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20 pARKWAY BL
COppE, TX 73019
FAX NO. (972) 304 -3M
ENGINEERING DEPARTMENT
FAX COVER SHEET
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1341 West Mockingbird Lane •Dallas, Texas 75247 • 972.647.6700 • www.txi.com
June 4, 1998
Rebcon, Inc.
1868 W. Northwest Highway
Dallas, TX 75220
Attn: Mr. Robert Bibby r
RE: Denton Tap Road
City of Coppell
8272 8274
The attached concrete mix designs utilizing the appropriate ASTM
C -33 or ASTM C -330 aggregate are 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 designs, 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 ACI 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.
Please contact us if you have any questions or require any
additional information. Please notify TXI of approval of the
proposed mix designs prior to their use. Failure to notify us
prior to first placement shall constitute acceptance. To ensure
that the proper mix designs are 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
&
Michael A. Caldarone, P.E.
Manager - Q.A. / Q.C.
Mix #: 8272
Description: 5.00SK ADMIX /AEA 1 11 CS
Strength: 3000 psi Q 28 Days
AS REQUIRED
Maximum Coarse Aggregate: 1" -
Maximum Water /Cement Ratio: 6.20
Cement /Cementitious Content: 5.00
Maximum Placement Slump: 4.00
Air Entraining Agent: ASTM
Admixture: ASTM
#4 CRUSHED STONE
gal /sack or 0.549 lbs /lb
sacks (per cubic yard)
inches
C -260
C -494 Type A or D
MATERIAL QUANTITIES PER 1.0 CUBIC YARD AT S.S.D
470 lbs. ASTM C 150 TYPE I CEMENT
1840 lbs. 1 - #4 CRUSHED STONE
1352 lbs. CONCRETE SAND
258 lbs. or 31.0 Gallons of Water
2.0 to 4.0 oz /cwt of -
Specified Air Content- 3.0% - 6.0%
Placement Slump: or - 1.00 inches
Mix #: 8274
Description: 6.00SK ADMIX /AEA 1 11 CS
Strength: 4000 psi Q 28 Days
AS REQUIRED
Maximum Coarse Aggregate: 1" -
Maximum Water /Cement Ratio: 5.17
Cement /Cementitious Content: 6.00
Maximum Placement Slump: 4.00
Air Entraining Agent: ASTM
Admixture: ASTM
#4 CRUSHED STONE
gal /sack or 0.457 lbs /lb
sacks (per cubic yard)
inches
C -260
C -494 Type A or D
MATERIAL QUANTITIES PER 1.0 CUBIC YARD AT S.S.D
564 lbs. ASTM C 150 TYPE
1840 lbs. 1 - #4 CRUSHED
1273 lbs. CONCRETE SAND
258 lbs. or 31.0 Gallons
2.0 to 4.0 oz /cwt
Specified Air Conte 3.0
Placement Slump: 3.
I CEMENT
STONE
of Water
TM C -494
- 1.00 inches