Name: BS 5291:1984
Brand: BSI

BS 5291:1984

Superseded

View Superseded by

Specification for manufacture of finger joints of structural softwood

Available format(s)

Hardcopy , PDF

Superseded date

15-11-1995

Language(s)

English

Published date

28-09-1984

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
Section one. General
0. Introduction
1. Scope
2. Definitions
Section two. Manufacturing requirements
3. Timber
4. Joint spacing
5. Adhesives
6. Moisture content
7. Finger cutting
8. Gluing
9. Preservative and flame retardent treatments
10. Marking
Section three. Quality control
11. General
12. Records
13. Sampling
14. Preparation of specimens
15. Testing
16. Batch acceptance requirements
Section four. Joint efficiency rating
17. General
18. Sampling
19. Preparation of specimens
20. Testing
Appendices
A. Names and species of structural softwoods
B. Assessment of joint strength for quality control
C. Glue mix slip test
D. Determination of joint efficiency rating
Tables
1. Minimum joint testing frequency during production
2. Minimum breaking stress for unjointed defect-free
    softwood
3. Guide to the efficiency ratings of some profiles
    in bending
4. Names and botanical species of structural softwoods
    to be used for finger joints
5. Factor for depth
6. Factor for moisture content
7. Factor for calculation of control limits for minimum
    and mean breaking loads
8. Values of alpha
9. Factor for density
Figures
1. Typical profile of a finger joint
2. Restrictions on knots
3. Wane and cross section of wane and edge damage
4. Arrangement of bending test apparatus on specimen
    with a finger joint at mid-span
5. Close-contact joint

Requirements for profiles, joint efficiency rating, manufacture, strength tests and quality control for joints, 7.5 to 55 mm long.

Committee	B/518
DocumentType	Standard
Pages	20
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN 385:2001 BS EN 385:1995

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