BS ISO/TR 12470:1998

1 Scope
2 Common factors
    2.1 Manufacture and materials
    2.2 Moisture content
    2.3 Increasing size
3 Loadbearing elements
    3.1 Beams
    3.2 Columns
    3.3 Floors
    3.4 Walls
4 Non-loadbearing elements
    4.1 Vertical partitions
    4.2 Ceiling membranes - Horizontal
    4.3 Doors - Hinged and pivoted leaves
    4.4 Lift landing doors - Centre opening and two-speed
          lift landing doors
    4.5 Rolling shutters
    4.6 Glazed elements
5 Components contributing to the fire resistance of
    elements
    5.1 Suspended ceilings
    5.2 Insulating systems
6 Service installations
    6.1 Ducts
    6.2 Dampers
    6.3 Penetration seals
7 Future evolution
    7.1 Improvement of testing methodologies
    7.2 Mathematical modelling of thermal and mechanical
          response
    7.3 Expert system based upon the use of performance
          coefficients
Annex A: Summary of general practices in various countries
as far as interpolation and extrapolation are concerned
Annex B: Current practices in various countries
Annex C: Bibliography

The two possible ways to ensure that a modified element will have a good possibility of obtaining the same fire rating as that of the original tested specimen is with direct and extended applications of test results. In both cases the applications only refer to the fire rating that the building element can expect to reach if it were to be tested in a furnace in accordance with the standard fire used for the reference test.