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"907.6.6 Monitoring. Fire alarm systems required by this chapter or <br />by the International Building Code shall be monitored by an approved <br />supervising station in accordance with NFPA 72. [F] See 907.6.3 for the <br />required information transmitted to the supervising station." <br />The Exceptions will remain unchanged. <br />Section 909, SMOKE CONTROL SYSTEMS, shall be amended to add Section <br />909.22, Stairway or Ramp Pressurization Alternative, to read as follows: <br />"909.22 Stairway or Ramp Pressurization Alternative. Where the <br />building is equipped throughout with an automatic sprinkler system in <br />accordance with Section 903.3.1.1 and the stair pressurization alternative is <br />chosen for compliance with Building Code requirements for a smokeproof <br />enclosure, interior exit stairways or ramps shall be pressurized to a <br />minimum of 0.10 inches of water (25 Pa) and a maximum of 0.35 inches of <br />water (87 Pa) in the shaft relative to the building measured with all interior <br />exit stairway and ramp doors closed under maximum anticipated conditions <br />of stack effect and wind effect. Such systems shall comply with Section 909, <br />including the installation of a separate fire - fighter's smoke control panel as <br />per Section 909.16, and a Smoke Control Permit shall be required from the <br />fire department as per Section 105.7. <br />"909.22.1 Ventilating equipment. The activation of <br />ventilating equipment for the stair or ramp pressurization system <br />shall be by smoke detectors installed at each floor level at an <br />approved location at the entrance to the smokeproof enclosure. When <br />the closing device for the stairway or ramp shaft and vestibule doors <br />is activated by smoke detection or power failure, the mechanical <br />equipment shall activate and operate at the required performance <br />levels. Smoke detectors shall be installed in accordance with Section <br />907.3. <br />"909.22.1.1 Ventilation Systems. Smokeproof enclosure <br />ventilation systems shall be independent of other building ventilation <br />systems. The equipment, control wiring, power wiring and ductwork <br />shall comply with one of the following: <br />"1. Equipment, control wiring, power wiring and ductwork shall be <br />located exterior to the building and directly connected to the <br />smokeproof enclosure or connected to the smokeproof enclosure <br />by ductwork enclosed by not less than 2 -hour fire barriers <br />constructed in accordance with Section 707 of the Building Code <br />or horizontal assemblies constructed in accordance with Section <br />711 of the Building Code, or both. <br />33 <br />