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Duke Lesley 2A-LR071023 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Cloudy, calm Time Sampled: 03:30am Batch time: 02:53am Temperature - Air: 780F Concrete: 900F Truck No: 140 Ticket No: 13742 Air Content: NA Unit Weight (pet): NA Overall Placement Location: A, B, C I Lines 11-21 Measured Slump (inches) 5.0 Sample Location: A, B, C, Lines 11-12 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 1 1 09/28/2007 7 6.00 28.27 111 , 180 3,930 Cone/Split 2 10/19/2007 28 6.00 28.27 133,990 4,740 Cone/Split 3 10/19/2007 28 6.00 28.27 132,770 4,700 Cone/Split Average 4,720 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 1 of 11 Rone En~~ Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test MethOd: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Cloudy, calm Time Sampled: 04:38am Batch time: Temperature - Air: 780F Concrete: 920F Truck No: 136 Ticket No: 7548 Air Content: NA Unit Weight (pcf): NA Overall Placement Location: A, B, C / Lines 11-21 Measured Slump (inches) 4.0 Sample Location: A, B, C, Lines 12-13 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 2 1 09/28/2007 7 6.00 28.27 111,400 3,940 Cone/Split 2 2 10/19/2007 28 6.00 28.27 138,420 4,900 Cone/Split 2 3 10/19/2007 28 6.00 28.27 136,000 4,810 Cone/Split Average 4,850 2 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 2 of 11 Rone Eni== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Req u irements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Cloudy, calm Time Sampled: 05:10am Batch time: 03:51am Temperature - Air: 780F Concrete: 880F Truck No: 117 Ticket No: 7547 Air Content: NA Unit Weight (pcf): NA Overall Placement Location: A, S, C I Lines 11-21 Measured Slump (inches) 6.0 Sample Location: A, S, C, Lines 13-14 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 3 1 09/28/2007 7 6.00 28.27 90,840 3,210 Cone/Shear 3 2 10/19/2007 28 6.00 28.27 116,090 4,110 Cone/Split 3 3 10/19/2007 28 6.00 28.27 115,400 4,080 Shear Average 4,090 3 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 3 of 11 Rone En2~ Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Cloudy, calm Time Sampled: 06:15am Batch time: 05:09am Temperature - Air: 800F Concrete: 900F Truck No: 136 Ticket No: 7534 Air Content: NA Unit Weight (pct): NA Overall Placement Location: A, 8, C I Lines 11-21 Measured Slump (inches) 6.0 Sam pie Location: A, 8, C, Lines 14-15 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 4 1 09/28/2007 7 6.00 28.27 96,740 3,420 Cone/Shear 4 2 10/19/2007 28 6.00 28.27 123,090 4,350 Shear 4 3 10/19/2007 28 6.00 28.27 117,210 4,150 Shear Average 4,250 4 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 4 of 11 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Cloudy Time Sampled: 07:15am Temperature - Air: 800F Truck No: 110 Air Content: NA Overall Placement Location: A, S, C I Lines 11-21 Batch time: 07:06am Concrete: 880F Ticket No: 13775 Unit Weight (pcf): NA Measured Slump (inches) 6.0 Sample Location: A, S, C, Lines 15-16 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 5 1 09/28/2007 7 6.00 28.27 104,690 3,700 Cone/Shear 5 2 10/19/2007 28 6.00 28.27 123,510 4,370 Cone/Split 5 3 10/19/2007 28 6.00 28.27 130,160 4,600 Cone/Shear Average 4,490 5 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 5 of 11 Rone Eni== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Sunny, cloudy Time Sampled: 08: 1 Oam Batch time: 07:40am Temperature - Air: 800F Concrete: 880F Truck No: 138 Ticket No: 13781 Air Content: NA Unit Weight (pcf): NA Overall Placement Location: A, S, C / Lines 11-21 Measured Slump (inches) 7.0 Sample Location: A, S, C, Lines 16-17 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 6 1 09/28/2007 7 6.00 28.27 91,540 3,240 Cone/Split 6 2 10/19/2007 28 6.00 28.27 113,160 4,000 Cone/Split 6 3 10/19/2007 28 6.00 28.27 123,390 4,360 Cone/Split Average 4,180 6 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 6 of 11 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Com pressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Req u irements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Sunny Time Sampled: 08:30am Temperature - Air: 820F Truck No: 128 Air Content: NA Overall Placement Location: A, B, C I Lines 11-21 Batch time: 08:14am Concrete: 860F Ticket No: 13788 Unit Weight (pcf): NA Measured Slump (inches) 7.0 Sample Location: A, B, C, Lines 18-19 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 7 1 09/28/2007 7 6.00 28.27 108,950 3,850 Cone/Split 7 2 10/19/2007 28 6.00 28.27 132,910 4,700 Cone/Split 7 3 10/19/2007 28 6.00 28.27 136,860 4,840 Cone/Split Average 4,770 7 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 7 of 11 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Sunny Time Sampled: 09:50am Temperature - Air: 840F Truck No: 117 Air Content: NA Overall Placement Location: A, B, C I Lines 11-21 Batch time: 09:00am Concrete: 880F Ticket No: 7569 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: A, B, C, Lines 19-19.8 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 8 1 09/28/2007 7 6.00 28.27 103,510 3,660 Cone/Split 8 2 10/19/2007 28 6.00 28.27 129,330 4,570 Cone/Split 8 3 10/19/2007 28 6.00 28.27 119,060 4,210 Cone/Split Average 4,390 8 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 8 of 11 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 15241 1101 W Little York, Ste 600, Houston, TX 11040 4421 Freldrlch, Ste 