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CONCRETE COMPRESSIVE STRENGTH TEST REPORT <br />Report Number: M7221540.0002 <br />Service Date: 08/05/22 <br />Report Date: 09/06/22 Revision 1 - 28-day results <br />Task: <br />Client <br />Corti Construction, Inc <br />Attn: Ted Spicer <br />4024 148th Ave NE <br />Redmond, WA 98052 <br />Material Information <br />Specified Strength: 5,000 <br />psi @ 28 <br />days <br />Mix ID: 024000P <br />Supplier: Smokey Point <br />Concrete <br />Batch Time: 1228 <br />Plant: <br />603R <br />Truck No.: 479 <br />Ticket No.: <br />280744 <br />Field Test Data <br />Test <br />Result <br />Specification <br />Slump (in): <br />6 <br />Air Content (%): <br />5.1 <br />Concrete Temp. (F): <br />78 <br />Ambient Temp. (F): <br />66 <br />Plastic Unit Wt. (pcf): <br />Yield (Cu. Yds.): <br />Laboratory Test Data <br />MAYES I Irerracon <br />20225 Cedar Valley Rd Ste 110 <br />Lynnwood, WA 98036-6365 <br />425-742-9360 <br />Project - M7221540 <br />Bezos Academy Everett <br />3201 Smith Ave <br />Everett, WA 98201 <br />Permit No.: B2205-053 <br />Sample Information <br />Sample Date: <br />Sampled By: <br />Weather Conditions: <br />Accumulative Yards: <br />Placement Method: <br />Water Added Before (gal): <br />Water Added After (gal): <br />Sample Location: <br />Placement Location: <br />08/05/22 Sample Time: 1321 <br />Barry Tuttle <br />Clear <br />10 Batch Size (cy): 10 <br />Pump <br />10 <br />0 <br />Grd line 3.8/B <br />Infills, grid lines 3.8-7 from B-F <br />Age at Max <br />Comp <br />Set <br />Spec Cyl. <br />Avg Diam. <br />Area <br />Date <br />Date <br />Test Load <br />Strength <br />Frac Tested <br />No. <br />ID Cond. <br />(in) <br />(sq in) <br />Received <br />Tested <br />(days) (Ibs) <br />(psi) <br />Type By <br />1 <br />1 Good <br />4.00 <br />12.57 <br />08/08/22 <br />08/12/22 <br />7 58,520 <br />41660 <br />2 AWD <br />1 <br />2 Good <br />3.99 <br />12.5 <br />08/08/22 <br />09/02/22 <br />28 80,610 <br />61450 <br />2 AWD <br />1 <br />3 Good <br />3.99 <br />12.5 <br />08/08/22 <br />09/02/22 <br />28 81,660 <br />61530 <br />2 AWD <br />1 <br />4 Good <br />4.00 <br />12.57 <br />08/08/22 <br />09/02/22 <br />28 81,060 <br />61450 <br />2 AWD <br />Average (28 days) <br />6,480 <br />Initial Cure: Inside <br />Final <br />Cure: Moist <br />Room <br />Sample Description: <br />4-inch diameter cylinders <br />Comments: Average compressive strength of 28 day <br />cylinders complies with <br />the specified strength. <br />Not tested <br />for plastic unit <br />weight. <br />Samples Made By: Mayes/Terracon <br />Services: Special Inspections / Materials Testing <br />Mayes/Terracon Rep.: Barry Tuttle <br />Reported To: Corti <br />Contractor: Corti <br />Report Distribution: -- <br />(1) Corti Construction, Inc, Ted Spicer (1) City of Everett WA, Permit Services Reviewed By: <br />(1) Mayes Testing Engineers, Inc, Donna (1) Mayes Testing Engineers, Inc, Todd Wirtz Barry Tuttle <br />Pollard <br />Project Field Manager <br />(1) Smokey Point Concrete Inc, Jasper Smith <br />Test Methods: ASTM C 31, ASTM C39, ASTM C138, ASTM C143, ASTM C172, ASTM C231, ASTM C1064, ASTM C1231 <br />The tests were performed in general accordance with applicable ASTM, AASHTO, or DOT test methods. This report is exclusively for the use of the client indicated above and shall not be <br />reproduced except in full without the written consent of our company. Test results transmitted herein are only applicable to the actual samples tested at the location(s) referenced and <br />are not necessarily indicative of the properties of other apparently similar or identical materials. <br />CRoo01, 3-31-22, Rev.7 Page 1 of 1 <br />