British Standards Document
BS 476-20
Fire tests on building materials and structures. Method for determination of the fire resistance of elements of construction (general principles)

https://doi.org/10.3403/30296644U

BS 476-20 is maintained by FSH/21. The current release of this standard is:

BS 476-20:1987 Fire tests on building materials and structures. Method for determination of the fire resistance of elements of construction (general principles)

https://doi.org/10.3403/30296644 (published 19/12/2024)

This standard is available from the following sources:

Other historical versions of this standard document also exist: