BS EN 16737:2016 specifies a method of strength grading tropical hardwood visually for structural use.The permissible limits of characteristics for a single visual strength grade of timber are specified, designated "Structural Tropical Hardwood" (STH) grade.The method is only suitable for pieces of timber with a rectangular cross-section that is constant along their lengths.Characteristics related to durability are not covered in this standard. For some end uses, additional requirements may be specified at the time of grading, e.g. sapwood exclusion.Cross References:EN 336EN 338EN 350-2EN 384EN 844-3EN 844-9EN 844-10EN 844-12EN 1310:1997EN 1912EN 13556EN 14081-1Partially replaces BS 5756:2007+A1:2011All current amendments available at time of purchase are included with the purchase of this document.