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� a <br /> QUANTUM I CONSULTING ENGINEERS <br /> PROJECT MEMO <br /> DATE: <br /> 6/13/2019 <br /> TO: FROM: <br /> Alvin Wong,Zezura Townhomes John Riley, P.E., S.E. <br /> Adam Clark,2812 Architecture <br /> RE: Zezura Townhomes <br /> Concrete Strength & Special Inspections <br /> We checked the concrete footings and slab-on-grade for a lower 2,500 PSI allowable <br /> concrete compressive strength, versus the 3,000 PSI compressive strength specified on <br /> the structural drawings. Our design checks indicate that the footings and slab are <br /> acceptable structurally as currently detailed on the drawings using the lower 2,500 PSI <br /> concrete compressive strength. No special inspection of the concrete placement is <br /> therefore required. <br /> Let me know if you have any questions or need any additional information. <br /> Thanks, <br /> John Riley, S.E., P.E. <br /> Principal <br /> ov NCI <br /> /4V <br /> / o ,, ' <br /> NAL <br /> 1511 THIRD AVENUE <br /> 0-0 SUITE 323 <br /> SEATTLE,WA 98101 <br /> TEL 206.957.3900 <br /> FAX 206.957.3901 <br /> www.quantumce.com <br />