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// CODE SNIPPET

[F] 403.3.1 Number of Sprinkler Risers and System Design

Building Code 2018 of Illinois > 4 Special Detailed Requirements Based on Occupancy and Use > 403 High-Rise Buildings > 403.3 Automatic Sprinkler System > 403.3.1 Number of Sprinkler Risers and System Design

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Each sprinkler system zone in buildings that are more than 420 feet (128 m) in building height shall be supplied by not fewer than two risers. Each riser shall supply sprinklers on alternate floors. If more than two risers are provided for a zone, sprinklers on adjacent floors shall not be supplied from the same riser.

[F] 403.3.1.1 Riser Location

Sprinkler risers shall be placed in interior exit stairways and ramps that are remotely located in accordance with Section 1007.1.

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