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Duke Lesley 2A-LR071217 Rone Engineering . 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.: 305549 Project No.: 0712932 Date of Service: 11/15/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 6% 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.: 7753PW Placement Date: 11/15/2007 Weather Conditions: Clear Time Sampled: 05:00am Temperature - Air: Truck No: NA Air Content: 5.2% Overall Placement Location: East side of building 7, parking lot, grid lines 17-26 Measured Slump (inches) 5.0 Batch time: Concrete: Ticket No: NA Unit Weight (pet): NA Sample Location: Grid line 18 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 11/22/2007 7 6.00 28.27 105,550 3,730 Cone/Split 1 2 12/13/2007 28 6.00 28.27 123,600 4,370 Shear 1 3 12/13/2007 28 6.00 28.27 122,930 4,350 Cone/Split Average 4,360 1 4 01/10/2008 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. (KW/KW) Page 1 of 4 Rone Engineering . 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.: 305549 Project No.: 0712932 Date of Service: 11/15/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 6% 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.: 7753PW Placement Date: 11/15/2007 Weather Conditions: Clear Time Sampled: 06:00am Temperature - Air: Truck No: 134 Air Content: 5.6% Overall Placement Location: East side of building 7, parking lot, grid lines 17-26 Measured Slump (inches) 5.25 Batch time: Concrete: Ticket No: 25872 Unit Weight (pcf): NA Sample Location: Grid line 20 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 2 1 11/22/2007 7 6.00 28.27 87,860 3,110 Cone/Split 2 2 12/13/2007 28 6.00 28.27 119,710 4,230 Cone/Split 2 3 12/13/2007 28 6.00 28.27 121,600 4,300 Cone/Split Average 4,270 2 4 01/10/2008 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. (KW/KW) Page 2 of 4 Rone Engineering . 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.: 305549 Project No.: 0712932 Date of Service: 11/15/2007 Report Date: 12/17/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples offresh 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 6% 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.: 7753PW Placement Date: 11/15/2007 Weather Conditions: Clear Time Sampled: 07:15am Temperature - Air: Truck No: 129 Air Content: 4.8% Overall Placement Location: East side of building 7, parking lot, grid lines 17-26 Measured Slump (inches) 5.5 Batch time: Concrete: Ticket No: 25884 Unit Weight (pct): NA Sample Location: Grid line 22 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 11/22/2007 7 6.00 28.27 93,380 3,300 Shear 3 2 12/13/2007 28 6.00 28.27 114,630 4,050 Shear 3 3 12/13/2007 28 6.00 28.27 131,280 4,640 Shear Average 4,350 3 4 01/10/2008 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. (KWIKW) Page 3 of 4 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 305549 Project No.: 0712932 Date of Service: 11/15/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 6% 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.: 7753PW Placement Date: 11/15/2007 Weather Conditions: Clear Time Sampled: 10:00am Temperature - Air: Truck No: 101 Air Content: 5.3% Overall Placement Location: East side of building 7, parking lot, grid lines 17-26 Batch time: Concrete: Ticket No: 25902 Unit Weight (pcf): NA Measured Slump (inches) 6.25 Sample Location: Grid line 24 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 11/22/2007 7 6.00 28.27 74,490 2,630 Shear 4 2 12/13/2007 28 6.00 28.27 94,400 3,340 Shear 4 3 12/13/2007 28 6.00 28.27 104,960 3,710 Cone/Split Average 3,530 * 4 4 01/10/2008 56 * Does not comply with specified strength Technician: Eric Auger Started: 02:15am Report Distribution: Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byme (1-ec copy) 1-cc Potter Concrete Attn: Mr Ryan Skelly 1-cc City of Coppell Attn: Mr. Lee Stone 1-cc City of Coppell Attn: Mr. Larry Davis Finished: 0215~ ~ 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. (KW/KW) Page 4 of 4 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Req uirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Clear Time Sampled: 03:00am Temperature - Air: 400F Truck No: 108 Air Content: 4.1 % Overall Placement Location: Paving Batch time: 02:45am Concrete: 800F Ticket No: 9655 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 150' north, 10' east from northwest building corner REPORT OF TESTS Cylinder Marked Date Set No. Tested 1 1 12/11/2007 1 2 01/01/2008 1 3 01/01/2008 1 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~E:9 ~~ [illJ t-] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 96,700 Compressive Strength (psi) 3,420 Fracture Type Type5 Area (in2) 28.27 Type 6 