IceVol
Structural
- Aug 3, 2009
- 9
A Contractor of mine poured the first 25 feet of a 3' dia 30' drilled pier foundation designed to support a steel lattice transmission structure before he realized the foundation was off by the correct drilling location by about a foot. Construction halted and the top 5' haven't been poured and the anchor bolts have not been set. The anchor bolts can be placed in the correct location within the rebar cage, but obviously the required clear cover to the anchor bolt is inadequate for loading.
My inclination is to demand that the foundation be dug up and reconstructed, but the contractor insist that forming up an additional foot around the correct anchor bolt location will be adequate. What sources can I quote considering the obvious cold joint will be exactly where the tension and compression failure cone will be? I don't doubt that a solution could be made without digging up the mistake I'm just having difficulty finding sources on construction joint in drilled piers.
I know that a drilled pier is just a continuously supported column and construction joints can occur at the intersection of beams and columns yet I imagine this is a different case where the cold joint is in the most undesirable and unplanned place. What source details the connection of emergency cold joints?
My inclination is to demand that the foundation be dug up and reconstructed, but the contractor insist that forming up an additional foot around the correct anchor bolt location will be adequate. What sources can I quote considering the obvious cold joint will be exactly where the tension and compression failure cone will be? I don't doubt that a solution could be made without digging up the mistake I'm just having difficulty finding sources on construction joint in drilled piers.
I know that a drilled pier is just a continuously supported column and construction joints can occur at the intersection of beams and columns yet I imagine this is a different case where the cold joint is in the most undesirable and unplanned place. What source details the connection of emergency cold joints?