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Northlake 635(7)-LR00062310575 gewkirk Street s u it e 7 8 0 Clark Contractors Report Date: June 23, 2000 Dell=s, Texes 75220 1333 Crestside Drive Report ID. No: C6846 - 2990 9 7 2. 8 3 ! . I I I I Coppell TX 75019- F A X 9 72.8 31. O 80 0 Attention: Gary Zinberg REPORT OF COMPRESSIVE STRENGTH TESTS Project: PSINET 1333 Crestside Drive/Coppell, Texas Location: RAMP @ WEST END OF BLDG. Cast Date: 6/20/00 Batch Time: 7:39 Test Time: 8:20 Specimens Made By: EM Supplier: BUTLER Ticket No.: 009~25 Truck Number: 227 Concrete Mix: 6 SK Specified Strength: 4000 psi ~} 28 days PHYSICAL PROPERTIES OF CONCRETE (ASTM C143. C231. C138. C1064) Slump: 4 in. Air Content: 4.5 % Density: pcf. Temp.: 73 OF COMPRESSIVE STRENGTHS (ASTM C39) Compressive Percent Specimen Age Dia. Area Load Strength of Type of (No.) (Days} (in.) (in.2) (lbs.) (~)si} f'__c Fracture I 3 6.00 28.27 102,730 3630 Cone Average: 3630 91 Patton/J~rke*& Thomp~)~n, LLC cc: Concrete Supplier by: ~,r~S H~a.mm~er~_ PLRConstruction PATTON, BURKE & THOMPSON, LLC Engineering Consultants