2017-026 - Amending Section 7-16 and 7-18 of Article II Building Code, Chapter 7, Buildings and Building Regulations ....

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Section 903.3.5 Water supplies. Water supplies for automatic sprinkler systems shall comply with this section and the standards referenced in Section 903.3.1. The potable water supply shall be protected against backflow in accordance with the requirements of this section and the International Plumbing Code. For connections to public waterworks systems, the water supply test used for design of fire protection systems shall be adjusted to account for seasonal and daily pressure fluctuations based on information from the water supply authority and as approved by the fire code official. [F] Water supply as required for such systems shall be provided in conformance with the supply reauirements of the respective standards: however, every water -based fire protection system shall be designed with a 10 psi safety factor. Reference Section 507.4 for additional design requirements. Section 903.4, Sprinkler systems supervision and alarms shall be amended to add a second paragraph after the Exceptions to read as follows: [F] Sprinkler and standpipe system water -flow detectors shall be provided for each floor tap to the sprinkler system and shall cause an alarm upon detection of water flow for more than 45 seconds. All control valves in the sprinkler and standpipe systems except for fire department hose connection valves shall be electrically supervised to initiate a supervisory signal at the central station upon tampering_ Section 903.4.2, Alarms, shall be amended to read as follows: Section 903.4.2. Alarms. An approved audible device, located on the exterior of the building in an approved location, shall be connected to each automatic sprinkler system. Such sprinkler waterflow alarm devices shall be activated by water flow equivalent to the flow of a single sprinkler of the smallest orifice size installed in the system. Where a fire alarm system is installed, actuation of the automatic sprinkler system shall actuate the building fire alarm system. [F] The alarm device required on the exterior of the building shall be a weatherproof horn /strobe notification appliance with a minimum 75 candela strobe rating installed as close as practicable to the fire department connection. Section 905.2, Installation standard, shall be amended to read as follows: [F] 905.2 Installation standard. Standpipe systems shall be installed in accordance with this section and NFPA 14. Manual dry standpipe systems shall be supervised with a minimum of 10 psig and a maximum of 40 psis air pressure with a high /low alarm. Section 905.3, Required installations, shall be amended by adding Section 905.3.9, Buildings exceeding 10,000 sq. ft., and exceptions to read as follows: [F] 905.3.9 Buildings exceeding 10,000 sg ft In buildings exceeding 10,000 square feet in area per story and where any portion of the building's interior area is more than 200 feet (60960 mm) of travel vertically and horizontally, from the nearest point of fire department vehicle access Class I automatic wet or manual wet standpipes shall be provided. Exceptions: 1. Automatic dry and semi - automatic dry standpipes are allowed as provided for in NFPA 14 2. R -2 occupancies of four stories or less in height having no interior corridors Section 905.4, Location of Class I standpipe hose connections, shall be amended to read as follows: Section 905.4, Location of Class I standpipe hose connections. Class I standpipe hose connections shall be provided in all of the following locations: [F] 1. In every required inteFieF -exit stairway, a hose connection shall be provided for each story above and below grade plane. Hose connections shall be located at an intermediate landing between stories, unless otherwise approved by the fire code official. 2. On each side of the wall adjacent to the exit opening of a horizontal exit. Exception: Where floor areas adjacent to a horizontal exit are reachable from an interior exit stairway hose connection by a 30 -foot (9144 mm) hose stream from a nozzle attached to 100 feet (30 480 mm) of hose, a hose connection shall not be required at the horizontal exit. 7 2015 IBC Amendments