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BS 5756:1997

BS 5756:1997

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for visual strength grading of hardwood

Available format(s)

Hardcopy , PDF

Superseded date

31-05-2007

Language(s)

English

Published date

15-05-1997

Publisher

British Standards Institution

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Superseded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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Hardcopy - English
PDF - English
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