1705.8.1 Prestressed rock and soil anchors.
BC § 1705.8.1
The installation and testing of permanent prestressed rock and soil anchors shall be subject to special inspections. A special inspector shall be present during the installation of each anchor, including all drilling, grouting, tendon splicing (including corrosion protection) and placement, and installation of any accessories such as trumpets and bearing plates. The special inspector shall also be present for all required load testing and shall create a report containing a log for each element installed and for each load test performed. The special inspection agency shall submit to the commissioner records of the installation of each rock anchor, and where testing is required, the special inspection agency shall also submit records of the testing. The special inspection agency shall submit to the commissioner records of the installation and testing of each anchor. Table 1705.8.1Required Special Inspections of Prestressed Soil and Rock Anchors InstallationContinuousSpecial InspectionPeriodicSpecial InspectionInstallationContinuousSpecial InspectionPeriodicSpecial Inspection1. Special inspection of Casing Installation. Special inspector shall observe casing installation and confirm that anchors are installed through a fully cased borehole or installed through stable rock in an open hole drill hole.X—2. Special inspection of Anchor Materials. Special inspector shall confirm that the materials used in prestressed rock and soil anchors conform Section 1815.3 and approved construction documents. Inspector shall confirm that bar tendons conform to ASTM A 722 and that strand tendons conform to ASTM A 416 or A 882.X—3. Special inspection of Anchor Installation. Special inspector shall confirm the preparation and installation of each anchor, including placement, type, size and location of anchors, accessories, corrosion protection and grout conforms to PTI DC35.1-4 and the approved construction documents.X—4. Special inspection of Grout. At the time of grout placement, special inspector shall prepare 3" diameter grout cylinders at the intervals specified in Section 1812.1.1.2.1. Cylinders shall be prepared in accordance with ASTM C 31/C 31M.X—5. Special inspection of Grout. At the time of grout placement, special inspector shall determine the specific gravity of grout in accordance with American Petroleum Institute (API) Recommended Practice 13B-1 or in accordance with ASTM C 138.X—6. Special inspection of Grout. The compressive strength of grout cylinders shall be verified using 3" diameter cylinders tested in accordance with ASTM C 39 and Section 1812.1.1.2.2.X—7. Special inspection of Load Test. The special inspector shall observe load testing of each anchor and confirm that the test is accordance with PTI DC35.1-14 (Sections 8.1 - 8.9) and Section 1815.5. Inspector shall confirm that testing lock-off, and test loads comply with approved construction documents and PTI DC35.1-14 (Sections 8.1 - 8.9).X—
