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Duke Lesley 2A-LR080114 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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: 1 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 Mix Design I.D.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy Time Sampled: 04:00am Temperature - Air: 300F Truck No: 104 Air Content: 5.5% Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inche:i) 9.25 Batch time: 03:36am Concrete: 450F Ticket No: 17906 Unit Weight (pet): NA Sample Location: Grid line N30 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 112,500 Cylinder Marked Date Set No. Tested 1 1 01/11/2008 1 2 02/01/2008 1 3 02/01/2008 1 4 02/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~E:J ~[g &E ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Compressive Strength (psi) 3,980 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. (KW/KW) Page 1 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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: 1 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 Mix Design 1.0.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy Time Sampled: 04:50am Temperature - Air: 310F Truck No: 101 Air Content: 2.0% Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 6.0 Batch time: 04:41am Concrete: 420F Ticket No: 17916 Unit Weight (pet): NA Sample Location: Grid line N29 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 126,880 Cylinder Marked Date Set No. Tested 2 1 01/11/2008 2 2 02/01/2008 2 3 02/01/2008 2 4 02129/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~E:J ~~ fil] E] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Compressive Strength (psi) 4,490 Fracture Type Type3 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 tihe exclusive use of the clients to whom they are addressed and shall not be reproduced except in full witihout the written approval of Rone Engineering Services, Ltd. (KW/KW) Page 2 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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: 1 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 Mix Design I.D.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy Time Sampled: 06:05am Temperature - Air: 300F Truck No: 131 Air Content: 2.0% Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 7.0 Batch time: 05:51am Concrete: 410F Ticket No: 17928 Unit Weight (pet): NA Sample Location: Grid line 8/28 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 3 1 01/11/2008 7 6.00 28.27 116,060 4,100 Type2 3 2 02/01/2008 28 3 3 02/01/2008 28 3 4 02/29/2008 56 ~Ej [g]~ 5m E;] 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 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 3 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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 S"Jpplier: Potter Concrete Plant: 1 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 Mix Design 1.0.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy Time Sampled: 08:00am Temperature - Air: 320F Truck No: 131 Air Content: 3.0% Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 5.25 Batch time: Concrete: 500F Ticket No: 17937 Unit Weight (pet): NA Sample Location: Grid line C/27 REPORT OF TESTS Cylinder Marked Date Age Diameter Area Set No. Tested (days) (in) (in') 4 1 01/11/2008 7 5.99 28.18 4 2 02/01/2008 28 4 3 02/01/2008 28 4 4 02/29/2008 56 ~EJ ~~ 5rn G DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 108,450 Compressive Strength (psi) 3,850 Fracture Type Type2 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. (KW/KW) Page 4 of 12 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W LitUe York, 8te 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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.): 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.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy, windy Time Sampled: 09:00am Batch time: 08:32am Temperature - Air: 320F Concrete: 480F Truck No: 104 Ticket No: 17746 Air Content: 3.0% Unit Weight (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) '6.0 Sample Location: Grid line D/26 REPORT OF TESTS Cylinder Marked Date Set No. Tested 5 1 01/11/2008 5 2 02/01/2008 5 3 02/01/2008 5 4 02/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~t:3 ~~ 5IE lSJ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 109,560 Compressive Strength (psi) 3,870 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. (KW/KW) Page 5 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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 Concrpte Supplier: Potter Concrete Plant: 1 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.