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. (TMlJB) Page 1 of 16 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12104/2007 Weather Conditions: Clear Time Sampled: 04:45am Temperature - Air: 400F Truck No: 138 Air Content: 4.2% Overall Placement Location: Paving Batch time: 04:23am Concrete: 800F Ticket No: 9670 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: 100' north, 100' east from northwest building corner Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 100,850 Area (in') 28.27 Type 6 REPORT OF TESTS Compressive Strength (psi) 3,570 Fracture Type Type2 Cylinder Marked Date Set No. Tested 2 1 12/11/2007 2 2 01/01/2008 2 3 01/01/2008 2 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 latsj ~[2] ~ E] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 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. (TMlJB) Page 3 of 16 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Clear Time Sampled: 05:50am Temperature - Air: 420F Truck No: 139 Air Content: 4.0% Overall Placement Location: Paving Batch time: 05:33am Concrete: 800F Ticket No: 9685 Unit Weight (pcf): NA Measured Slump (inches) 5.75 Sample Location: 125' north, 215' east from northwest building corner Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 86,630 Area (in') 28.27 Type 6 REPORT OF TESTS Compressive Strength (psi) 3,060 Fracture Type Type2 Cylinder Marked Date Set No. Tested 3 1 12/11/2007 3 2 01/01/2008 3 3 01/01/2008 3 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~~ [I1]~ ~ 51 DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 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. (TM/JB) Page 5 of 16 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, 8te 600, Houston, TX 77040 4421 Freidrich, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Clear Time Sampled: 07:00am Temperature - Air: 450F Truck No: 110 Air Content: 4.3% Overall Placement Location: Paving Batch time: 06:42am Concrete: 800F Ticket No: 9699 Unit Weight (pet): NA Measured Slump (inches) 5.75 Sample Location: 25' north, 300' east from northwest building corner Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 90,290 Diameter (in) 6.00 Area (in') 28.27 REPORT OF TESTS Cylinder Marked Date Set No. Tested 4 1 12/11/2007 4 2 01/01/2008 4 3 01/01/2008 4 4 01/29/2008 Age (days) 7 28 28 56 f3JE:] ~[g Kill E] 00 0 Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 Compressive Strength (psi) 3,190 Fracture Type Type6 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. (TM/JB) Page 7 of 16 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Sunny, clear Time Sampled: 08:55am Batch time: 08:36am Temperature - Air: 520F Concrete: 820F Truck No: 103 Ticket No: 9716 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving Measured Slump (inches) 5.25 Sample Location: 75' north, 375' east from northwest building corner REPORT OF TESTS r21C3 [g][J BIll GJ DO 0 Cylinder Marked Date Set No. Tested 5 1 12/11/2007 5 2 01/01/2008 5 3 01/01/2008 5 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 102,430 Compressive Strength (psi) 3,620 Fracture Type Type2 Area (in') 28.27 Type 6 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. (TM/JB) Page 9 of 16 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Sunny, clear Time Sampled: 09:55am Batch time: 09:39am Temperature - Air: 550F Concrete: 840F Truck No: 139 Ticket No: 9730 Air Content: 4.4% Unit Weight (pet): NA Overall Placement Location: Paving Measured Slump (inches) 5.0 Sample Location: 50' north, 450' east from northwest building corner REPORT OF TESTS Cylinder Marked Date Set No. Tested 6 1 12/11/2007 6 2 01/01/2008 6 3 01/01/2008 6 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 0E:3 [I][g [)J] t;J DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 105,910 Compressive Strength (psi) 3,750 Fracture Type Type6 Area (in2) 28.27 Type 6 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. (TMIJB) Page 11 of 16 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Sunny, clear Time Sampled: 11:10am Batch time: 10:48am Temperature - Air: 580F Concrete: 880F Truck No: 138 Ticket No: 9744 Air Content: 4.5% Unit Weight (pcf): NA Overall Placement Location: Paving Measured Slump (inches) 4.75 Sample Location: 100' north, 550' east from northwest building corner REPORT OF TESTS Cylinder Marked Date Set No. Tested 7 1 12/11/2007 7 2 01/01/2008 7 3 01/01/2008 7 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~~ ~[] BIB EJ 00 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 116,930 Compressive Strength (psi) 4,140 Fracture Type Type6 Area (in') 28.27 Type 6 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. (TM/JB) Page 13 of 16 Rone Engineering . 