BS 1142:1989
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for fibre building boards
Hardcopy , PDF
15-04-1999
English
31-08-1989
Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Dimensional tolerances
4. Flame and fire retardant boards
5. Physical and mechanical properties
6. Marking
Appendices
A. Methods of test
B. Verification of compliance
C. Common uses of fibre building boards in the
construction industry
D. Recommendations for transportation, storage
and conditioning of fibre building boards
Tables
1. Permissible deviations in length, width and
thickness within and between boards of hardboard,
medium density fibreboard (MDF), mediumboard and
softboard
2. Summary of test methods and acceptance levels
given in tables 3 to 6
3. Test levels for hardboard
4. Test levels for mediumboard
5. Test levels for MDF
6. Test levels for softboard
7. Board identification, types and colours of stripes
8. Number of test specimens required when testing
boards
9. Acceptance levels for postmanufacture batch
testing for five typical batch sizes
10. Guidance on the use of fibre building boards in
the construction industry
Figures
1. Subdivision into test pieces
2. Measurement of panel length and width
3. Measurement of edge straightness
4. Measurement of squareness
5. Measurement of length and width
6. Measurement of thickness for density determination
7. Measurement of increase in length
8. Measurement of thickness for dimensional changes
associated with changes in relative humidity
9. Test rig for determining bending strength
10. Thickness and width determination for bending
strength test
11. Test rig for measuring deflection
12. Load deflection curve for modulus of elasticity
13. Apparatus for determination of transverse internal
bond of the board
14. Apparatus for determination of extractable
formaldehyde
15. Parallel shank screw 38 mm x 4.1 mm with two
start thread
16. Support for test specimens for determination of
surface absorption
17. Typical mounting of test specimen for determination
of recovery and compression
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