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QUANTUM I CONSULTING ENGINEERS <br /> STRUCTURAL REVISIONS MEMO <br /> DATE: <br /> 4/4/2024 <br /> TO: FROM: <br /> Cal Bearman, P.E. Matthew Wion P.E., S.E. <br /> Everett Plans Examiner Associate <br /> RE: <br /> Waterline Mezzanine Revisions <br /> Quantum Project 23208.01 <br /> The mezzanine at Waterline apartments has been revised to a smaller area.The cantilever East of Grid B <br /> has been removed and the stair has been rotated to be supported by a short, cantilevered landing. <br /> Additionally, the column at the North East corner of the mezzanine has been removed. Many of the <br /> member sizes have remained the same due to steel already being ordered, but the calculations have <br /> been revised and attached on the following pages. Due to the mezzanine decreasing in size, all existing <br /> structural members (columns, walls and slabs) are okay by inspection, as the previous calculations are <br /> now conservative. Similarly,the lateral design of the mezzanine (laterally supported by the existing <br /> concrete wall and new light gage shear walls) is okay by inspection. <br /> Please let us know if there are any additional questions. <br /> Matthew Wion P.E., S.E. <br /> Associate <br /> Quantum Consulting Engineers, LLC <br /> QUANTUM CONSULTING ENGINEERS-1511 THIRD AVENUE SUITE 323-SEATTLE WASHINGTON 98101 I T 206.957.3900 <br /> www.quantumce.com <br /> 2)2 <br />