We are working on the project where the contractor is attempting to install the auger cast pile test pile and is struggling. Today, the mix seemed to pump fine, but the grout set up very fast and the rebar only went down 2/3 of the full length. Can anyone help me help him with a suggested mix...
Considering a project where there will be a 55' deep excavation. The top 13' is fill material (125 pcf) that can be laid back at a 1.5:1 slope. The lower 42' will be a vertical face cut by blasting the rock and excavating in lifts. The general shape of the excavation is square. Recovery on...
Does anyone know the basic design methodology for auger cast piles? Is it strictly an end bearing calculation, skin friction, or a combination of the two? To determine end bearing capacity, would you use the Neely formula of ultimate unit end bearing capacity = 1.9 N where N is SPT value of...
I have a hole cored through a 4,000 psi concrete wall at 30 degrees from horizontal. A grouted anchor has been installed through the wall and will be stressed to 100 kips maximum. The cored hole is 5" in diameter leaving a 6"(+/-) hole along the vertical face of the wall. The...
