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Valley R Plaza A-CS 970326MAR -27 -1997 07:16 r� March 26, 1997 TEXAS INDUSTRIES, INC. TEXAS INDUSTRIES 1341 W MOCKINGBIRD LAND • DALLAS, TEXAS 76247 • 97PI542'6700 Stovall Construction P.Q. Box 1185 Kennedale, TX 76060 Attn: Project Superintendent RE: McDonald's - City of Coppell 8274 P.01 The attached concrete mix design utilizing the appropriate ASTM C -33 or ASTM C -330 aggregate is proposed for use on the above referenced project for ready -mixed concrete to be furnished by TXI. To ensure that the correct mix is delivered to your project, please order by the mix design number which appears in the upper left hand corner of the mix design. Texas Industries certifies that the above mix design, when ordered by specified design identity, and delivered by TXI, will meet or exceed the indicated design strength at the designated age when tested in accordance with the applicable and current ASTM Standards C 31, C 39, C 78, C 172, C 293, applicable provisions of C 94, and evaluated in accordance with applicable provisions of the ACI 318 Building Code. TXI would like to be included on your mailing list to receive all test reports. ASTM C 94 entitles a manufacturer to receive copies of all test reports when strength of concrete is used as a basis for acceptance. Contact us if you have any questions or require any additional information. Please notify TXI of approval of the proposed mix design prior to its use. Failure to notify us prier to first placement shall constitute acceptance. To ensure that the proper mix design is ordered, please send a copy of this letter, after approval, to the above referenced project to be used by the person ordering the concrete for this job. Sincerely, Texas Industries &ZZL &44 Bruce Bach Customer Service Representative MAR -27 -1997 07:17 TEXAS INDUSTRIES, INC. Mix #: 8274 Description: 6.00SK ADMIX /AEA 1 "CS Strength: 4000 psi m 28 Days HAND PLACED PAVING Maximum Coarse Aggregate: Maximum Water /Cement Ratio: Cement /Cementitious Content: Maximum placement Slump: Air Entraining Agent: Admixture: 1" - #4 CRUSHED STONE 5.17 gal /sack or 0.457 lbs /lb 6.00 sacks (per cubic yard) 4.00 inches ASTM C -260 ASTM C -494 Type A or D MATERIAL QUANTITIES PER 1.0 CUBIC YARD AT S.S.D 564 lbs. ASTM C 150 TYPE I CEMENT 1840 lbs. 1" - #4 CRUSHED STONE 1273 lbs. CONCRETE SAND 258 lbs. or 31.0 Gallons of Water 2.0 to 4.0 oz /cwt of ASTM C -494 Type A Specified Air Content: 3.0k - 6.0t Placement Slump: 3.00 + or - 1.00 inches P.02 MAR -27 -1997 07:17 TEXAS INDUSTRIES, INC. P.03 PUMPING RECOMMENDATIONS 1. 5" minimum diameter lines with no reduction to smaller lines. 2. Keep rubber hose to absolute minimum length and plan pipe with as few 90 degree angles as possible. 3. Samples for slump and strength tests should be taken 0 discharge and of hose for strength guarantee to be valid. 4. To prime pump lines, a minimum of 8.0 sack grout should be used for lubrication. In the case of strength concrete, equivalent strength grout should be used if the grout remains in the placement. 5. Pump mixes are based on minimum cement content pumped at ground level. As Vump line increases in length or height and /or layout configuration changes, additional cement may be required to assure strength and pumpability at additional cost to the contractor. 