Park West CC(7)-LR 990202· STATISTICAL ANALh SIS OF CONCRETE
8901 Carpenter Frwy., Suite #100
Dallas, Texas 75247
Date of Service:
Client No.:
Client:
02/02/1999
71765000
Prentiss Properties Limited, Inc.
Attn: David Glass
3890 W. Northwest Hwy.
Dallas TX 75220
Report No.: 9835048A
Project No.: 43-2170-98
Project: Lakeview Center
Coppell, Texas
Report Date
02/02/1999
Services: Review concrete compressive strengths for compliance with project specifications and ACI 318 Building
Code.
SPECIFICATION REQUIREMENTS:
CONCRETE CLASS: 9351
PROJECT DATA
4000 psi ~ 28 Days
REPORT OF TESTS
NUMBER AIR CONCRETE COMPRESSIVE RUNNING
REPORT OF SLUMP CONTENT TEMP STRENGTH 3 TEST AVG
DATE NUMBER SET SAMPLES (in.) (%) (F) PSI PS!
11/11/1998 9830655 1 2 7.50 N/A 48 4090
11/11/1998 9830655 2 2 6.25 N/A 52 4670
12/17/1998 9833941 1 2 5.75 N/A 70 4100 4287
12/17/1998 9833941 2 2 5.50 N/A 66 4410 4393
12/17/1998 9833941 3 2 5.00 N/A 67 4810 4440
12/17/1998 9833941 4 2 5.50 N/A 72 4785 4668
12/30/1998 9835048 1 2 5.00 4.6 65 4402
12/30/1998 9835048 2 2 5.25 4.9 66 4575 4323
12/30/1998 9835048 3 2 5.00 4.7 69 4535 4240
Average of all sets of three consecutive strenghts equals or exceeds the project specifications.
Average of 9 sets = 4400 PSI ~ 28 days
Standard Deviation = 395 PSI
Corrected Standard Deviation = N/A (less than 15 samples)
Required Average Strength per ACI 318 (89) 5.3.2.2 = 5200 PSI
Technician: Eugene Harbour
Report Distribution:
(I) Prentiss Properties Limited, Inc.
(l) Alliance Architects, inc.
(1) Halff Associates
(1) Mullen & Powell Technistruetures, l
(I) Butler Construction
(1) City of Coppell
(1) City of Coppell
Il
This report is exclusively for the use of'the client indicated above and shall not be ~eproduced except in full without the written approval of HBC Engineering, inc.
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