BS 5756:1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Specification for visual strength grading of hardwood
Hardcopy , PDF
31-05-2007
English
15-05-1997
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Committees responsible
Foreword
Specification
1 Scope
2 Normative references
3 Definitions
5 Measurement of characteristics
6 Requirements for the Structural Tropical Hardwood (HS)
grade
7 Requirements for the Structural Temperate Hardwood (TH1,
TH2 and THA, THB) grades
8 Marking of visually strength graded timber
Annexes
A (normative) Determination of slope of grain
B (normative) The control and supervision of strength
grading operations
C (informative) Species marking
Tables
1 Permissible limits for Structural Tropical Hardwood (HS)
visual strength grades
2 Permissible limits for General Structural Temperate
Hardwood (TH1 and TH2) visual strength grades
3 Permissible limits for Heavy Structural Temperate Hardwood
(THA and THB) visual strength grades
Figures
1 Knots
2 Measurement of bow, spring and twist
3 Wane
4 Example of a mark on visually strength graded hardwood
A.1 Swivel handled scribe for determination of slope of grain
A.2 Use of scribe
A.3 Measurement of slope of grain
List of references
Specifies the grading requirements for one grade of structural tropical hardwood and four grades of structural temperate hardwood.
| Committee |
B/518
|
| DevelopmentNote |
Supersedes 95/107143 DC and BS 5756(1980) (08/2005)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| ISO 9709:2005 | Structural timber Visual strength grading Basic principles |
| BS 5268-2:1996 | Structural use of timber Code of practice for permissible stress design, materials and workmanship |
| BS EN 519:1995 | Structural timber. Grading. Requirements for machine strength graded timber and grading machines |
| BS EN 386:2001 | Glued laminated timber. Performance requirements and minimum production requirements |
| BS EN 518:1995 | Structural timber. Grading. Requirements for visual strength grading standards |
| BS 7359:1991 | Nomenclature of commercial timbers including sources of supply |
| BS 6100-4.2:1984 | Glossary of building and civil engineering terms. Forest products Sizes and quantities of solid timber |
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