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Duke Lesley 1A-LR080212 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.: 312575 Project No.: 0713408 Date of Service: 02/04/2008 Report Date: 02/12/2008 Project: Point West VI, I" 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: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 7753 Placement Date: 02/04/2008 Weather Conditions: Cloudy, windy Time Sampled: 02:45am Batch time: Temperature - Air: 660F Concrete: 670F Truck No: 126 Ticket No: Air Content: 6.0% Unit Weight (pet): NA Overall Placement Location: (Paving) Parking spaces on southeast corner of Building VI Measured Slump (inches) 5.0 Sample Location: 40' south from grid line U42 REPORT OF TESTS Cylinder Marked Set No. - - 1 1 Date Tested 02/07/2008 Age (days) 3 Diameter (in) 6.00 1 1 2 3 03/03/2008 03/03/2008 28 28 4 03/31/2008 56 0Ej ~l1J ~ ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 121,120 Compressive Strength (psi) 4,280 Fracture Type Type 5 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 a[e addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (GKlKW) 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.: 312575 Project No.: 0713408 Date of Service: 02/04/2008 Report Date: 02/12/2008 Project: Point West VI 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 Cor,crete Supplier: Potter Concrete Plant: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 7753 Placement Date: 02/04/2008 Weather Conditions: Cloudy, windy Time Sampled: 04:30am Batch time: Temperature - Air: 670F Concrete: 680F Truck No: 115 Ticket No: Air Content: 5.7% Unit Weight (pet): NA Overall Placement Location: (Paving) Parking spaces on southeast corner of Building VI Measured Slump (inches) 5.75 Sample Location: 35' south from grid line U41 REPORT OF TESTS Cylinder Marked Date Set No. Tested 2 1 02/11/2008 2 2 03/03/2008 2 3 03/03/2008 2 4 03/31/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~EJ ~[J-J ~ LJ DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 102,100 Compressive Strength (psi) 3,610 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. (GKlKW) 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.: 312575 Project No.: 0713408 Date of Service: 02/04/2008 Report Date: 02/12/2008 Project: Point West VI 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: Ootter Concrete Plant: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 7753 Placemp.nt Date: 02/04/2008 Weathe: Conditions: Cloudy, windy Time Sampled: 07:00am Batch time: Temperature - Air: 680F Concrete: 700F Truck No: 139 Ticket No: Air Content: 4.0% Unit Weight (pcf): NA Overall Placement Location: (Paving) Parking spaces on southeast corner of Building VI Measured Slump (inches) 5.5 Sample Location: 40' south from grid line L/39 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 02/11/2008 7 6.00 28.27 171,040 6,050 Type2 3 2 03/03/2008 28 3 3 03/03/2008 28 3 4 03/31/2008 56 ~EJ ~l9 5I] ~ 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. (GK/KW) 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.: 312575 Project No.: 0713408 Date of Service: 02/04/2008 Report Date: 02/12/2008 Project: Point West VI 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: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 7753 Placement Date: 02/04/2008 Weather Conditions: Cluudy, windy Time Sampled: 08:30am Batch time: Temperature - Air: 690F Concrete: 720F Truck No: 126 Ticket No: Air Content: 5.0% Unit Weight (pet): NA Overall Placement Location: (Paving) Parking spaces on southeast comer of Building VI Measured Slump (inches) 5.0 Sample Location: 30' north from AJ6.7 REPORT OF TESTS Cylinder Marked Date Set No. Tested 4 1 02/11/2008 4 2 03/03/2008 4 3 03/03/2008 4 4 03/31/2008 Age (days) 7 Diameter (in) 6.00 28 28 56 ~tj ~~ [IE lS] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 163,890 Compressive Strength (psi) 5,800 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. (GKlKW) 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.: 312575 Project No.: 0713408 Date of Service: 02/04/2008 Report Date: 02/12/2008 Project: Point West VI 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: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): NA Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 PROJECT DAT~ Mix Design J.D.: 7753 Placement Date: 02/04/2008 Weather Conditions: Partly cloudy, windy Time Sampled: 12:35pm Batch time: Temperature - Air: 770F Concrete: 770F Truck No: 135 Ticket No: Air Content: 5.7% Unit Weight (pcf): NA Overall Placement Location: (Paving) Parking spaces on southeast corner of Building VI Measured Slump (il Jches) 5.0 Sample Location: 77' south from grid line U5.2 REPORT OF TESTS Cylinder Marked Date Set No. Tested 5 1 02/11/2008 5 2 03/03/2008 5 3 03/03/2008 5 4 03/31/2008 Age (days) 7 Diameter (in) 6.01 28 28 56 ~EJ ~~ ill] E;] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 148,890 Compressive Strength (psi) 5,250 Fracture Type Type2 Area (in2) 28.37 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. (GK/KW) Page 6 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.