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  • BS 4978:1988

BS 4978:1988

Specification for softwood grades for structural use

BSI Group, 11/30/1988

Publisher: BS

File Format: PDF

$125.00$251.46


Published:30/11/1988

Pages:46

File Size:1 file

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Specifies 2 methods of grading softwood namely, visual and machine stress grading. Permissible limits of characteristics for: (a) 2 visual stress grades - General Structural (GS) and Special Structural (SS); (b) 3 laminating grades - LA, LB and LC. Requirements for machine stress grades; Machine General Structural (MGS), Machine Special Structural (MSS), M50 and M75 and Strength Classes are specified. Also includes performance requirements for machines which grade softwood.

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