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  1. 1835Eng

    Does a fully enclosed PEMB meet the ASCE 7 definition of "Simple Diaphragm Building"?

    Thanks all for the input. Haynewp's post above is the confirmation I was seeking.
  2. 1835Eng

    Does a fully enclosed PEMB meet the ASCE 7 definition of "Simple Diaphragm Building"?

    Would a fully-enclosed Pre-Engineered Metal Building (PEMB), with continuous wall sheathing and roof, meet the ASCE 7 definition of "Simple Diaphragm Building"? ASCE 7-16 definition is as follows: "BUILDING, SIMPLE DIAPHRAGM: A building in which both windward and leeward wind loads are...
  3. 1835Eng

    Mat foundation on expansive soils - preferred software?

    With several feet of select fill replacing the near-surface expansive soil, the geotech is estimating heave values of 1". This is within the parameters of an appropriately stiffened mat foundation, and is the construction method preferred by the owner.
  4. 1835Eng

    MWFRS loads on gable end of open building, gamma = 90 deg

    I'm trying to find a design value for MWFRS wind load applied to the gable end of an open (each wall greater than 80% open) PEMB structure. ASCE 7-10 Figure 27.4-7 gives a C_sub_N value for "contributions from top and bottom surfaces" but what about the side surfaces? The Guide to the Wind...
  5. 1835Eng

    Mat foundation on expansive soils - preferred software?

    In a perfect world, I would enter the active soil parameters from the geotech report (edge moisture distance, heave, etc.) and the program would perform the calcs, similar to a spreadsheet or design program based on the PTI procedure. I ran several STAAD Foundation Advanced models considering...
  6. 1835Eng

    Mat foundation on expansive soils - preferred software?

    I considered the above approach for modelling the center lift ("edge drop") condition, whereby I would apply the soil springs to the mat, inset by the edge moisture variation distance, so that the perimeter of the foundation cantilevered beyond the soil support area. Haven't tried it yet, but...
  7. 1835Eng

    Mat foundation on expansive soils - preferred software?

    I'm trying to determine if any commonly available FEM foundation software design packages such as RAM Concept, STAAD Foundation (or other) are capable of modelling large mat foundations subject to edge lift and center lift conditions? I have access to both RAM and STAAD here at the office, but...

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