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.: 307153 Project No.: 0712932 Date of Service: 12/04/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/04/2007 Weather Conditions: Sunny, clear Time Sampled: 12:20pm Batch time: 12:06pm Temperature - Air: 600F Concrete: 860F Truck No: 138 Ticket No: 9760 Air Content: 4.2% Unit Weight (pet): NA Overall Placement Location: Paving Measured Slump (inches) 4.75 Sample Location: 125' north, 675' east from northwest building corner REPORT OF TESTS 0tj ~~ [ill] E;] DO 0 Cylinder Marked Date Set No. Tested 8 1 12/11/2007 8 2 01/01/2008 8 3 01/01/2008 8 4 01/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 112,710 Compressive Strength (psi) 3,990 Fracture Type Type6 Area (in') 28.27 Type 6 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. (TM/JB) Page 15 of 16 Rone Engineering . 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.: 307302 Project No.: 0712932 Date of Service: 12/05/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/05/2007 Weather Conditions: Clear Time Sampled: 03:10am Temperature - Air: 440F Truck No: 101 Air Content: 4.5% Overall Placement Location: Paving, Point West VII Batch time: 02:58am Concrete: 800F Ticket No: 9764 Unit Weight (pcf): NA Measured Slump (inches) 5.25 Sample Location: 50' north, 700' east from northwest building corner REPORT OF TESTS Cylinder Marked Date Set No. Tested 1 1 12/12/2007 1 2 01/02/2008 1 3 01/02/2008 1 4 01/30/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~r3 ~l9 5IE [] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 107,150 Compressive Strength (psi) 3,790 Fracture Type Type2 Area (in') 28.27 Type 6 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. (TM/JB) Page 1 of 8 Rone Engineering . 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.: 307302 Project No.: 0712932 Date of Service: 12/05/2007 Report Date: 12/17/2007 Project: Hemisphere's at Point West Coppel!, 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/05/2007 Weather Conditions: Clear Time Sampled: 04:30am Temperature - Air: 440F Truck No: 136 Air Content: 4.4% Overall Placement Location: Paving, Point West VII Batch time: 04: 12am Concrete: 800F Ticket No: 9777 Unit Weight (pcf): NA Measured Slump (inches) 5.25 Sample Location: 15' north, 750' east from northwest building corner REPORT OF TESTS ~r:g ~g] 5ffi bJ DO 0 cylinder Marked Date Set No. Tested 2 1 12/12/2007 2 2 01/02/2008 2 3 01/02/2008 2 4 01/30/2008 Age (days) 7 28 28 56 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 113,660 Compressive Strength (psi) 4,020 Fracture Type Type2 Diameter (in) 6.00 Area (in2) 28.27 Type 6 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. (TM/JB) Page 2 of 8 Rone Engineering . 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.: 307302 Project No.: 0712932 Date of Service: 12/05/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/05/2007 Weather Conditions: Clear Time Sampled: 06:05am Temperature - Air: 500F Truck No: 144 Air Content: 4.3% Overall Placement Location: Paving, Point West VII Batch time: 05:50am Concr~te: 820F Ticket No: 9792 Unit Weight (pet): NA Measured Slump (inches) 5.75 Sample Location: 75' north, 825' east from northwest building corner REPORT OF TESTS r8jt:j ~~ BIll lSJ DO 0 Cylinder Marked Date Set No. Tested 3 1 12/12/2007 3 2 01/02/2008 3 3 01/02/2008 3 4 01/30/2008 Age (days) 7 28 28 56 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 105,950 Compressive Strength (psi) 3,750 Fracture Type Type2 Diameter (in) 6.00 Area (in') 28.27 Type 6 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. (TM/JB) Page 3 of 8 Rone Engineering . 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.: 307302 Project No.: 0712932 Date of Service: 12/05/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/05/2007 Weather Conditions: Sunny, clear Time Sampled: 07:15am Batch time: 07:00am Temperature - Air: 530F Concrete: 840F Truck No: 120 Ticket No: 9807 Air Content: 4.5% Unit Weight (pcf): NA Overall Placement Location: Paving, Point West VII Measured Slump (inches) 5.75 Sample Location: 10' north, 900' east from northwest building corner REPORT OF TESTS r823 ~gj 5IlJ b] 00 0 Cylinder Marked Date Set No. Tested 4 1 12/12/2007 4 2 01/02/2008 4 3 01/02/2008 4 4 01/30/2008 Age (days) 7 28 28 56 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 104,130 Compressive Strength (psi) 3,680 Fracture Type Type3 Diameter (in) 6.00 Area (in') 28.27 Type 6 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. (TM/JB) Page 4 of 8 Rone Engineering . 