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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) 1 1 01/21/2008 7 6.00 28.27 113,440 4,010 1 2 02/11/2008 28 6.00 28.27 153,880 5,440 1 3 02/11/2008 28 6.00 28.27 159,750 5,650 Average 5,550 4 03/10/2008 56 Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): 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 laE3 [9J[1J ~ t] DO D Type 1 Type 2 Type 3 Type 4 Type 5 PROJECT DATA Mix Design I.D.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Clear Time Sampled: 03:20am Temperature - Air: 400F Truck No: 133 Air Content: 4.6% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches, 5.0 Batch time: 03:03am Concrete: 550F Ticket No: 18379 Unit Weight (pet): NA Sample Location: 10' west from northwest corner of building 6 Fracture Type Type2 Type2 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. (TM/KW) Page 1 of 19 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.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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 Cr>ncrete Supplier: Potter Concrete PI.mt: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 5% 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.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Clear Time Sampled: 03:50am Temperature - Air: 400F Truck No: 103 Air Content: 4.3% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.0 Batch time: 03:32am Concrete: 540F Ticket No: 18379 Unit Weight (pcf): NA Sample Location: 25' west from northwest corner of building 6 REPORT OF TESTS Maximum Compressive Age Diameter Area Load Strength (days) (in) (in2) (Ibs) (psi) 7 6.00 28.27 111,950 3,960 28 6.00 28.27 160,010 5,660 28 6.00 28.27 149,090 5,270 Average 5,470 56 ~ DO D Cylinder Marked Set No. - - 2 1 Date Tested 01/21/2008 2 2 2 3 02/11/2008 02/11/2008 2 03/10/2008 4 ~r:J ~QJ Type 1 Type 2 Type 3 Type 4 Type 5 Concrete Compressive Cylinder 6" x 12" Fracture Type Type2 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. (TM/KW) Page 3 of 19 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 15241 1101 W Little York, Ste 600, Houston, TX 11040 4421 Freidrich, Ste 195, Austin, TX 18144 Corporate Phone: (214) 630-9145 Report of Concrete Compressive Strength Test Report No.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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 (%): 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 Mix Design I.D.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Clear Time Sampled: 04:48am Temperature - Air: 410F Truck No: 138 Air Content: 4.5% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.5 Batch time: 04:38am Concrete: 560F Ticket No: 18392 Unit Weight (pet): NA Sample Location: 90' west from northwest corner of building 6 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 01/21/2008 7 6.00 28.27 98,810 3,490 Type~ 3 2 02/11/2008 28 6.00 28.27 139,360 4,930 Type3 3 3 02/11/2008 28 6.00 28.27 133,260 4,710 Type2 Average 4,820 3 4 03/10/2008 56 ~~ rrmm t:Jt:j Type 2 [}lB ~ DO D Type 1 Type 3 Type 4 Type 5 Type 6 L1MITA nONS: 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/KW) Page 5 of 19 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.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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) 4 1 01/21/2008 7 6.00 28.27 102,810 3,640 4 2 02/11/2008 28 6.00 28.27 134,380 4,750 4 3 02/11/2008 28 6.00 28.27 140,230 4,960 Average 4,860 4 4 03/10/2008 56 Contractor: Duke Construction, LP Concrete Supplier: Pottp- Concrete Plant: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" 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 ~EJ ~gJ ill] E;J DO D Type 1 Type 2 Type 3 Type 4 Type 5 Mix Design I.D.: 7753PW6 Placement Date: 01/14/2008 Weather Conditior,s: Clear Time Sampled: 05:50am Temperature - Air: 410F Truck No: 135 Air Content: 4.2% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.0 Batch time: 05:32am Concrete: 570F Ticket No: 18405 Unit Weight (pcf): NA Sample Location: 180' west from northwest corner of building 6 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. (TMlKW) Page 7 of 19 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.