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  1. The geotechnical engineer shall keep a record at the job site of all test loads and total anchor movement, and report their accuracy.
  2. If a tie-back anchor initially fails the testing requirements, the anchor shall be permitted to be regrouted and retested. If the anchor continues to fail, the followings steps shall be taken:
    1. The contractor shall determine the cause of failure: (variations of the soil conditions, installation methods, materials, etc.).
    2. The contractor shall propose a solution to remedy the problem. The proposed solution will need to be reviewed and approved by geotechnical engineer, shoring design engineer and the building official.
  3. After a satisfactory test, each anchor shall be locked off in accordance with PTI Recommendations for Prestressed Rock and Soil Anchors Section 8.4.
  4. The shoring design engineer shall specify design loads for each anchor.

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1812.4.3 Soils and Foundations, Testing of Tie-Back Anchors
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