1 Scope
This document specifies a large-scale fire test method for measuring the heat release
rate (HRR) and the smoke-production rate (SPR) of wall systems. The fire scenario
covered in this document is representative of severe fires originating in near wall
or corner locations of an exterior or interior wall construction. A severe fire scenario
is defined that imparts a heat flux on the order of 100 kW/m 2 to the wall systems. These include exterior fire scenarios such as dumpster, balcony
storage fires, and vehicle fires originating outside buildings. Fires caused by combustible
storage inside unsprinklered or inadequately sprinklered occupancies, such as warehouse
and manufacturing occupancies, represent a few examples of severe interior fires.
This document measures the HRR and SPR in accordance with ISO 24473 . This document also provides guidelines for heat release and smoke production performance
limits, developed and used for risk evaluation by the insurance industry.
The test method is not applicable to scenarios where a fire initiates within an air
cavity, if present, of an exterior wall system. The test method does not incorporate
a window structure and is therefore not applicable to fire spread hazards resulting
from inadequately protected window openings in a post-flashover fire scenario.
Open preview (PDF)Reaction to fire tests. Parallel panel test method for wall systems. Measurement of heat release and smoke production