3003 W CASINO RD BLDG 40-21 2018-09-21

Regulatory Consultation Professional heuristic Development Equivalency Determination Technical Instruction Educational Planning March 25, 2005 Brian A. O ' Connor, P. E. Manager Everett Site - Workplace Services Shared Services Group The Boeing Company P.O. Box 3707 MC OH-56 Seattle, WA 98124-2207 Dear Mr . O'Connor: At your request, I have reviewed The Boeing Company' s proposed airlock door opening procedure for potential building code ramifications . I understand that there is a current policy that only one airlock transportation door between connected Buildings 40-21 and 40-51 and Buildings 40-36 and 40-37 respectively, are to be open at any given time. I also understand that it is currently desired that both transportation doors in a given airlock be open simultaneously for operational purposes . I have requested that The Boeing Company provide any documentation of the current policy in order to determine the concerns or rationale behind the current policy. No such documentation could be located. Assuming that the policy was based on some building code or fire code concern, that requirement would have been based on the edition of the Uniform Building or Fire Code in effect at that particular time. My evaluation of the proposed door operation procedure will be a contemporary analysis based on the 2003 Edition of the International Building Code (IBC) , the currently adopted building code in the State of Washington. Logically, the present policy originated out of the fact that the 40-37 and 40-51 buildings are Group H-2 Occupancies . The 40-21 and 40-36 buildings are part of a connected unlimited area building complex housing ordinary hazard factory-industrial uses . If the 40-37 and 40-51 buildings were also ordinary hazard occupancies, they could be considered portions of the same unlimited area building (Section 503 . 1 . 3 ) . Inasmuch as the subject buildings do not qualify for the provisions of Section 503 . 1 . 3 , they necessarily must be regarded as different buildings on the same lot . The building code provision that most closely relates to the ability to keep exterior building doors open is Section 704 . 12 (opening protection at exterior walls) . Section 704 . 12 references Section 704 . 8 for the determination of opening protective requirements based on fire separation distance (proximity to lot Post Office Box 99515, Magnolia Station, Seattle, Washington 98199 Telephone: (206) 274-9347