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• • <br /> QUANTUM I CONSULTING ENGINEERS <br /> April 2, 2024 D E ©1IJ' f1 V <br /> Benjamin Monk APR 10 2024 <br /> City of Everett Public Works Department <br /> 3200 Cedar Street CITY OF EVERETT <br /> Everett, WA 98201 Permit Services <br /> Subject: B2402-031—Job Address 900 Grand Ave, Everett,WA 98201 <br /> Quantum Project#22105.02 <br /> Dear Benjamin Monk: <br /> We have received the correction notice on the above-referenced project dated 3/18/2024. Below are our <br /> responses to the structural comments and referenced supplemental structural calculations. <br /> STRUCTURAL <br /> 1. Please provide verification that the new gravity loading will not trigger a Tier II alteration to the <br /> existing structural elements carrying gravity loads and lateral loads per Section 503.3 and Section <br /> 503.4 of the 2018 IEBC. <br /> The existing retail area is designed for 100 psf Live Load. The attached calculation page 1 shows <br /> our total climbing wall Dead+Live Loads does not exceed 100 psf. The attached calculation page <br /> 1 shows that added dead load for the climbing wall is less than a 0.5%increase to the total dead <br /> load for the entire slab of the building therefore no Tier II analysis is required. <br /> 2. It appears that in Detail 6/CW3.1 a horizontal concentrated force will be applied to an existing <br /> W12x I-Beam normal to its web. Please consider the following matters of steel construction from <br /> the AISC Steel Construction Manual and any others applicable, but not mentioned below: <br /> a. Application of concentrated forces to webs of wide-flange sections per Section J10 and <br /> Section CJ10. <br /> AISC Section J10 only applies to concentrated forces applied perpendicular to the beam flange. <br /> For the horizontal load applied to the beam web,see attached calculation page 2 checking a flat <br /> plate bent in weak axis per section F11. <br /> b. Fillet weld limitations for web to flange connections as discussed in Section J2.2 and Table <br /> J2.4 and Figure 8-11. <br /> See attached calculation page 2 for weld check. <br /> QUANTUM CONSULTING ENGINEERS-1511 THIRD AVENUE SUITE 323-SEATTLE WASHINGTON 98101 I T 206.957.3900 <br /> www.quanturnce.corn <br /> 11 )z <br />