Jack, all the code references, In order, 1) When Required, Fire Service and Occupant Evac 2) Sprinkler Prohibitions 3) Machine Room protection
403.5.2 Additional exit stairway. For buildings other than Group R-2 that are more than 420 feet (128 000 mm) in building height, one additional exit stairway meeting the requirements of Sections 1009 and 1022 shall be provided in addition to the minimum number of exits required by Section 1021.1. The total width of any combination of remaining exit stairways with one exit stairway removed shall be not less than the total width required by Section 1005.1. Scissor stairs shall not be considered the additional exit stairway required by this section. Exception: An additional exit stairway shall not be required to be installed in buildings having elevators used for occupant self-evacuation in accordance with Section 3008. 403.6.1 Fire service access elevator. In buildings with an occupied floor more than 120 feet (36 576 mm) above the lowest level of fire department vehicle access, no fewer than two fire service access elevators, or all elevators, whichever is less, shall be provided in accordance with Section 3007. Each fire service access elevator shall have a capacity of not less than 3500 pounds (1588 kg). 403.6.2 Occupant evacuation elevators. Where installed in accordance with Section 3008, passenger elevators for general public use shall be permitted to be used for occupant self-evacuation. SECTION 3007 FIRE SERVICE ACCESS ELEVATOR 3007.1 General. Where required by Section 403.6.1, every floor of the building shall be served by fire service access elevators complying with Sections 3007.1 through 3007.10. Except as modified in this section, fire service access elevators shall be installed in accordance with this chapter and ASME A17.1/CSA B44. 3007.3.1 Prohibited locations. Automatic sprinklers shall not be installed in elevator machine rooms, elevator machine spaces, and elevator hoistways of fire service access elevators. SECTION 3008 OCCUPANT EVACUATION ELEVATORS 3008.1 General. Where elevators are to be used for occupant self-evacuation during fires, all passenger elevators for general public use shall comply with Sections 3008.1 through 3008.11. Where other elevators are used for occupant selfevacuation, they shall also comply with these sections. 3008.3.1 Prohibited locations. Automatic sprinklers shall not be installed in elevator machine rooms and elevator machine spaces for occupant evacuation elevators. 3006.4 Machine rooms and machinery spaces. Elevator machine rooms and machinery spaces shall be enclosed with fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both. The fire-resistance rating shall be not less than the required rating of the hoistway enclosure served by the machinery. Hope that helps, John Drucker, CET Fire Protection Subcode Official Fire / Building / Electrical Inspector New Jersey -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Fairchild, Jack Sent: Tuesday, October 15, 2013 10:46 AM To: [email protected] Subject: RE: 2012 IBC Sprinkler Prohibition Thanks John, A cursory read of the section produced a visceral response. After a little thought, I see where they are going and am not sure they went far enough. If suppression is to be removed from the machine room, the machine room should be in an easily accessible location and should be protected with a rating equivalent to the shaft without exception. Jack Fairchild -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Drucker Sent: Tuesday, October 15, 2013 10:35 AM To: [email protected] Subject: Re: 2012 IBC Sprinkler Prohibition Jack. I'm on the road so don't have code in front, check also chapter 10 means of egress occupant evac and fire service elevators, there are similar prohibitions. John Drucker - Mobile Email ----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Tue Oct 15 10:32:08 2013 Subject: 2012 IBC Sprinkler Prohibition Reference: 2012 IBC 3007.3.1. Is this the only section of the IBC where sprinkler are specifically prohibited from a location? Why would they do this? In my mind this just stirs the pot of the ol' sprinkler vs. elevator argument. 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