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  1. eberger

    DAM ENGINEERING-RISA FOUNDATION

    thanks, but how do you model the 3D concrete structure? Retaining walls are over simplified and doesn't allow for the unique geometry that I need to recreate.
  2. eberger

    DAM ENGINEERING-RISA FOUNDATION

    Has Anyone setup RISA 3D/foundation to do a stability analysis on a hydraulic structure such as a dam that requires USACE load combination? Or some other analysis software?
  3. eberger

    API 650 5.12.2 uplift per anchor

    using API 650 ch5, net uplift=128kips uplift per bolt=16k I have 8 equally spaced anchors. If I assume 2 of the anchors are located perpendicular to the load relative to the tank, then there will be no force acting on them. of the remaining (6) anchors, three of them will be in compression...
  4. eberger

    API 650 5.12.2 uplift per anchor

    "If pressure is low and moment is high", which pressure are you referring to? Couldn't I just treat the tank as a cantilevered beam/pipe with a moment, and use the moment calculated from ANNEX E to calculate the max tension at the fixed side?
  5. eberger

    API 650 5.12.2 uplift per anchor

    As per API 650 clause 5.12 tank anchorage, table 5-21a shows uplift load calculation formula including seismic case as U=(4xMrw/D)-W2(1-0.4Av). The load per anchor equation (tb=U/N) appears to assume that all anchors will share the uplift load equally. However, if I have a cylindrical tank with...

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