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BRAUN <br /> INTERTEC <br /> Compressive Strength of Concrete Cylinder Report Date: 8/13/10 <br /> Test Method: ASTM C39,4x8 Cylinder LIMS WO#: 1006272 <br /> Client: Chad Rettke Project: BL-08-02099F <br /> Kraus-Anderson Construction Company Orono HS 2010 Phase 2 Additions <br /> PO Box 158 795 Old Crystal Bay Road N <br /> 8625 Rendova St NE,Midwest Division Orono,MN 55356 <br /> Circle Pines,MN 55014-0158 Client Project: 90270 <br /> Field Test Conditions and Results ASTM C31* <br /> Set Number: 1 Mix Design: 4000 <br /> Date Cast: 07/13/10 Supplier: Knife River <br /> Time Cast: 2:31 pm Specified Air(%): Not Required <br /> Date Received: 07/15/10 Specified Strength(psi): 3,000 <br /> Measured Slump(in.):(ASTM C143) 4 Truck Number: 1488 <br /> Measured Air(%): (ASTM C231) 1.9 Ticket Number: Not Given <br /> Concrete Temp.(°F): (ASTM C 1064) 78 Cylinders per Set: 5 <br /> Air Temp. (°F): 81 Cylinders Cast By: Scott,Andrew P <br /> Liquid Added On Site: None <br /> Placement Location: Building Interior,HS,Footing,Area C,duct shaft footing <br /> Sample Location/Notes: same <br /> Compression Test Results <br /> Field Lab Test Max. Cylinder Cylinder <br /> Break Cure Cure Age Load Diameter Area Strength Fracture Capping Remarks <br /> Sample No. Date (days) (days) (days) (pounds) (in.) (sq.in.) (psi) Type Method** Code(s) <br /> 1-1 7/20/10 2 5 7 45,540 4.01 12.63 3,610 1 N D2 <br /> 1-2 8/10/10 2 26 28 63,480 4.02 12.69 5,000 4 N E1 <br /> 1-3 8/10/10 2 26 28 63,530 4.02 12.69 5,010 4 N EI <br /> 14 8/10/10 2 26 28 61,220 4.02 12.69 4,820 4 N E1 <br /> * Concrete sampled in accordance with ASTM C172 <br /> **Capping Method:N=ASTM C1231, Unbonded Caps S=ASTM C617,5uffitr Caps <br /> Break Remarks: <br /> D2 The 7 day test result meets or exceeds the 28 day specified strength. <br /> El The average 28 day test result meets or exceeds the specified strength. <br /> Types of Fracture <br /> E 0 0 E 1111 4-MG�k <br /> TYPE 1 TYPE 2 TYPE 3 TYPE 4 TYPE 5 TYPE 6 Van Abel,Josh <br /> I approve the document Aug 13 2010 <br /> ver 1.3c Page 1 of 1 <br />