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  1. fattdad

    Miami Beach, Champlain Towers South apartment building collapse

    wonder if the neighboring construction included dewatering? f-d ípapß gordo ainÆt no madre flaca!
  2. fattdad

    BigH Update

    great update! Yes, part of your trip looked great! f-d ípapß gordo ainÆt no madre flaca!
  3. fattdad

    Water Content of a soil sample

    run Atterberg limits. Replicate the LL on an oven-dried sample. Gauge if the LL was reduced by more than 25% (i.e., <75% of its original value). May be an OL or an OH? Data may be real. These soils are highly prone to long term secondary compression - i.e., decades and decades! f-d ípapß...
  4. fattdad

    Fully Softened Shear Strength

    just run a normally consolidated DDS with the sample hydrated to the liquid limit. Peak is FSS, residual is residual. Not to take away from Tim's correlations; however. But, if you have a lab, run the test and record the value. I don't believe you will get there with a CU-bar or a...
  5. fattdad

    Miami Beach, Champlain Towers South apartment building collapse

    ongoing settlement over decades certainly seems related to the problem. Seems a, "pop-type" failure, for sure. Live load considerations? Shoreline rebar deterioration and or inadequate cover from the onset. Such a catastrophe! f-d ípapß gordo ainÆt no madre flaca!
  6. fattdad

    Poor Drainage - Hard Clays to Soft Clays

    100 percent of all design strength is obtained on saturated soils. It's a fallacy to say that when soil gets wet it loses design strength. Critical void ratio is a factor. f-d ípapß gordo ainÆt no madre flaca!
  7. fattdad

    Settlement - Conventional/Log (Cr, Cc, eo) vs. Linear (mv) Pressure Scales

    I think I'd use modulus for residual soils. There are a few exceptions, like the epi-Karst elastic silts. Then I'd use Cc, Cr, Cv, Pp and Po. f-d ípapß gordo ainÆt no madre flaca!
  8. fattdad

    How to design a slope to fail?

    build an MSE (mechanically stabilized earth) retaining wall. Install a perforated pipe in the reinforced zone. Provide no wall drainage. Use clayey sand backfill and poor backfill. Instrument it. Charge the perforated pipe with water. Watch what happens. f-d ípapß gordo ainÆt no madre flaca!
  9. fattdad

    News from Italy

    autumn leaves is on the same list as, "On Green Dolphin Street!" Love those tunes! f-d ípapß gordo ainÆt no madre flaca!
  10. fattdad

    Soil in drained vs undrained condition

    somewhere behind the scene is the subject of critical void ratio. I'm not sure I can easily contribute much more as this is a complicated topic that's seemingly an easy question. f-d ípapß gordo ainÆt no madre flaca!
  11. fattdad

    Jazz Appreciation Month - April 2021

    Yes! Eric Kloss is just great! I checked out Robert Glasper. He's doing something! f-d ípapß gordo ainÆt no madre flaca!
  12. fattdad

    Does the subgrade modulus reaction Ks value differentiate between Raft and Raft-on-piles???

    there is no subgrade modulus for a pile supported slab. f-d ípapß gordo ainÆt no madre flaca!
  13. fattdad

    Jazz Appreciation Month - April 2021

    you listen to, "Acid Jazz?" I kind of enjoy that subset too! Yesterday, I had Brooklyn Funk Essentials on the audio and wondered. . . Brooklyn Recycles was the tune. You may like it? Google it on YouTube to get an idea of that group. I also like Karl Denson and his various groups. I think...
  14. fattdad

    Construction a five stories building on Saturated Sand Soil

    are you above or below the critical void ratio? f-d ípapß gordo ainÆt no madre flaca!
  15. fattdad

    Controlled fill QC

    Hi Azza, Yes, you're example is my approach. The shift is along the Line of Optimums, which is how you drew it. There was a provisional ASTM on this topic. My former boss, Steven Poulous drafted it. He was a founder of a US firm, GEI. f-d ípapß gordo ainÆt no madre flaca!
  16. fattdad

    Jazz Appreciation Month - April 2021

    When we going to see Monk? Sure, Coltrane and Davis get big press, but Monk? So great! Thinking all the CTI jazz is too produced for your tastes, eh? I really got into those albums, back in the early '70s. Hubbard, Turrentine, Benson, etc. You are calling up names I've never heard of, but...
  17. fattdad

    Ground Engineering Correlations

    DM 7.1 has all sorts of correlations. Lade and Lee also published on correlations. CGPR (Virginia Tech) has correlations to SPT. Paul Mayne, correlations to cone penetrometer. There are correlations to permeability, based on grain size. There are water content correlations to secondary...
  18. fattdad

    Controlled fill QC

    a lab proctor is accurate for that sample only. Small changes in clay content, grain-size, etc. can affect the ultimate MDD. If you take a sample from the field and run one point on the field sample, you can walk that proctor point onto your lab curve and see if it falls reasonably onto that...
  19. fattdad

    Controlled fill QC

    I'm in complete agreement with BigH. I have also worked in non-US countries and know that what we do as customary is not so much in other places. f-d ípapß gordo ainÆt no madre flaca!
  20. fattdad

    Controlled fill QC

    Regarding the initial inquiry: Nothing wrong with sand cone data. I don't like 0.5m lifts; however. A watchful eye is important. During a work effort, they will spread and fill various areas - perhaps simultaneously. Each of these work areas warrant testing, as these work areas are unique...

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