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WA9302-LR 960213[EOTECHNICAL E GEE Consultants, Inc. E NVIRONMENTAL 10046 Monroe Drive · Dallas, Texas 75229 · (214) 352-5433 · Fax (214) 352-6972 REPORT OF CONCRETE MIX INSPECTION Report Date: February 13, 1996 Date Concrete Placed: January 12, 1996 Standard 6"x12" Client: City of Coppell Area 28.27 Sqtlare Inches Project: 6.0 Million Gallon Water Storage Tank Concrete Report No.: 12 1 Contractor: Natgun Corporation Project No.: 95-0196 Concrete Supplier and Plant: RediMix Concrete - Plant #1 Location of Placement: Wall Panel MATERIALS Source/ ~a~h W~. INSPECTION DATA Description (Lbs ./Cu. Yd) Mix Number: 685 Time Sample Batched: 9:30 am Cement: Time Sampled: 10:15 am Fly Ash: Sample Location: WE-4 Truck/Ticket No: 125/17933 Coarse Aggregate: Temperature: Intermediate Aggregate: Ambient Range: 54°F Fine Aggregate: Concrete Range: 59°F Admixtures: Slump Range (inches): 81/~'' Weather Conditions: Partly Cloudy 1 Time Started: 9:15 am 2 Time Completed: 5:30 pm Added Water: Sample Air Content (%): 8% Total Cubic Yards Placed: 10 C.Y. Required Strength (Lbs./sq.in.): 5,000 psi Specimen Measured Age Date Total Load Compressire Strength Remarks Nmnber Slump (in.) (Days) Tested (Lbs.) (Lbs./Sq.ln.) CWT 423 8V2" 7 01/19/96 146,280 5,170 Slump before super plasticizer was CWT 424 8V2" 28 02/09/96 169,800 6,010 21/2'' CWT 425 81/2" 28 02/09/96 173,220 6,130 est Methods Utilized Fracture Regular STM C-31,C-39,C-143 (Unless Noted Otherwise) Cylinders Made By: P.C./W.I. Remarks and/or Distribution: cc: Mr. Larry Davis - City of Coppell Mr. Bob Barbarisi, Jr. - Natgun Corporation Mr. Gary Hendricks - Shimek, Jacobs and Finklea C, glg Cammlm~, hr.. Reviewed by: ( C~~ D