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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.220 Protection against fire>13.220.50 Fire-resistance of building materials and elements>PD 476-3:2012 Classification rules for the end-use application of test results arising from BS 476-3, "Classification and method of test for external fire exposure of roofs"
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immediate downloadReleased: 2012-09-30
PD 476-3:2012 Classification rules for the end-use application of test results arising from BS 476-3, "Classification and method of test for external fire exposure of roofs"

PD 476-3:2012

Classification rules for the end-use application of test results arising from BS 476-3, "Classification and method of test for external fire exposure of roofs"

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Standard number:PD 476-3:2012
Pages:28
Released:2012-09-30
ISBN:978 0 580 72934 8
Status:Standard
DESCRIPTION

PD 476-3:2012


This standard PD 476-3:2012 Classification rules for the end-use application of test results arising from BS 476-3, "Classification and method of test for external fire exposure of roofs" is classified in these ICS categories:
  • 13.220.50 Fire-resistance of building materials and elements

This Published Document sets out a methodology for generating new classification rules for roof coverings tested in accordance with BS 476-3:1958 and BS 476-3:2004, which simplifies the specification of a roof covering in its end-use application as part of a roofing system. The document also considers the possible influences on the classification of single or multiple changes to the roof covering material and/or construction of the tested roofing system.

NOTE Applying the results of tests to an actual end-use application often requires specialist knowledge. This application is generally simplified if the tested roof covering/roofing system can be given a classification based upon the results of test(s) which is easily related to the end-use.

Where rules already exist, they are presented in Clause 4 and Clause 5.