This part of GB/T 9978 specifies the procedures to be followed for determining the fire resistance of loadbearing horizontal separating elements Where exposed to heating from the underside.
This part is also appropriate for loadbearing horizontal separating elements containing beams where it is not possible to test the floor or roof assembly in a representative manner without them. However, the data cannot be transferred directly one to the other.
The application of this test to other untested forms of construction is acceptable where the construction complies with the direct field of application as given in this part.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 9978. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 5907 Fundamental Terminology of Fire Protection - Part 1 )
GB/T 9978.1 Fire-resistance Tests - Elements of Building Construction Part 1: General Requirements (GB/T 9978.1-2008, ISO 834-1: 1999, MOD)
GB/T 9978.6 Fire-resistance Tests - Elements of Building Construction - Part 6: Specific Requirements for Beams (GB/T 9978.6-2008, ISO 834-6: 2000, MOD)
3 Terms and Definitions
For the purposes of this part, the terms and definitions given in GB/T 5907 and GB/T 9978.1 and the following apply.
3.1
