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// CODE SNIPPET

509.4 Separation and Protection

Building Code 2018 of Illinois > 5 General Building Heights and Areas > 509 Incidental Uses > 509.4 Separation and Protection
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The incidental uses listed in Table 509 shall be separated from the remainder of the building or equipped with an automatic sprinkler system, or both, in accordance with the provisions of that table.

509.4.1 Separation

ILLUSTRATION
Where Table 509 specifies a fire-resistance-rated separation, the incidental uses shall be separated from the remainder of the building by a fire barrier constructed in accordance with Section 707 or a horizontal assembly constructed in accordance with Section 711, or both. Construction supporting 1-hour fire barriers or horizontal assemblies used for incidental use separations in buildings of Type IIB, IIIB and VB construction is not required to be fire-resistance rated unless required by other sections of this code.

509.4.2 Protection

Where Table 509 permits an automatic sprinkler system without a fire barrier, the incidental uses shall be separated from the remainder of the building by construction capable of resisting the passage of smoke. The walls shall extend from the top of the foundation or floor assembly below to the underside of the ceiling that is a component of a fire-resistance-rated floor assembly or roof assembly above or to the underside of the floor or roof sheathing, deck or slab above. Doors shall be self- or automatic-closing upon detection of smoke in accordance with Section 716.2.6.6. Doors shall not have air transfer openings and shall not be undercut in excess of the clearance permitted in accordance with NFPA 80. Walls surrounding the incidental use shall not have air transfer openings unless provided with smoke dampers in accordance with Section 710.8.

509.4.2.1 Protection Limitation

Where an automatic sprinkler system is provided in accordance with Table 509, only the space occupied by the incidental use need be equipped with such a system.

Related Code Sections


509.4 General Building Heights and Areas, Separation and Protection
The incidental uses listed in Table 509 shall be separated from the remainder of the building or equipped with an automatic sprinkler system ...
Building Code 2018 of Illinois > 5 General Building Heights and Areas > 509 Incidental Uses > 509.4 Separation and Protection
509.4 General Building Heights and Areas, Separation and Protection
The incidental uses specified in Table 509.1 shall be separated from the remainder of the building or equipped with an automatic sprinkler system ...
Building Code 2021 of Illinois > 5 General Building Heights and Areas > 509 Incidental Uses > 509.4 Separation and Protection
(1) Equipment for General Use, Separate Overcurrent Protection
Where the motor branch-circuit short-circuit and ground-fault protective device does not provide protection in accordance with 430.72(B)(2), separate ...
National Electrical Code 2017 of Illinois > 4 Equipment for General Use > 430 Motors, Motor Circuits, and Controllers > 430.72 Overcurrent Protection > (B) Conductor Protection > (1) Separate Overcurrent Protection
(1) Equipment for General Use, Separate Overcurrent Protection
Where the motor branch-circuit short-circuit and ground-fault protective device does not provide protection in accordance with 430.72(B)(2), separate ...
National Electrical Code 2020 of Illinois > 4 Equipment for General Use > 430 Motors, Motor Circuits, and Controllers > 430.72 Overcurrent Protection > (B) Conductor Protection > (1) Separate Overcurrent Protection
509.4.2.1 General Building Heights and Areas, Protection Limitation
Where an automatic sprinkler system is provided in accordance with Table 509.1, only the space occupied by the incidental use need be equipped ...
Building Code 2021 of Illinois > 5 General Building Heights and Areas > 509 Incidental Uses > 509.4 Separation and Protection > 509.4.2 Protection > 509.4.2.1 Protection Limitation
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