AugustTIEDOWNS very similar to tiebacks, can be installed in virtually any ground condition using rotary, percussion or down-the-hole hammer tooling. The critical design elements are the capacity (Kips), length of unbonded zone, corrosion protection (Class I or II or none), grout cover (usually 1/2"), and testing specs. If the project is a performance spec (meaning the contractor takes responsibility for the performance), the contractor will design those elements related to performance (i.e. bonding length, diameter and other variables), and provide a shop drawing.

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