosote, pentachlorophenol, organotin compounds, chromium and arsenic compounds and other antiseptics and insecticides.
5 Specific requirements for timber (bamboo) facilities
5.1 Housing construction
5.1.1 Load-bearing components
5.1.1.1 The wood (bamboo) products used for load-bearing components shall be structural materials, which conform to the regulations of LY/T 2381.If the mechanical design of structural products refers to when there is no corresponding standard for the marked value, the product manual shall give the design value of each mechanical index. When the mechanical design indexes of wood (bamboo) products need to be adjusted, the adjustment factor should be determined based on experiments.
5.1.1.2 If wood (bamboo) products are glued products, the adhesive used should comply with ISO.20152-1.
5.1.1.3 For wood (bamboo) products used in outdoor load-bearing components, the anti-corrosion and insect-proof requirements shall meet the requirements of Table 1 and Table 2 respectively. Chinese terrestrial wood the division of timber decay and termite hazard levels is based on the provisions of GB/T 33041.Penetration and drug loading of different use categories are in accordance with GB/T 27651 carried out.
5.1.2.2 The combustion performance of wood (bamboo) products used in interior decoration should meet the requirements of GB 50222.
5.1.2.3 The combustion performance of wood (bamboo) products used in the exterior wall decoration layer should meet the requirements of GB 50016.
5.1.3 Environmental performance
For wood (bamboo) products used indoors, the formaldehyde emission limit shall meet the requirements in Table 3.
5.2.1 Load-bearing components
5.2.1.1 The wood (bamboo) products used for load-bearing components shall be structural materials, which conform to the regulations of LY/T 2381.If the mechanical design of structural products refers to when there is no corresponding standard for the marked value, the product manual shall give the design value of each mechanical index. When the mechanical design indexes of wood (bamboo) products need to be adjusted, the adjustment factor should be determined based on experiments.
5.2.1.2 If the wood (bamboo) product is a glued product, the adhesive used should comply with various regulations corresponding to the use environment 3 in ISO.20152-1.
5.2.2 The anti-corrosion and anti-insect requirements for wood (bamboo) products used in gate towers, corridors, pavilions and pavilions shall meet the requirements of Table 2 and Table 3 respectively.
5.3 Plank road, trail, terrace
5.3.1 For plank roads, trails and terraces with the following conditions, the wood (bamboo) products used should be structural materials and comply with LY/T 2381.
1) Overhead laying is 0.5m above the ground (water) surface;
2) There are deep trenches, deep rivers (sea), cliffs and other dangerous terrain environments within 2m;
3) Use in crowded places such as large gatherings or group activities.
5.3.2 Plank roads, trails and terraces should be laid overhead. Untreated wood and wood-plastic composite materials should not be used for laying in direct contact with the ground. Whether or not the physical and mechanical properties of various wood (bamboo) products under the same laying conditions shall meet the requirements of Table 4.If it is a glued product, the adhesive used should meet Various regulations corresponding to use environment 3 in ISO.20152-1.
5.3.3 The wooden floor products used on the terrace should meet the LY/T 1861 regulations, and the reconstituted bamboo floor products should meet the GB/T 30364 regulations.
5.3.4 For wood (bamboo) products used on plank roads, trails and terraces, the anti-corrosion and insect-proof requirements shall meet the requirements of Table 5 and Table 6, respectively.
5.4 Pedestrian landscape bridge
5.4.1 Main structure
5.4.1.1 The wood (bamboo) products used in the main structure shall be structural materials, which conform to the regulations of LY/T 2381.If the mechanical design of structural products refers to when there is no corresponding standard for the marked value, the product manual shall give the design value of each mechanical index. When the mechanical design indexes of wood (bamboo) products need to be adjusted, the adjustment factor should be determined based on experiments.
5.4.1.2 If the wood (bamboo) products used in the main structure are glued products, the adhesive used should comply with the use environment 3 in ISO.20152-1 Corresponding various regulations.
5.4.2 For wood (bamboo) products used in pedestrian landscape bridges, the anti-corrosion and insect-proof requirements shall meet the requirements of Table 5 and Table 6, respectively.
5.5 Outdoor tables, chairs and stools
5.5.1 Non-structural wood (bamboo) products such as natural anticorrosive wood and heat-treated wood can be used for outdoor tables, chairs and stools. Natural resistance of untreated wood Corrosion performance level should reach level II and above specified in GB/T 13942.1 or GB/T 13942.2.
5.5.2 Wood (bamboo) products and outer coatings should not contain soluble heavy metal compounds.
5.6 Signage
Signs can use non-structural wood (bamboo) products such as natural anti-corrosion wood, heat-treated wood, and reconstituted wood. Untreated wood the natural corrosion resistance should reach the level II and above specified in GB/T 13942.1 or GB/T 13942.2.
6 Test method
6.1 Physical and mechanical properties
Physical and mechanical performance testing should be carried out in accordance with relevant product or test method standards.
6.2 Gluing performance
The various performance index tests of adhesives are carried out in accordance with ISO.20152-1 regulations.
6.3 Environmental performance
6.3.1 Soluble heavy metals
The test method of soluble heavy metals is carried out in accordance with the provisions of GB/T 9758.
6.3.2 Free formaldehyde
The detection method of free formaldehyde should be carried out in accordance with GB 18580.
6.3.3 Free phenol
The free phenol detection method should be carried out in accordance with GB/T 14074.
6.4 Anti-corrosion performance
The natural durability testing method shall be carried out in accordance with the provisions of GB/T 13942.1 and GB/T 13942.2.The method of testing the loading capacity of preservatives should be According to GB/T 23229 regulations.
6.5 Combustion performance
The combustion performance test shall be carried out in accordance with GB/T 8625.
7 Qualification judgment
7.1 The products shall be sampled and inspected separately according to specifications and grade categories, and the sampled quantity shall be representative. The inspection items are stipulated in this standard content.
7.2 When the sampled product has one of the following conditions, double sampling re-inspection should be carried out.
1) Design products with re-inspection requirements;
2) There are agreed products;
3) When any related party disagrees with the inspection value of the sample and the authenticity of the sample.
7.3 Judgment
If all the indicators specified in this standard meet the requirements of the standard, the batch of products is judged to be qualified. An indicator in the test result is unqualified, the unqualified items shall be selected and re-inspected for the second time, and the performance values of the second time shall all meet the standard requirements, otherwise the batch of products shall be deemed unqualified.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB 18580-2025 — Decorating and refurbishing materials for interior use - Limit on formaldehyde emission of wood-based panels and their products
GB 50005-2017 — Standard for design of timber structures
GB 50016-2014 — Code for Fire Protection Design of Buildings (2018 Edition)
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