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BRAUN <br /> INTERTEC <br /> Compressive Strength of Concrete Cylinder Report Date: 8/20/10 <br /> Test Method: ASTM G39,4x8 Cylinder <br /> LIMS WO#: 1006852 <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: 3 Mix Design: 4000 <br /> Date Cast: 07/20/10 Supplier: Knife River <br /> Time Cast: 10:00 am Specified Air(%): Not Given <br /> Date Received: 07/21/10 Specified Strength(psi): 4,000 <br /> Measured Slump(in.):(ASTM C143) Not Given Truck Number: Not Given <br /> Measured Air(%): (ASTM C231) Not Given Ticket Number: Not Given <br /> Concrete Temp.(°F):(ASTM C 1064) 65 Cylinders per Set: 5 <br /> Air Temp. (°F): 75 Cylinders Cast By: Contractor <br /> Liquid Added On Site: Not Given <br /> Placement Location: Building Interior,Slab on Grade,Area C,Lower Level <br /> Sample Location/Notes: Area C Lower Level <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 /> 3-1 7/27/10 1 6 7 34,680 4.00 12.57 2,760 5 N B2 <br /> 3-2 8/17/10 1 27 28 53,270 4.01 12.63 4,220 4 N E1 <br /> 3-3 8/17/10 1 27 28 52,750 4.01 12.63 4,180 4 N El <br /> 34 8/17/10 1 27 28 50,850 4.01 12.63 4,030 4 N E1 <br /> * Concrete sampled in accordance with ASTM C 172 <br /> **Capping Method:N=ASTM C1231, Unbonded Caps S=ASTM C617,Suter Caps <br /> Break Remarks: <br /> B2 The 7 day test result projects that the specified strength will likely be met at 28 days according to a typical <br /> age-strength relationship. <br /> E1 The average 28 day test result meets or exceeds the specified strength. <br /> Types of Fracture <br /> E 0 9 E [I [1 �� <br /> TYPE 1 TYPE 2 TYPE 3 TYPE 4 TYPE 5 TYPE 6 Van Abel,Josh <br /> I approve the document Aug 20 2010 <br /> ver 1.3c Page 1 of 1 <br />