1804 HEWITT AVE 2022-05-12 - Laserfiche WebLink

S E 6 I 5 13024 Beverly Park Rd, Ste 202 Mukilteo, WA 98275 www.AEGISengineering.com ENGINEERING phone (425)745-4700 fax (206)801-5797 March 14, 2019 Revised March 18, 2019 Via E-Mail: hodgesonhewitt@gmail.com New Hewitt/ Hodges Associates, LLC do Callie Alexander 2418-C California Street Everett, WA 98201 HODGES BUILDING—EVERETT,WA FLOOR/CEILING ASSEMBLIES Dear Ms. Alexander: AEGIS Engineering has been retained to provide fire protection engineering consulting regarding improvements at Hodges Building at 1804 Hewitt Avenue in Everett, Washington. The building is an existing 5-story residential structure. We understand the mechanical design involves exhaust fan ducts traveling up through the floor-ceiling assemblies. City of Everett is questioning whether the horizontal assemblies are smoke partitions or smoke barriers in accordance with applicable provisions of the IBC (2012 International Building Code as adopted and amended by State of Washington and City of Everett). Sections 710.2 and 710.4 of the IBC describe smoke partitions as walls. Therefore, the floor/ceiling assemblies in the Hodges Building are not smoke partitions. A fire-resistance rating is prescribed by IBC Sections 711.3 for horizontal assemblies separating fire areas and dwelling units. Section 711.9 states that penetrations and openings in horizontal assemblies shall be protected as required for smoke barriers only where required by other sections of the code. Section 420.3 of the IBC prescribes horizontal separation for Group R occupancies without prescribing the presence of smoke compartments or smoke barrier construction. Therefore, we conclude that horizontal assemblies at the Hodges Building do not involve smoke partitions or smoke barriers. Fire Protection • Building Code Consult • Design • En ineer