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  1. Xcenterline

    Soil Classification E Footing Ties

    Had another idea... the maximum column load is only about 60 kips (factored). The resultant lateral design load for any column is under 6 kips as a result. Considering this load is quite small, the alternate idea would be to design similar to a pre-engineered metal building foundation in the...
  2. Xcenterline

    Soil Classification E Footing Ties

    Need some advice. I have a single story all steel structure (OCBF S-R system) on Soil Classification E. The foundation design used elsewhere (in better soils!) employs simple shallow spread footings with a mono-pour slab above (thickened edges around the perimeter. Now, with Soil...
  3. Xcenterline

    Drilled underreamed piers with eccentric loads

    Can anyone point me in the direction of a good resource for checking drilled, underreamed piers subjected to heavy vertical gravity loads that are eccentric to the centerline of the piers? (no lateral loads... just eccentric vertical loads). The piers are not too deep, 12 ft to 16 ft range...
  4. Xcenterline

    Expansive Soils

    Thanks TX. This site is great. I have searched here before for tips. Glad to be "on board" now (this is my first thread). So, I thought I would keep this thread going to share my experience for future people who visit this thread. Got my hands on a bunch of projects done by the same client...
  5. Xcenterline

    Expansive Soils

    Thanks JAE. I came across the plank soil retaining solution today actually. Makes sense. This site is actually in south Texas! I talked with to geotech today and supposedly he is very experienced overall and with the local area. He was very confident in the approach he recommended... that...
  6. Xcenterline

    Expansive Soils

    Thanks everyone. I appreciate the feedback and agree. My first order of business is a documented phone call. The client has used this approach before, providing soil retaining boards to avoid slab collapse due to use of voids under foundation structure. I, personally, am not in favor of this...
  7. Xcenterline

    Expansive Soils

    I forgot to add that the exterior walls are tilt-panel and will likely be tied to the slab. The remainder of the interior slab would be free-floating. Also, there is language in the report about replacing the upper 1 to 1.5 feet of soil with appropriate fill. Even if this helps mitigate some...
  8. Xcenterline

    Expansive Soils

    I have a single-story commercial project that is on expansive soils. Heavy exterior walls but the interior supports are relatively lightly loaded. Recommendation from the geotechnical engineer is for under-reamed piers. No problem here. Recommendation for the slab though is just "slab on...

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