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// CODE SNIPPET

720.3 Exposed Installation

Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 720 Thermal- And Sound-Insulating Materials > 720.3 Exposed Installation
JUMP TO FULL CODE CHAPTER
Insulating materials, where exposed as installed in buildings of any type of construction, shall have a flame spread index of not more than 25 and a smoke-developed index of not more than 450.
Exception: Cellulosic fiber loose-fill insulation complying with the requirements of Section 720.6 shall not be required to meet a flame spread index requirement but shall be required to meet a smoke-developed index of not more than 450 when tested in accordance with CAN/ULC S102.2.

720.3.1 Attic Floors

Exposed insulation materials installed on attic floors shall have a critical radiant flux of not less than 0.12 watt per square centimeter when tested in accordance with ASTM E970.

Related Code Sections


720.3 Fire and Smoke Protection Features, Exposed Installation
Insulating materials, where exposed as installed in buildings of any type of construction, shall have a flame spread index of not more than 25 ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 720 Thermal- And Sound-Insulating Materials > 720.3 Exposed Installation
720.3 Fire and Smoke Protection Features, Exposed Installation
Insulating materials, where exposed as installed in buildings of any type of construction, shall have a flame spread index of not more than 25 ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 720 Thermal- And Sound-Insulating Materials > 720.3 Exposed Installation
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300.39 Wiring Methods and Materials, Braid-Covered Insulated Conductors — Exposed Installation
Exposed runs of braid-covered insulated conductors shall have a flame-retardant braid. If the conductors used do not have this protection, a flame ...
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