Revised Standard from Last Update.

1. SCOPE

1.1 This standard specifies the method of test and determination of fire resistance rating of through penetration firestops of various materials and construction that are intended for use in openings in fire resistive wall or floor-ceiling assemblies, or both.

1.2 The standard covers the requirements to expose the firestop assembly to a standard time and temperature curve as per IS/ISO 834-1 followed by a hose stream test. Fire resistance ratings are then provided on the following criteria:

a) Integrity, in terms of the duration of time, the firestop resists fire before the first development of through opening or flaming on the unexposed side, and acceptable performance under hose stream test.

b) Insulation performance of the penetration sealing system, and acceptable performance under hose stream test.

1.3 This standard does not specify method of test to evaluate the influence of inclusion of penetrations and sealing systems on the load bearing capacity of the fire separating elements nor does it specify method to check suitability of firestop assemblies for use after exposure.

1.4 This standard also does not specify method of test to evaluate the ability of the firestop to withstand stresses induced by the movement or displacement of the penetrants.

NOTE - A guidance on providing engineering judgement based on test is given in Annex A for information only.

2. REFERENCES

The standards listed below contain provisions which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of these standards:

IS/ISO 834-1 : 1999 Fire-resistance tests — Elements of building construction: Part 1 General requirements

903 : 1993 Specification for fire hose delivery couplings branch pipe, nozzles and nozzle spanner (fourth revision)

8757 : 1999 Glossary of terms associated with fire safety (first revision)