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QUANTUM <br />C O N S U L T I N G E N G I N E E R S <br />DATE: <br />2/6/2023 <br />TO: <br />Matt Rafdal <br />Homeowner <br />PROJECT MEMO <br />RE: Rafdal Residence <br />Renovation - Glu-lam Beam <br />Orientation <br />FROM: <br />John Riley, P.E., S.E. <br />Installing the GL beam upside down is acceptable structurally, as it is deflection <br />controlled so having the better -quality tension laminations now located on the top <br />compression side of the 24F-V4 grade simple span GL beam is acceptable structurally <br />from a design bending stress perspective. <br />Sincerely, <br />Quantum Consulting Engineers, LLC <br />John Riley, S.E., P.E. <br />Principal <br />1511 THIRD AVENUE <br />SUITE 323 <br />SEATTLE, WA 98101 <br />TEL 206.957.3900 <br />FAX 206.957.3901 <br />