195, Austin, TX 18144 Corporate Phone: (214)630-9145 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Sunny Time Sampled: 1 0:45am Temperature - Air: 860F Truck No: 138 Air Content: NA Overall Placement Location: A, S, C I Lines 11-21 Batch time: 10:33am Concrete: 900F Ticket No: 13801 Unit Weight (pet): NA Measured Slump (inches) 4.0 Sample Location: A, S, C, Lines 19.8-20.4 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 9 1 09/28/2007 7 6.00 28.27 104,430 3,690 Cone/Split 9 2 10/19/2007 28 6.00 28.27 127,340 4,500 Cone/Split 9 3 10/19/2007 28 6.00 28.27 132,140 4,670 Cone/Split Average 4,590 9 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 9 of 11 Rone En2=::; Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requ i rem ents Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Sunny Time Sampled: 12:10pm Temperature - Air: 900F Truck No: 117 Air Content: NA Overall Placement Location: A, B, C I Lines 11-21 Batch time: 12:00pm Concrete: 900F Ticket No: 13814 Unit Weight (pet): NA Measured Slump (inches) 4.0 Sample Location: A, B, C, Lines 20.4-20.9 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (inZ) (Ibs) (psi) Type 10 1 09/28/2007 7 6.00 28.27 104,020 3,680 Cone/Shear 10 2 10/19/2007 28 6.00 28.27 130,080 4,600 Cone/Split 10 3 10/19/2007 28 6.00 28.27 130,470 4,610 Cone/Split Average 4,610 10 4 11/16/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc,) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd, (CH/KW) Page 10 of 11 Rone En~~ Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299500 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 9349 PW Placement Date: 09/21/2007 Weather Conditions: Sunny Time Sampled: 12:30pm Temperature - Air: 920F Truck No: 109 Air Content: NA Overall Placement Location: A, S, C / Lines 11-21 Batch time: 12:07pm Concrete: 900F Ticket No: 13815 Unit Weight (pet): NA Measured Slump (inches) 4.0 Sample Location: A, B, C, Lines 20.9-21 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 11 1 09/28/2007 7 6.00 28.27 100,240 3,550 Cone/Split 11 2 10/19/2007 28 6.00 28.27 127,690 4,520 Cone/Split 11 3 10/19/2007 28 6.00 28.27 111 ,700 3,950 Cone/Split Average 4,230 11 4 11/16/2007 56 Technician: Denny Harris Started: 02:30am Report Distribution: Orig: Duke Construction, LP (Dallas, TX) Alln: Mr. Paul Byrne (1-ec copy) 1-cc Potter Concrete Alln: Mr. Ryan Skelly 1-cc City of Coppell Alln: Mr. Lee Stone 1-cc City of Coppell Alln: Mr. Larry Davis Finished: 01:15pm Rone Engineering P-~ ~ K. Scott Watson, AET Project Manager LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 11 of 11 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299482 Project No.: 0712932 Date of Service: 09/21/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 3,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design 1.0.: 7751 PW Placement Date: 09/21/2007 Weather Conditions: Clear Time Sampled: 10:00am Temperature - Air: 890F Truck No: 140 Air Content: NA Overall Placement Location: Building piers G, H/26, D-H/27, H, G, L.1, K.A128, B/2A Measured Slump (inches) 6.0 Batch time: 09:31am Concrete: 890F Ticket No: 13796 Unit Weight (pet): NA Sample Location: Building pier H/26 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 1 1 09/28/2007 7 6.00 28.27 96,670 3,420 Cone/Split 1 2 09/28/2007 7 6.00 28.27 89,610 3,170 Shear Average 3,290 1 3 10/19/2007 28 6.00 28.27 119,050 4,210 Cone/Split 1 4 10/19/2007 28 6.00 28.27 122,570 4,340 Cone/Split Average 4,270 5 11/16/2007 56 Remarks: Water added at site: 10 gallons-before sample Technician: Chris Harbour Rone Engineering See Report 299481 for technician time~ ~ Report Distribution: ~ . -----... Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne . . . . .. . · ~ (1-ec copy) - 1-cc Potter Concrete Attn: Mr. Ryan Skelly K. Scott Watson AET 1-cc City of Coppell Attn: Mr. Lee Stone p . t M ' 1-cc City of Coppell Attn: Mr. Larry Davis rOJec anager LIMITATIONS: The test results presented herein were prepared based upon the specifiC samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 1 of 1 Rone En~== Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301922 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 10/23/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 01 Specification Requirements Strength: 3,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design I.D.: 7751 PW Placement Date: 10/12/2007 Weather Conditions: Clear Time Sampled: 11 :20am Temperature - Air: 760F Truck No: 125 Air Content: NA Overall Placement Location: Building piers A/1.95, 2.4, 3, 3.3, 3.8, 4.2, 4.8, 5.2, 5.8, 6.2 Measured Slump (inches) 6.25 Batch time: 10:48am Concrete: 800F Ticket No: 14800 Unit Weight (pcf): NA Sample Location: Same as above REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 1 1 10/19/2007 7 6.00 28.27 89,850 3,180 Shear 1 2 10/19/2007 7 6.00 28.27 93,620 3,310 Shear Average 3,240 1 3 11/09/2007 28 1 4 11/09/2007 28 1 5 12/07/2007 56 Remarks: Water added at site: 25 gallons (before sample by Potter Concrete) Technician: Chris Harbour Rone Engineering See Report 301921 for technician timep ~ Report Distribution: . . ~ Orig: Duke Construction, LP (Dallas, TX) Altn: Mr. Paul Byrne .. (1-ec copy) 1-cc Polter Concrete Altn: Mr. Ryan Skelly K. Scott Watson, AET 1-cc City of Coppell Altn: Mr. Lee Stone Project Manager 1-cc City of Coppell Altn: Mr. Larry Davis ;::::> LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 1 of 1