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BRAUN <br /> INTERTEC <br /> Compressive Strength of Concrete Cylinder Report Date: 9/8/10 <br /> Test Method: ASTM C39,4x8 Cylinder <br /> LIMS WO#: 1006314 <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 10 Client Project: 90270 <br /> Field Test Conditions and Results ASTM C31* <br /> Set Number: 2 Mix Design: 3140S2172 <br /> Date Cast: 07/14/10 Supplier: Knife River <br /> Time Cast: 9:10 am Specified Air(%): Not Required <br /> Date Received: 07/15/10 Specified Strength(psi): 4,000 <br /> Measured Slump(in.):(ASTM C143) 41/2 Truck Number: 1463 <br /> Measured Air(%): (ASTM C231) 2.2 Ticket Number: 1541554 <br /> Concrete Temp.(°F): (ASTM C 1064) 78 Cylinders per Set: 5 <br /> Air Temp. (°F): 83 Cylinders Cast By: Gross,Jason L <br /> Liquid Added On Site: None <br /> Placement Location: Building Interior,Slab on Grade,Art Room Plumbing Infill <br /> Sample Location/Notes: 10'S and 10'W of NE Comer of Infill <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 /> 2-01 7/21/10 1 6 7 32,450 4.01 12.63 2,570 3 N B2 <br /> 2-02 8/11/10 1 27 28 48,410 4.01 12.63 3,830 5 N F1 <br /> 2-03 8/11/10 1 27 28 49,940 4.01 12.63 3,950 5 N F1 <br /> 2-04 8/11/10 1 27 28 50,160 4.01 12.63 3,970 5 N F1 <br /> 2-05 9/8/10 1 55 56 59,580 4.01 12.63 4,720 3 S D4 <br /> * Concrete sampled in accordance with ASTM C172 <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 /> D4 The 56 day test result meets or exceeds the 28 day specified strength. <br /> F1 The samples fail to meet the strength level requirements as stated in ACI 318,Chapter 5. <br /> Types of Fracture <br /> TYPE 1 TYPE 2 TYPE 3 TYPE 4 TYPE 5 TYPE 6 Van Abel,Josh <br /> I approve the document Sep 08 2010 <br /> ver 1.3c Page 1 of 1 <br />