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.: 307302 Project No.: 0712932 Date of Service: 12/05/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/05/2007 Weather Conditions: Sunny, clear Time Sampled: 09:30am Batch time: 09:13am Temperature - Air: 600F Concrete: 860F Truck No: 117 Ticket No: 9824 Air Content: 4.4% Unit Weight (pct): NA Overall Placement Location: Paving, Point West VII Measured Slump (inches) 5.0 Sample Location: 25' south, 600' east from southwest building corner 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 12/12/2007 7 6.00 28.27 125,820 4,450 Type2 5 2 01/02/2008 28 5 3 01/02/2008 28 5 4 01/30/2008 56 0[3 ~[J] [illj ~ DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 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. (TMlJB) Page 5 of 8 Rone Engineering . 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.: 307302 Project No.: 0712932 Date of Service: 12/05/2007 Report Date: 12/17/2007 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: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/05/2007 Weather Conditions: Clear Time Sampled: 11 :40am Temperature - Air: 600F Truck No: 134 Air Content: 4.5% Overall Placement Location: Paving, Point West VII Batch time: 11 :22am Concrete: 860F Ticket No: 9838 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 20' south, 500' east from southwest building corner Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 126,230 Diameter (in) 6.00 Area (inZ) 28.27 REPORT OF TESTS ~rJ ~~ Bill t;l DO 0 Cylinder Marked Date Set No. Tested 6 1 12/12/2007 6 2 01/02/2008 6 3 01/02/2008 6 4 01/30/2008 Age (days) 7 28 28 56 Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 Compressive Strength (psi) 4,460 Fracture Type Type2 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. (TM/JB) Page 7 of 8 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, 8te 600, Houston, TX 77040 4421 Freidrich, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 307460 Project No.: 0712932 Date of Service: 12/06/2007 Report Date: 12/17/2007 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: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/06/2007 Weather Conditions: Clear Time Sampled: 07:10am Temperature - Air: 500F Truck No: 103 Air Content: 4.6% Overall Placement Location: Paving Batch time: 06:46am Concrete: 800F Ticket No: 17395 Unit Weight (pet): NA Measured Slump (inches) 5.25 Sample Location: 50' south, 700' east from southwest building corner REPORT OF TESTS Cylinder Marked Date Set No. Tested 1 1 12/13/2007 1 2 01 /03/2008 1 3 01/03/2008 1 4 01/31/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~r:g ~[g 51] ~ DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 124,130 Compressive Strength (psi) 4,390 Fracture Type Type2 Area (in') 28.27 Type 6 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. (TMlJB) Page 1 of 6 Rone Engineering . 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.: 307460 Project No.: 0712932 Date of Service: 12/06/2007 Report Date: 12/17/2007 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: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/06/2007 Weather Conditions: Sunny, clear Time Sampled: 08:30am Batch time: 08:16am Temperature - Air: 520F Concrete: 820F Truck No: 126 Ticket No: 17411 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving Measured Slump (inches) 5.25 Sample Location: 25' south, 775' east from southwest building corner 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 2 1 12/13/2007 7 6.00 28.27 114,850 4,060 Type2 2 2 01/03/2008 28 2 3 01/03/2008 28 2 4 01/31/2008 56 ~E:j ~Q] 5IE E;J DO D Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 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 contnol. 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. (TMlJB) Page 3 of 6 Rone Engineering . 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.: 307460 Project No.: 0712932 Date ot Service: 12106/2007 Report Date: 12/17/2007 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: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% 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.: 7753PW Placement Date: 12/06/2007 Weather Conditions: Sunny, clear Time Sampled: 08:30am Batch time: 08:16am Temperature - Air: 520F Concrete: 820F Truck No: 126 Ticket No: 17411 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving Measured Slump (inches) 5.25 Sample Location: 25' south, 775' east from southwest building corner REPORT OF TESTS Cylinder Marked Date Set No. Tested 3 1 12/13/2007 3 2 01/03/2008 3 3 01/03/2008 3 4 01/31/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 [8j~ ~~ rnJ [] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 110,090 Compressive Strength (psi) 3,890 Fracture Type Type5 Area (in') 28.27 Type 6 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. (TMJJB) Page 5 of 6