2828 COLBY AVE 2020-06-16 - Laserfiche WebLink

r r particular the post-installed expansion anchors, should be submitted for review. See IBC Section 1901.2 and ACI 318-14 Chapter 17. The following should be considered: a. The capacities should be based on unreinforced concrete unless it can be shown that confinement of the concrete around the anchor is provided. b. The slab appears to include a light-weight topping slab that is not monolithically- constructed or adhered to the hollow-core slabs. The thickness of the topping slab should not be considered in the design. c. Detail 1/S1.4 appears to indicate that the anchors will be installed through a formed shell backed by grout fill. These conditions should be verified. If the formed shell or grout fill does not exist at this location, the connection should be revised. d. Detail 2/S1.4 appears to indicate a full depth joint between the abutting ends of the hollow-core slabs. If this occurs, then the available depth of solid concrete is not sufficient provide proposed 6-inch long anchor. In addition, the concrete block is not positively connected to the remainder of the structure and should not be used for support of the infill slab. 14.The infill area between Grids E-F/2-3 is framed by existing steel beams that support the hollow-core floor slabs. Detail 3/S1.4 indicates that the top flanges of two W14 beams will be coped and have bolts removed. Calculations substantiating their modified capacities should be submitted for review. See IBC Sections 1604.2 and 1604.4, and IEBC Section 807.4. 15. Continuing with the previous comment, Detail 3/S1.4 indicates that longitudinal reinforcement will pass through holes in the webs of the existing W14 beams. It appears that the intended load path is for the W14 beam end to hang off the reinforcement in the concrete beam. This is not an acceptable load path to transfer loads into the concrete beam. The connection should be revised. See IBC Sections 1604.4 and 1901.2. In order for the processing of your application to continue, it will be necessary to provide the Building Division with two new sets of revised construction documents reflecting the corrections requested. Please include a response letter which indicates how the corrections were resolved. All codes cited refer to the 2015 International Building Code (IBC), 2015 International Existing Building Code (IEBC), the 2015 International Fire Code (IFC), the 2015 International Mechanical Code (IMC), and/or the 2015 Washington State Energy Code (WSEC), as amended by the State of Washington and adopted by the City of Everett. The current IBC referenced standard for accessible design is the 2009 "Accessible and Usable Buildings and Facilities" (ICC/ANSI A117.1). Federal ADA regulations and standards may be more restrictive. These comments address building issues only. Additional revisions or additions may be required by other departments (such as Utilities, Traffic, Planning or Fire). All required submittals must be of sufficient detail and information to ensure that the proposed structure will be constructed in compliance with all adopted codes. Sincerely, Tony Lee Bradley A. Martin, P.E., S.E. Building Official Associate Engineer CITY OF EVERETT • 3200 Cedar Street • Everett, WA 98201 • (425)257-8813 Page 5 /3