6. TXI cannot control, and is therefore not responsible for excessive loss of entrained air content when loss occurs as a result of boom configuration or free fall discharge from hose. To ensure minimum air loss when pumping, maintain a continuous flow of concrete through the entire length of pipe and do not subject concrete to free fall. we are enclosing all available back up data for the referenced mix design(s). if the strength information is not available, or is insufficient, confirmation tests may have to be conducted by your laboratory. MAR -27 -1997 07:17 TEXAS INDUSTRIES, INC. P.04 Ttus IMMTIUZB calwraisra IDWIGH Jr4AL &TZOx Data. 03/26/97 •+ statistica cowiled irw Iadepeadaat I.aboratery Teat Speclsena +• Mx NUabarl 8274 Strength: 4000 psi a 2e Day, 28 Day Test Data Temperature Test Plant (Fahrenheit) placement Percent Dumber Date Number Ambient Concrete Slump(in) of Air --------- 28 Day Y - -• - - - -- CZemvlativc NOving -- -- - --- -- --------- --- - --- PSI 1 PSI 2 PSI Avg Average Avg of 3 Mange 1 10/02/96 89 7.00 4.0% 5490 5450 5470 5470 2 10/03/96 85 3.25 4.7t 4410 4410 3 10/03/96 s0 5.50 N/A 5200 5180 5240 4940 4 10/04/96 5040 5040 s0 5 10/04/96 80 4.00 3.8% 4990 4770 4880 5000 4843 220 82 S.So 5.Lt 4290 4470 4380 4976 4833 180 6 10/08/96 81 5.50 N/A 4630 4760 4695 4846 7 10/10/96 84 4.00 5.4t 4450 4470 4460 4652 130 8 10111196 83 4791 4512 20 9 10/14/96 4.00 4.Ot 4680 465o 4665 4775 4607 30 43 82 5.00 4.51 4650 4600 4625 4758 1583 50 10 10/15/96 43 94 5.00 4.Ot 4140 4150 414S 4697 4478 11 10116196 82 4.50 3.9t 4220 4210 4215 4653 10 12 10/16/96 43 B8 4.75 4.Ot 4260 4170 4215 4617 4328 10 13 10/16/96 43 85 4192 90 5.25 4.2t 4000 4040 4020 4571 4150 40 14 10/17/96 44 76 64 7.00 N/A 4650 4530 4590 4572 4275 120 15 10/18/96 43 63 4.50 3.9t 4760 4100 4730 4583 4447 60 16 10/19/96 43 92 6.00 3.81 4390 4130 4260 4563 4527 260 17 10/24/96 43 69 5.75 7.Ot 4180 4320 4250 4544 4413 140 le 10/25/96 71 4-So 6.04r 4960 4e10 4685 4563 4465 150 19 10/25/96 46 69 74 5.50 N/A 4390 4280 4335 4551 4490 110 70 10/31/96 92 3.00 4.6t 5080 S230 5155 4581 4792 250 21 11104/96 43 70 4.75 5.71 4530 4550 4540 4579 4677 20 22 11/04/96 43 70 5.00 5.9% 4710 4230 4270 4563 4638 20 23 11/05196 79 4.75 6.2t 4820 4860 4840 4575 4533 40 24 11/05/96 40 78 79 5.00 N/A 4510 4750 4630 4577 4563 240 25 11/06/96 83 5.50 4.Ot 4630 4630 4630 4579 4700 0 16 11/14/96 79 3.50 4.et 4310 4130 4220 4566 4493 Igo 27 11118196 74 3.00 4.7t 5440 5280 5360 4595 4737 160 26 11/20/96 40 79 5.50 4.51 4100 4090 4095 4577 4558 10 29 11/20/96 40 79 5.00 4.34 4260 4310 4235 4565 4563 50 30 11/23/96 41 54 67 5.00 N/A 4310 4520 4665 4569 4332 290 •66 Averages • 69 80 4.72 4.7t MAR -27 -1997 07:18 TEXAS INDUSTRIES. INC. P.05 COMMENTARY OF STATISTICAL VALUATION OF CONCRETE DE9I(#N RESULTS Mix NUM: 8274 Strength: 4000 psi 0 20 Days Paragraph 5.5 of ACI 318 -89 provides that as data becomes available during construction, the amount by which (F'cr) must exceed the specified value of (F'c) may be reduced, provided: (a) 30 or more test results are available and average of test results exceeds that required by Section 5.3.2.1, using a standard deviation calculated in accordance with Section 5.3.1.1, or (b) 15 to 29 test results are available and average of test results exceeds that required by Section 5.3.2.1, using a standard deviation calculated in accordance with Section 5.3.1.2. The required average compressive strenVth has been calculated using a standard deviation calculated in accordance with ACI 318 -89 Section 5.3.1.1 or Section 5.3.1.2 and is the larger value of these calculation$: F' cr = F' c 4000 = 4511 F' cr = F' c 4000 = 4388 + 1.34(SD) + 1.34( 381.0) + 2.33(SD) - 500 + 2-33( 381.0) - 500 SUMMARY OF STATISTICAL ANALYSIS 28 Day Test Data Number of Tests ...........•...•... 30 _ Maximum Value ...................... ... Minimum Value 5470 p ...................... 4020 p • Averrage.Strength 1450 psi .....................• .. - •• Standard Deviation 4569 psi Required Average Strength to satisfy 381 psi minimum probability conditions of ACI 318 --89 Section 5.3.2.1........ .. . 4511 psi Design excess beyond code requirements... 58 psi TOTAL P.05