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�dpT <br /> *SPms-r-1 IFC fFt?_Fo r-A'�j <br /> James Bronder 1 <br /> From: Rybachuk, Ivan I <ivan.i.rybachuk@boeing.com> <br /> Sent: Thursday, March 16, 2017 4:13 PM <br /> To: McGuire, Peter D;James Bronder <br /> Subject: FW: B1703-001 Building 40 Tunnel Shoring <br /> Here is the response from the A&E below. (Highlighted in Yellow) <br /> Thank You! <br /> S I T E Ivan Rybachuk <br /> S E R V I C E S Construction Management- Factory <br /> Cell: (425) 367-7801 <br /> E V E R E T T ivan.i.rybachuk(&boeinq.com <br /> From: Ken Lowery [mailto:klowery@brph.com] <br /> Sent:Thursday, March 16, 2017 3:17 PM <br /> To: Rybachuk, Ivan I <ivan.i.rybachuk@boeing.com> <br /> Cc: Walter DeBoer<wdeboer@brph.com>; Ernest Maiteri <emaiteri@brph.com> <br /> Subject: RE: B1703-001 Building 40 Tunnel Shoring <br /> Good afternoon Ivan, <br /> I wanted to follow-up per the discussion below to assist you in responding back to the City of Everett. <br /> Regarding the tunnel, this is considered an exit passageway which complies with IBC section 1024, which serves as a <br /> means of egress and a circulation path. In addition, exit passageways shall be constructed (wall, floors and ceilings) with <br /> not less than a 1-hour fire-resistance rating. The tunnel itself is a concrete structure with roughly 6" minimum concrete <br /> walls. The concrete itself provides a minimum of a 1 hour rated assembly. <br /> As part of this scope of work, BRPH provided a new a steel frame system to the interior of the tunnel. This new steel <br /> framing provides support for new tools/parts being transported on the factory floor above the tunnel. It is of the <br /> understanding that the parts movement only occurs once every three days. Additionally this movement only occurs on <br /> third shift when occupancy in the factory is low. <br /> It should be noted that the steel framing is confined to the interior of the rated exit passageway (i.e. tunnel) and does <br /> not penetrate the walls of the tunnel in anyway. By being confined within the rated enclosure,the steel maintains the <br /> same fire rated protection that the exit passageway provides. <br /> Finally, the shoring steel is not needed to maintain the structural integrity of the tunnel during normal load conditions or <br /> emergency egress of the factory and does not require to have additional fire rating. <br /> I hope this helps you in your response back to the City. Please let us know if we can provide additional assistance. <br /> Regards, <br /> Ken _ - <br /> 11 <br />