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Recent content by DCHAZEN

  1. DCHAZEN

    ACI 117 tolerances

    I am dealing with a difficult concrete subcontractor. They poured a 30" tall retaining wall and the quality is poor. The wall is only approximately 40' long and 30" tall. In spots the wall is standing 1-1/2" out of plumb. The wall is also 3/4" out of true at each end of a 30" straight edge. The...
  2. DCHAZEN

    Friction pile with steel casing installation problem

    Thanks for all of the help. I will right all of this up and see what the geotech thinks. One more question, since the only dumb question is one not asked. My understanding is that this is a friction pile, but most of the reading I have done sounds like most friction piles are driven. In your...
  3. DCHAZEN

    Friction pile with steel casing installation problem

    I dug into the bridge and geotech's structual calculations. They are using 1 KSF as the allowable skin friction. And 4 KSF for the allowable end bearing. Does anybody know if there is a standard of values for skin friction with differnt types of soils, or does the engineer calculate the skin...
  4. DCHAZEN

    Friction pile with steel casing installation problem

    I do not know why they chose not to use spread footings- unfortunately it is to late in the game to change the design that much. The cassings are purchased, fabricated, coated and ready for mobilization to the jobsite, the drill rig is here because it was mobilized for other cassions on the job...
  5. DCHAZEN

    Friction pile with steel casing installation problem

    BACKGROUND: We are in the early stages of construction of a design build power plant in Southern California. Part of the project includes a small bridge with drilled caissons supporting the abutments. In the area where the caissons are to be installed the geotechnical report shows that augers...

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