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy, windy Time Sampled: 10:05am Batch time: 09:49am Temperature - Air: 460F Concrete: 530F Truck No: 138 Ticket No: 17958 Air Content: 2.5% Unit Weight (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 5.25 Sample Location: Grid line E/25 REPORT OF TESTS Cylinder Marked Date Set No. Tested 6 1 01/11/2008 6 2 02/01/2008 6 3 02/01/2008 6 4 02/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~~ ~l!J 5IE E;J DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 126,530 Compressive Strength (psi) 4,480 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. (KW/KW) Page 6 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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: Pottp.r Concrete Plant: 1 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 Mix Design I.D.: NA Placemer~ Date: 01/04/2008 Weather Conditions: Cloudy Time Sampled: 10:35am Temperature - Air: 530F Truck No: 131 Air Content: 2.0% Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 4.5 Batch time: Concrete: 550F Ticket No: 17966 Unit Weight (pct): NA Sample Location: Grid line F/24 REPORT OF TESTS Cylinder Marked Date Set No. Tested 7 1 01/11/2008 7 2 02/01/2008 7 3 02/01/2008 7 4 02/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~E:j ~~ Krn ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 124,970 Compressive Strength (psi) 4,420 Fracture Type Type2 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. (KW/KW) Page 7 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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.): 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.: NA Placement Date: 01/01 '2008 Weather Conditions: Cloudy, windy Time Sampled: Batch time: Temperature - Air: 520F Concrete: 560F Truck No: 104 Ticket No: 17976 Air Content: 2.2% Unit Weight (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 5.0 Sample Location: Grid line G/23 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 01/11/2008 7 6.00 28.27 129,030 4,560 Type2 8 2 02/01/2008 28 8 3 02/01/2008 28 8 4 02/29/2008 56 tat:] ~gJ fill] Q 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 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 8 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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.): 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 ?ROJECT DATA Mix Design 1.0.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy, windy Time Sampled: 11 :54am Batch time: 12:04pm Temperature - Air: 550F Concrete: 600F Truck No: 144 Ticket No: 17986 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 7.0 Sample Location: Grid line H/22 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 103,900 Cylinder Marked Date Set No. Tested 9 1 01/11/2008 9 2 02/01/2008 9 3 02/01/2008 9 4 02/29/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 0tSj ~~ 5IE E] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Area (in2) 28.27 Compressive Strength (psi) 3,670 Fracture Type Type2 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. (KW/KW) Page 9 of 12 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, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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.): 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.: NA Placement Date: 01 f04/2008 Weather Conditions: CIJudy, windy Time Sampled: 01 :OOpm Batch time: Temperature - Air: 550F Concrete: 600F Truck No: 101 Ticket No: 17996 Air Content: 5.0% Unit Weight (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Sh'mp (inches) 6.0 Sample Location: Grid lines 1/21 REPORT OF TESTS Cylinder Marked Date Age Diameter Area Set No. Tested (days) (in) (in') 10 1 01/11/2008 7 6.00 28.27 10 2 02/01/2008 28 10 3 02/01/2008 28 10 4 02/29/2008 56 ~Ej ~[g ~ bJ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 100,650 Compressive Strength (psi) 3,560 Fracture Type Type6 Type 6 L1MITA TrONS: 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/KVV) Page 10 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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.): 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.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy, windy Time Sampled: 01:40pm Batch time: Temperature - Air: 600F Concrete: 570F Truck No: 101 Ticket No: 18007 Air Content: 5.0% Unit Weight (pct): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 5.75 Sample Location: Grid lines K/19 REPORT OF TESTS Cylinder Marked Date Age Diameter Area Set No. Tested (days) (in) (in') 11 1 01/11/2008 7 6.00 28.27 11 2 02/01/2008 28 11 3 02/01/2008 28 11 4 02/29/2008 56 (8~ ~~ ~ lS] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 105,060 Compressive Strength (psi) 3,720 Fracture Type Type6 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. (KW/KW) Page 11 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01/04/2008 Report Date: 01/14/2008 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.): 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.: NA Placement Date: 01/04/2008 Weather Conditions: Cloudy, sunny Time Sampled: Batch time: Temperature - Air: 600F Concrete: 580F Truck No: 101 Ticket No: 18019 Air Content: 3.0% Unit Weight (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump ',inches) 5.0 Sample Location: Grid lines J/20 REPORT OF TESTS Cylinder Marked Date Age Diameter Area Set No. Tested (days) (in) (in') 12 1 01/11/2008 7 6.00 28.27 12 2 02/01/2008 28 12 3 02/01/2008 28 12 4 02/29/2008 56 ~r::J ~~ Krn [S] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 Technician: Raymond Moore Started: 02:15am Report Distribution: Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne (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 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 115,150 Compressive Strength (psi) 4,070 Fracture Type Type2 Finished: 04:15pm Rone Engineering p~ ~~ K. Scott Watson, AET Project Manager LIMITATIONS: The lest 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 12 of 12