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  1. GWSystems

    Earthquake Design

    Aggie - The tunnel is box shaped (similiar to a culvert) and the conical pile of rocks is loosly piled on top. There is nothing to fix it laterally other than friction. If I chose to do a RSA or THA, what would be the best way to include the pile of rocks in determining the mass matrix for...
  2. GWSystems

    Earthquake Design

    I am designing a RC square shaped tunnel. This structure will set on grade and have a conical pile of rocks piled on top of it. I have questions pertaining to EQ design of this structure maybe someone can help: The code I am using gives the "minimum required analysis procedures" that I am...
  3. GWSystems

    DYNAMIC ANALYSIS

    I run a complete time history analysis in STAAD all the time. Usually on large steel structures though. In your problem, you may need to actually model the piece of equipment using plates, beams, or solids. You can use beams with releases in appropriate places to simulate the behavior of...

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