2710 WETMORE AVE 2018-01-01 MF Import

r . .• . . � NBBJ Arthilectum Desipn Plonninp April 2, 1992 Mr. Jeffrey S. McFall Associate Engineer/Building Everett Public Works City of Everett 3200 Cedar Street Everett, WA 98201 Project: Everett Community Theater Project No. 242$4.10 Subject: Glevator Lobbies Dear leffrey: The backstage service elevator, Elevator 83, serves three levels. Section 3305 (j) of the '91 UBC requires separation of the elevator from corridors serving 30 or more occupants. Section 1706 (a)of the '91 UBC allows unprotected openings between two stories (through one floor). '[Lis building has a basement and two stories. Your letter of March 17, 1992, to Nick Chazles, advised that the "pit" or basement level had adequate protection, as shown on the 2/10/92 drawings. This can be maintained. , The second floor corridor serves as an exit for less than 30 occupants, so no vestibule is required at that level, either. Section 3305 (j), Exception 1, notes that elevator sepazations are not required at a street level lobby of a B-2 office building, if the entire street floor is sprinklered. This theater building is fuliy sprinklered at all tloors. lf this exception could be considered applicable to this first tloor situation, it appears no further vestibules wouid be needed. Please confirm if this is an acceptable resolution to the elevator vcstibule question. If it is not, please wnsider the foilowing: Section 1706 (c)of the '91 UBC appears to allow the upper two floors to have an unprotected opening between them, if the basement level is closed from them. We understand that Everett, as well as some other local jurisdictions, have in the past interpreted the code to allow such unprotected openings between two floors. The '91 UBC has only made an amendment to clarify that separation doors are allowed at the face of the elevator doors, without a vestibule between, if easily openable from the cab side. There have been no additional requirements over earlier codes, so we assume your interpretation would not change. . Aiirono (olilotnio New York Nait� (o�olina Ohio Sau1� Co� linn Was�in0ton 111 Sw�h ladton Snnt SeoMe,Wmhinplon 9AI01 17061t73�5555 Fo�17�616t1�7>'9