BS 5756:2007
硬木的外观分级.规范
Visual grading of hardwood - Specification
2007-05
- 标准号
- BS 5756:2007
- 发布
- 2007年
- 发布单位
- 英国标准学会
- 替代标准
- BS 5756:2007+A1:2011
- 当前最新
- BS 5756:2007+A2:2017
- 适用范围
- This British Standard specifies a method of strength grading tropical and temperate hardwood visually for structural use. For tropical hardwoods, the permissible limits of characteristics for a single visual strength grade of timber are specified, designated “Structural Tropical Hardwood” (HS) grade. For temperate hardwoods, the permissible limits of characteristics are specified for two visual strength grades for large size timber, designated “Heavy Structural Temperate Hardwood” (THA and THB), and two visual strength grades for smaller size timber, designated “General Structural Temperate Hardwood” (TH1 and TH2). This British Standard applies to hardwoods, graded for use in the United Kingdom, for both within the United Kingdom and abroad.