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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) 5 1 01/21/2008 7 6.00 28.27 109,850 3,890 5 2 02/11/2008 28 6.00 28.27 140,940 4,980 5 3 02/11/2008 28 6.00 28.27 129,650 4,590 Average 4,790 5 4 03/10/2008 56 Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 5% 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 tjEJ ~~ 5IE [S] DO 0 Type 1 Type 2 Type 3 Type 4 Type 5 Mix Design I.D.: 7753PW6 PlaCelT'1nt Date: 01/14/2008 Weather Conditions: Sunny Time Sampled: 06:43am Temperature - Air: 350F Truck No: 133 Air Content: 4.2% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches), 5.5 Batch time: 06:20am Concrete: 520F Ticket No: 18417 Unit Weight (pet): NA Sample Location: 210' west from northwest corner of building 6 Fracture Type Type6 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. (TM/KW) Page 9 of 19 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.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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) 6 1 01/21/2008 7 6.00 28.27 119,610 4,230 6 2 02/11/2008 28 6.00 28.27 142,030 5,020 6 3 02/11/2008 28 6.00 28.27 143,600 5,080 Average 5,050 6 4 03/10/2008 56 Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 5% 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 ~tJ [g]~ ~ ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 PROJECT DATA Mix Design I.D.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Sunny Time Sampled: 07:28am Temperature - Air: 380F Truck No: 133 Air Content: 4.8% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.5 Batch time: 06:54am Concrete: 540F Ticket No: 18425 Unit Weight (pcf): NA Sample Location: 270' west from northwest corner of building 6 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. (TM/KW) Page 11 of 19 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.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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 (%): 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 Mix Design I.D.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Sunny Time Sampled: 08:35am Temperature - Air: 440F Truck No: 103 Air Content: 4.5% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.0 Batch time: 08:11am Concrete: 540F Ticket No: 18434 Unit Weight (pet): NA Sample Location: 330' west from northwest corner of building 6 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 7 1 01/21/2008 7 6.00 28.27 104,110 3,680 Type2 7 2 02/11/2008 28 5.97 27.99 135,600 4,840 Type2 7 3 02/11/2008 28 6.00 28.27 137,390 4,860 Type6 Average 4,850 7 4 03/10/2008 56 ~E3 ~[g KG] 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. (TM/KW) Page 13 of 19 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 n01 W Little York, Ste 600, Houston, TX n040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 310619 Project No.: 0713408 Date of Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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) 8 1 01/21/2008 7 6.00 28.27 109,680 3,880 8 2 02/11/2008 28 6.00 28.27 140,830 4,980 8 3 02/11/2008 28 6.00 28.27 128,290 4,540 Average 4,760 8 4 03/10/2008 56 Contractor: Duke Construction, LP Concrete Suoplier: Potter Concrete Plant: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" 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 ~EJ [!]Q] [ill] [] DO D Type 1 Type 2 Type 3 Type 4 Type 5 Mix Design I.D.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Sunny Time Sampled: 09:30am Temperature - Air: 440F Truck No: 126 Air Content: 4.6% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.5 Batch time: 08:55am Concrete: 540F Ticket No: 18443 Unit Weight (pcf): NA Sample Location: 420' west from northwest corner of building 6 Fracture Type Type2 Type6 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. (TM/KW) Page 15 of 19 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.: 310619 Project No.: 0713408 Date ot Service: 01/14/2008 Report Date: 02/12/2008 Project: Point West VI 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) (in2) (Ibs) (psi) 9 1 01/21/2008 7 6.00 28.27 97,060 3,430 9 2 02/11/2008 28 6.00 28.27 121,430 4,290 9 3 02/11/2008 28 6.00 28.27 128,680 4,550 Average 4,420 9 4 03/10/2008 56 Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 1 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 5% 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 ~~ ~[g [illj ~ DO D Type 1 Type 2 Type 3 Type 4 Type 5 PROJECT DATA Mix Design 1.0.: 7753PW6 Placement Date: 01/14/2008 Weather Conditions: Sunny Time Sampled: 10:30am Temperature - Air: 490F Truck No: 126 Air Content: 4.6% Overall Placement Location: Parking lot, paving, north side of building 6 Measured Slump (inches) 5.0 Batch time: 09:54am Concrete: 530F Ticket No: 18451 Unit Weight (pet): NA Sample Location: 460' west from northwest corner of building 6 Fracture Type Type2 Type6 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. (TM/KW) Page 17 of 19