1 SCOPE
1.1 This test method evaluates the performance of an exterior wall assembly under controlled conditions
representing the fire exposure resulting from a post flashover fire in a compartment venting through an
opening in the wall. The results may not reflect the actual performance of an exterior wall assembly under
all fire exposure conditions.
1.2 The test determines the comparative burning characteristics of exterior wall assemblies by evaluating
the following:
A Fire spread over the exterior surface;
B Heat flow from the fire plume to the exterior surface; and
C Fire spread within the test specimen.
1.3 This test method does not assess:
A The fire performance of framing details or treatments of windows, doors or other openings that
may be used in combination with the test specimen;
B The fire performance of the test specimen when exposed to the effects of an interior fire
migrating through an exterior wall assembly; and
C Loadbearing capabilities of the exterior wall.