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DR9401-SP 950622 JUN-22-1995 15:09 EXPRESS CONCRETE 8172348060 EXPRESS CONCRETE 1101 JARVIS SAGINAW, TX 76131 U.S.A. (817) 234-8050 CONCRETE MIX DESIGN 9339 [ ] 3000 PSI 06/22/95 CONTRACTOR : HUMPHREY-MORTON CONSTRUCTION CO. PROJECT : COPPELL-SHADY RIDGE/DEVONSHIRE DRAINAGE SOURCE OF CONCRETE : EXPRESS CONCRETE CONSTRUCTION TYPE : AS REQUIRED ~LACEMENT : HAND,PUMP,MACHINE WEIGHTS PER CUBIC YARD (SATURATED, SURFACE-DRY) YIELD, CU FT ASTM C-150,NO.TEXAS TYPE X CEMENT, LB 470 2.39 ASTM C-33,BRAZOS POINT CONCRETE SAND, LB 1383 8.37 ASTM C-33,CHICO I"-#4 CR. STONE, LB 1840 11.13 WATER, LB (GAL-US) 235 ( 28.2) 3.77 AIR ENTRAINMENT, % 5.0 +/- 1.5 1.35 TOTAL 27.00 ASTM C-494,W.R.GRACE TYPE "A" OR "D", OZ 18.8 ASTM C-260 W.R.GRACE DAVAIR, OZ-US 2.4 WATER/CEMENT RATIO, LBS/LB 0.50 SLUMP. IN 4.00 CONCRETE UNIT WEIGHT, PCP 145.5 3000 PSi/5.0 SK.ADMIX/AEA PLEASE ORDER BY MIX NUMBER 9339 PLEASE SEND T~ST RESULTS TO EXPRESS CONCRETE C/O JIM ELLIS JIM E~S,Q.C.MGR. JUN-22-1995 15:09 EXPRESS CONCRETE 8172348060 P.03 Page 1 Tabular Results of 9339 ACI 214 SUMMARY Statistical Strength Summary Average strength based on 30 tests : 4241 psi Overall Standard Deviation : 552 Control is Good Overall coefficient o£ variation : 13.01% Overall within-test coefficient of variation : 2.84 % Control is Excellent Chance of strength falling below 3000 psi : 1.2 % Chance of strength falling below 2500 psi : - % Chance of "Average of 3" below 3090 psi : - % ACi 214 Minimum Recommended Strength : 3786 psi Chance of strength less than speclfied - 500 <= i in 100 Chance of "Average of 3" less than specified <= i in 100