3 Performance Criteria

  3.1.1 "A" class divisions, including "A" class doors

 The average unexposed-face temperature rise as determined in accordance with paragraph 8.4.1 of appendix 1 shall not be more than l40°C, and the temperature rise recorded by any of the individual unexposed-face thermocouples shall not be more than l80°C during the periods given below for each classification:

  3.1.2 "B" and "F" class divisions, including "B" and "F" class doors

 The average unexposed-face temperature rise as determined in accordance with paragraph 8.4.1 of appendix 1 shall not be more than 140°C, and the temperature rise recorded by any of the individual unexposed-face thermocouples shall not be more than 225°C during the periods given below for each classification:

 For all "A", "B" and "F" class divisions, including "A", "B" and "F" class doors, the following requirements shall be satisfied for the minimum test duration relevant to the classification (see paragraph 8.5 of appendix 1):

• .1 flaming: there shall be no flaming on the unexposed face;

• .2 cotton-wool pad: there shall be no ignition, i.e. flaming or glowing, of the cotton-wool pad when applied in accordance with paragraph 8.4.3 of appendix 1 or when used to assist evaluation of flaming (see paragraph 8.4.2 of appendix 1); and

• .3 gap gauges: it shall not be possible to enter the gap gauges into any opening in the specimen in the manner described in paragraph 8.4.4 of appendix 1.

 "A", "B" and "F" class doors are not required to be able to be opened or closed, during or after the specified test duration.

 In the case of load-bearing divisions of aluminium alloy, the average temperature of the structural core obtained by the thermocouples described in paragraph 7.7 of appendix 1 shall not rise more than 200°C above its initial temperature at any time during the minimum test duration relevant to the classification (see paragraph 8.5 of appendix 1). Where the structural core is of a material other than steel or aluminium alloy the Administration shall decide the rise in temperature which shall not be exceeded during the test duration.

 Where ceilings or linings are required to be continuous "B" class ceilings or linings, they may be tested and evaluated in accordance with appendix 4 to this part.

  3.5.1 The specimen of the "A" and "B" class constructions shall be constructed from non-combustible materials. The following exceptions are permissible:

• .1 adhesives and vapour barriers used in the construction of the specimen are not required to be non-combustible; however, they shall have low flame-spread characteristics;

• .2 sealing materials used in penetration systems;

• .3 seals for gas-, water- and weather-tight doors;

• .4 seals for windows; and

• .5 filling material within glazing systems.

 Adhesives and sealing materials used in testing of penetration systems shall be used in the actual structure. Materials mentioned in paragraphs 3.5.1.3 to 3.5.1.5 may be installed in constructions of the specimen. Such inclusions shall be stated in the test report.

 The material used in the test shall not be replaced by any other materials that have not been tested in accordance with this Code and/or accepted by the Administration.

  3.5.2 Thermal radiation through windows

  3.5.2.1 Where thermal radiation through windows is required to be limited by an Administration, the window assembly may be tested and evaluated in accordance with appendix 3 to this part.

  3.5.2.2 The cotton-wool pad need not be used on the unexposed face after the period relevant to the insulation classification of the product.