BS 5669-3:1992

Committees responsible
Foreword
Specification
1. Scope
2. References
3. Definitions
4. Classification
5. Dimensional tolerances
6. Strength, elasticity, swelling, resistance to
    impact, extractable formaldehyde and resistance
    to fungal attack
7. Freedom from foreign matter
8. Moisture content
9. Thermal conductivity
10. Surface spread of flame
11. Marking
Annex
A. (informative) Verification of compliance
Tables
1. Summary of dimensional tolerances for board types
    F1 and F2 (6 mm to 25 mm in thickness)
2. Summary of mean quality levels for board types F1
    and F2 (at 20 deg C, 65% r.h.)
3. Control chart levels for board types F1 and F2 (at
    20 deg C, 65 % r.h.)
4. Consumer's minimum acceptance limits for board types
    F1 and F2 (at 20 deg C, 65% r.h.)
5. Within-board and between-board standard deviation
    for board type F2 (at 20 deg C, 65% r.h.)
Figure
1. Measurement of length and width of board with
    profiled edges
List of references

Requirements for two types of OSB from 6 mm up to 25 mm thickness, in terms of mean quality levels for strength, stiffness, dimensional tolerances and swelling together with strength retention when exposed to water. Marking requirements also specified.