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Duke Lesley 2A-LR080205 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: 02/05/2008 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 1.0.: NA Placement Date: 01/04/2008 Weather Conditions: C ,oudy 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 (inches) 9.25 Batch time: 03:36am Concrete: 450F Ticket No: 17906 Unit Weight (pcf): NA Sample Location: Grid line A/30 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 01/11/2008 7 6.00 28.27 112,500 3,980 Type2 1 2 02/01/2008 28 6.00 28.27 141,620 5,010 Type6 1 3 02/01/2008 28 6.00 28.27 135,340 4,790 Type6 Average 4,900 1 4 02/29/2008 56 ~~ ~~ ~ t] 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. (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 LiWe 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: 02/05/2008 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. REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Set No. Tested (days) (in) (in') (Ibs) (psi) 2 1 01/11/2008 7 6.00 28.27 126,880 4,490 2 2 02/01/2008 28 5.99 28.18 173,630 6,160 2 3 02/01/2008 28 6.00 28.27 166,750 5,900 Average 6,030 2 4 02/29/2008 56 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 ~rg [9][] firn ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 PROJECT DATA Mix Design I.D.: 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: 04:41 am Concrete: 420F Ticket No: 17916 Unit Weight (pcf): NA Sample Location: Grid line A/29 Fracture Type Type3 Type2 Type5 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 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: 02/05/2008 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 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Set No. Tested (days) (in) (in2) (Ibs) (psi) 3 1 01/11/2008 7 6.00 28.27 116,060 4,100 3 2 02/01/2008 28 6.00 28.27 146,430 5,180 3 3 02/01/2008 28 6.00 28.27 155,930 5,510 Average 5,350 3 4 02/29/2008 56 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 ~EJ ~0 BIE E] DO D Type 1 Type 2 Type 3 Type 4 Type 5 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 C'lches) 7.0 Batch time: 05:51am Concrete: 410F Ticket No: 17928 Unit Weight (pct): NA Sample Location: Grid line B/28 Fracture Type Type2 Type2 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. (KWfKW) 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: 02/05/2008 Project: Hemisphere's at Point West Cappell, 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 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Set No. Tested (days) (in) (in') (Ibs) (psi) 4 1 01/11/2008 7 5.99 28.18 108,450 3,850 4 2 02/01/2008 28 6.00 28.27 153,700 5,440 4 3 02/01/2008 28 6.00 28.27 145,500 5,150 Average 5,290 4 4 02/29/2008 56 Contractor: Duke Construction, LP Concrete Supp!'er: 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 tltJ ~0 firn ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Mix Design I.D.: 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 (pcf): NA Sample Location: Grid line C/27 Fracture Type Type2 Type6 TypeS 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 Uttle 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: 02/05/2008 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 Concre~e Supplier: Potter Concwte 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 PROJECT DATA Mix Design 1.0.: 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 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 01/11/2008 7 6.00 28.27 109,560 3,870 Type6 5 2 02/01/2008 28 6.00 28.27 152,440 5,390 Type5 5 3 02/01/2008 28 6.00 28.27 146,470 5,180 Type3 Average 5,290 5 4 02/29/2008 56 ~t:J [f][g 5IE fJ 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 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: 02/05/2008 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: 10:05am Batch time: 09:49am Temperature - Air: 460F Concrete: 530F Truck No: 138 Ticket No: 17958 Air Content: 2.5% Unit Weight (pcf): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 Measured Slump (inches) 5.25 Sample Location: Grid line Ef25 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 01/11/2008 7 6.00 28.27 126,530 4,480 Type6 6 2 02/01/2008 28 6.00 28.27 169,180 5,980 Type2 6 3 02/01/2008 28 6.00 28.27 164,990 5,840 Type5 Average 5,910 6 4 02/29/2008 56 ~E3 ~~ &E t] 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 e~clusive 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, 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: 02/05/2008 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 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Set No. Tested (days) (in) (in') (Ibs) (psi) 7 1 01/11/2008 7 6.00 28.27 124,970 4,420 7 2 02/01/2008 28 6.00 28.27 159,280 5,630 7 3 02/01/2008 28 6.00 28.27 158,480 5,610 Average 5,620 7 4 02/29/2008 56 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 ~lJ ~0 Krn ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Mix Design I.D.: NA Placement Date 01/04/2008 Weather Conditions: Cloudy Time Sampled: 10:35am Temperature - Air: 53DF 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: 55DF Ticket No: 17966 Unit Weight (pet): NA Sample Location: Grid line F/24 Fracture Type Type2 Type2 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 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: 02/05/2008 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 PI;mt: 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 Weatller 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) (in') (Ibs) (psi) Type 8 1 01/11/2008 7 6.00 28.27 129,030 4,560 Type2 8 2 02/01/2008 28 6.00 28.27 169,180 5,980 Type3 8 3 02/01/2008 28 6.00 28.27 173,200 6,130 Type3 Average 6,050 8 4 02/29/2008 56 ~r:J ~~ fIE lSJ 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, elC.) 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: 02/05/2008 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. REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Set No. Tested (days) (in) (in') (Ibs) (psi) 9 1 01/11/2008 7 6.00 28.27 103,900 3,670 9 2 02/01/2008 28 6.00 28.27 143,620 5,080 9 3 02/01/2008 28 6.00 28.27 142,140 5,030 Average 5,050 9 4 02/29/2008 56 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 ~~ ~Q] 5ru f] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 PROJ ECT DATA Mix Design I.D.: 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 Fracture Type Type2 Type5 Type5 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, 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: 02/05/2008 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, 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-:10 Measured Slump (inches) 6.0 Sample Location: Grid lines 1/21 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Set No. Tested (days) (in) (in') (Ibs) (psi) 10 1 01/11/2008 7 6.00 28.27 100,650 3,560 10 2 02/01/2008 28 6.00 28.27 138,440 4,900 10 3 02/01/2008 28 6.00 28.27 138,200 4,890 Average 4,890 10 4 02/29/2008 56 0r3 ~Q] ~ 5J DO D Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 Fracture Type Type6 Type5 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. (K'N/KW) Page 10 of 12 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.: 309667 Project No.: 0712932 Date of Service: 01104/2008 Report Date: 02/05/2008 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 Mix Design 1.0.: NA Placement Date: 01/04/2008 V, aather 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 (pet): NA Overall Placement Location: Paving, north side of building 90', grid line 15-30 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 Measured Slump (inches) 5.75 Sample Location: Grid lines K/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) (in2) (Ibs) (psi) Type 11 1 01/11/2008 7 6.00 28.27 105,060 3,720 Type6 11 2 02/01/2008 28 6.00 28.27 146,830 5,190 Type6 11 3 02/01/2008 28 6.00 28.27 155,860 5,510 Type6 Average 5,350 11 4 02/29/2008 56 8)~ [g]Q] ~ EJ 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 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, 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: 02105/2008 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 Conditioi s: 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 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 12 1 01/11/2008 7 6.00 28.27 115,150 4,070 Type2 12 2 02/01/2008 28 5.99 28.18 161,290 5,720 Type4 12 3 02/01/2008 28 6.00 28.27 153,620 5,430 TypeS Average 5,580 12 4 02/29/2008 56 0E:J [9]QJ 5IE [s] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Type 6 Started: 02:15am Finished: 04:15pm Technician: Raymond Moore 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 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. (KW/KW) Page 12 of 12