The URL can be used to link to this page

Northlake 635(7)-LR 980611 ENGLNE~, INC. 8901 Carpenter Frwy., Suite #100 Dallas, Texas 75247 Date of Service: 05/28/1998 Report No.: 9810442A Report Date 06/11/1998 Client No.: 71765000 Project No.: 43-2479-97 Client: Prentiss Properties Limited, Inc. Project: Calling Center GOPY Attn: David Glass Coppell, Texas 3890 W. N.W. H~wd, Suite 400 Dallas TX 75220 Services: Review concrete compressive strengths for compliance with project specifications and ACI 318 Building Code. PROJECT DATA SPECIFICATION REQUIREMENTS: 4000 psi @ 28 Days CONCRETE CLASS: 9351 REPORT OF TESTS NUMBER AIR CONCRETE COMPRESSIVE RUNNING REPORT OF SLL'MP CONTENT TEMP STRENGTH 3 TEST AVG DATE NUMBER SET SAMPLES (in.) {,%) (F) PSI PS! 02/14/1998 9805068 1 2 5.75 5.0 64 5500 02/14/1998 9805068 2 2 6.75* N/A 65 5080 02/14/1998 9805068 3 2 6,25 N/A 65 4710 5097 02/14/1998 9805068 4 2 8.00* N/A 66 4220 4670 02/24/1998 9805790 1 2 6.00 4.0 61 4040 4323 02/24/1998 9805790 2 2 5.75 3.2 60 4250 4170 02/24/1998 9805790 3 2 5.75 4.2 61 4365 4218 02/24/1998 9805790 4 2 5.50 3.2 69 4470 4362 02/24/1998 9805790 5 2 5.50 3.0 70 4770 4535 02/28/1998 9806169 1 2 5.75 4.6 65 4705 4648 02/28/1998 9806169 2 2 6.00 4.8 70 4800 4758 02/28/1998 9806169 3 2 5.50 4.6 67 4655 4720 02/28/1998 9806169 4 2 5.50 4.9 66 4010 4488 02/28/1998 9806169 5 2 6.25 4.6 67 3325* 3997** 02/28/1998 9806169 6 2 5.50 4.7 68 4070 3802** 02/28/1998 9806169 7 2 5.75 4.7 70 3950 3782** 03/06/1998 9806633 1 2 5.00 4.50 58 5415 4478 This report is exclusively for the use of the client indicated above and shall not be reproduced except in full without the written approval of! IBC Engineering, Inc. 11 Page I of 3 Report No.: 9810442A ~1 II ~ NUMBER AIR CONCRETE COMPRESSIVE RUNNING REPORT OF SLUMP CONTENT TEMP STRENGTH 3 TEST AVG DATE NUMBER SET SAMPLES (in.) (%) (F) PSI PSi 03/06/1998 9806633 2 2 5.00 N/A 65 5950 5105 03/06/1998 9806633 3 2 5.00 N/A 60 5250 5538 03/06/1998 9806633 4 2 5.25 N/A 62 4650 5283 03/06/1998 9806633 5 2 5.00 N/A 60 4980 4960 03/18/1998 9807550 I 2 3.50 N/A 76 5060 4897 03/25/1998 9808096 1 2 5.00 4.0 79 4075 4705 03/25/1998 9808096 2 2 5.00 3.0 80 4005 4380 03/25/1998 9808096 3 2 5.25 3.2 80 4295 4125 03/25/1998 9808096 4 2 5.50 4.2 80 4270 4190 04/16/1998 9809878 1 2 6.00 N/A 74 3810 4125 04/16/1998 9809878 2 2 6.50 N/A 74 4015 4032 04/16/1998 9809878 3 2 7.00 N/A 76 3915 3913'* 04/23./1998 9810442 1 2 6.50 N/A 64 4005 3978** 04/23/1998 9810442 2 2 6.50 N/A 64 3860 3927** 04/23/1998 9810442 3 2 6.50 N/A 67 3795 3887** 04/23/1998 9810442 4 2 5.50 N/A 72 3920 3858** 04/23/1998 9810442 5 2 5.00 N/A 76 4295 4003 04/23/1998 9810442 6 2 4.75 N/A 78 4085 4100 05/07/1998 9811769 1 2 5.00 4.3 65 4505 4295 05/'07/1998 9811769 2 2 5.25 4.7 66 4305 4298 05./07./1998 9811769 3 2 5.00 4.9 66 4090 4300 05/07/1998 9811769 4 2 5.00 4.8 68 3635 4010 05/07/1998 9811769 5 2 5.00 4.2 77 3695 3807** 05/12/1998 9812156 I 2 5.50 3.4 80 4645 3992** 05/12/1998 9812156 2 2 5.00 4.2 80 4990 4443 05/12/1998 9812156 3 2 5.25 3.4 84 4295 4643 05/12/1998 9812156 4 2 5.50 4.0 80 3835 4373 05/12/1998 9812156 5 2 5.75 3.4 84 5040 4390 05/12/1998 9812156 6 2 5.00 4.2 90 4500 4458 05/20/1998 9812956 1 2 5.75 N/A 80 4290 4610 05/20/1998 9812956 2 2 5.50 N/A 83 4155 4315 05/20/1998 9812956 3 2 5.50 N/A 90 4220 4222 05/20/1998 9812956 4 2 5.75 N/A 88 4560 4312 06/04/1998 9814388 1 2 5.50 4.9 93 4455 4412 An asterisk (*) appears next to test results which fall below 500 PSI of the project specifications. Two asterisks (**) appear next to the averages which do NOT meet the project specifications. Average of all sets of three consecutive strenghts does NOT equal or exceed the project specifications. This report is exclusively for the use of the client indicated abo~e and shall not be reproduced except in full without the written approval of HBC Engineering. Inc. I 1 Page 2 of 3 Report ~No.: 9810442A COMPRESSIVE Average of 51 sets = 4390 PSI ~ 28 days Standard Deviation = 523 PSI Standard Deviation is not corrected because there are 30 or more samples. 4000 + 1.34 * 523 = 4701 PSI 4000 + 2.33 * 523 = 4719 PSI Required Average Strength per ACI 318 (89) 5.3.2.1 = 4719 PSI ACI Criteria is NOT satisfied. Technician: Eugene Harbour ~ Engineering, Inc. Report Distribution: ( l ) Premiss Properties Limited, Inc. ( l ) I lalffAssociates, Inc. (1) Butler Construction (1) City of Coppeli ( 1 ) Alliance Architects, Inc. (1) Evcrt:Butler Const. {l) Brockette Davis Drake, Inc. (I) HBC Engineering; Mr. Eugene l larbour This report is exclusively for the use of the client indicated abox e and shall not be rep:'oduced except in :'ull without the v, Titten approval of HBC Engineering, Inc. Page 3 of 3