Trinity Contractors, Inc 3/1/2017

I1 6-19.3(6)F Use of Access Tubes for TIP Testing Under the Thermal Probe Method 2 The Contractor may use access tubes for TIP testing under the thermal probe method. 1 3 Access tubes shall be cared for in accordance with Section 6-19.3(6)C. Prior to TIP 4 testing under the thermal probe method, the water in each tube shall be removed, 5 collected, and stored in an insulated container. The access tube shall be blown dry and I 6 7 swabbed to remove residual water. After TIP testing, the collected and stored tube water shall be introduced back into the access tube. New potable water may be used, 8 provided the water temperature is not more than 10°F cooler than the average concrete I 9 temperature measured by the probe. 10 11 6-19.3(6)A Shafts Requiring CSL Access Tubes I 12 This section, including title, is revised to read: 13 14 6-19.3(6)A Shafts Requiring Access Tubes I 15 The Contractor shall furnish and install access tubes in all shafts receiving CSL testing 16 or the thermal probe method of TIP testing, except as otherwise noted in Section 6- 17 19.3(1)B1. 18 I 19 6-19.3(6)B Orientation and Assembly of the CSL Access Tubes 20 This section's title is revised to read: 21 1 22 6-19.3(6)B Orientation and Assembly of the Access Tubes 23 24 6-19.3(6)C Care for CSL Access Tubes from Erection through CSL Testing 25 This section's title is revised to read: 26 27 6-19.3(6)C Care for Access Tubes from Erection Through Nondestructive QA I 28 Testing 29 30 The second sentence is revised to read: I 31 32 The Contractor shall keep all of a shaft's access tubes full of water through the 33 completion of nondestructive QA testing of that shaft. III 34 35 6-19.3(7)1 Requirements for Placing Concrete Above the Top of Shaft 36 This section is revised to read: 37 I38 Concrete shall not be placed above the top of shaft (for column splice zones, columns, 39 footings, or shaft caps) until the Contractor receives the Engineer's acceptance of 40 nondestructive QA testing, if performed at that shaft, and acceptance of the shaft. I 41 42 6-19.3(9) Nondestructive Testing of Shafts (Crosshole Sonic Log (CSL) 43 Testing) I 44 This section, including title, is revised to read: 45 46 6-19.3(9) Nondestructive QA Testing of Shafts I 47 48 The Contractor shall provide nondestructive QA testing and analysis on all shafts with access tubes or thermal wires and TAPs facilitating the testing (See Section 6- 49 19.3(1)B). The testing and analysis shall be performed by the testing organizations I 50 identified by the Contractor's submittal in accordance with Section 6-19.3(2)D. 51 I I AMENDMENTS TO THE 2016 STANDARD SPECIFICATIONS BOOK Revised: 8/1/16