Trinity Contractors, Inc 3/1/2017

1 1 2 6-19.3(2) Shaft Construction Submittal I3 This section is revised to read: 4 5 The shaft construction submittal shall be comprised of the following four components: I 6 construction experience; shaft installation narrative; shaft slurry technical assistance; 7 and nonctestructive-QA testing personnel. The submittals shall be Type 2 Working 8 Drawings, except the shaft slurry technical assistance and nondestructive QA testing I 9 personnel submittals shall be Type 1. 10 11 This section is supplemented with the following new subsection: I 12 13 6-19.3(2)D Nondestructive QA Testing Organization and Personnel 14 The Contractor shall submit the names of the testing organizations, and the names of I 15 16 the personnel who will conduct nondestructive QA testing of shafts. The submittal shall include documentation that the qualifications specified below are satisfied. For TIP 17 testing, the testing organization is the group that performs the data analysis and 18 produces the final report. The testing organizations and the testing personnel shall meet I19 the following minimum qualifications: 20 21 1. The testing organization shall have performed nondestructive tests on a I 22 minimum of three deep foundation projects in the last two years. 23 24 2. Personnel conducting the tests for the testing organization shall have a 25 minimum of one year experience in nondestructive testing and interpretation. 26 27 3. The experience requirements for the organization and personnel shall be I 28 consistent with the testing methods the Contractor has selected for 29 nondestructive testing of shafts. 30 I 31 4. Personnel preparing test reports shall be a Professional Engineers, licensed 32 under Title 18 RCW, State of Washington, and in accordance with WAC 196- 33 23-020. 34 I35 6-19.3(3) Shaft Excavation 36 The second paragraph is revised to read: 37 1 38 Shaft excavation shall not be started until the Contractor has received the Engineer 39 acceptance for the reinforcing steel centralizers required when the casing is to be pulled 40 during concrete placement. I 41 42 This section is supplemented with the following: 43 I 44 Except as otherwise noted, the Contractor shall not commence subsequent shaft 45 excavations until receiving the Engineer's acceptance of the first shaft, based on the 46 results and analysis of the nondestructive testing for the first shaft. The Contractor may I 47 commence subsequent shaft excavations prior to receiving the Engineer's acceptance 48 of the first shaft, provided the following condition is satisfied: 49 50 The Engineer permits continuing with shaft construction based on the Engineer's I51 observations of the construction of the first shaft, including, but not limited to, 52 conformance to the shaft installation narrative in accordance with Section 6- I I AMENDMENTS TO THE 2016 STANDARD SPECIFICATIONS BOOK Revised: 8/1/16