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Recent content by joengineering

  1. joengineering

    New opening in cmu wall

    Ah okay, I am not so familiar with FRP. This is actually a URM wall, my thinking was to have a brace frame. Collect the seismic load with a steel ledger, but like you said maybe the URM fails if I do not do this correctly. I do not know if should have some steel X bracing anchors to the URM to...
  2. joengineering

    New opening in cmu wall

    How do you calc the capacity of something like the FRP with the URM, or is it something you just call out?
  3. joengineering

    URM Wall

    I agree, but then again what would you try to use?
  4. joengineering

    URM Wall

    Moment frame would be the same thing right? Any recommendations?
  5. joengineering

    URM Wall

    I checked the existing wall using the California existing building code section A112, it did not work. If i would introduce a brace frame, this would have to be a special brace frame because it is seismic category D, or since its an existing building, can I use an ordinary brace frame? Also, I...
  6. joengineering

    URM Wall

    Hello, We are creating an opening on a wall. Alterations no the wall are greater than 10%. What are some retrofit options. This building is URM with wood framing. Two story building, the alterations (openings) are going to be done at the first floor. it is about a 60'x80' building. JO
  7. joengineering

    New opening in cmu wall

    If the columns are anchored to the wall, they will act composite correct? how do i approach that ?
  8. joengineering

    New opening in cmu wall

    So for lateral, I have to check that the wall opening doesnt affect the capacity of the wall, I have read something about that it cannot affect the DCR for more than 10%. Also check gravity and out of plane? This will be taken by the steel frame? Also, what are wind columns mentioned above? JO
  9. joengineering

    New opening in cmu wall

    Does any one have any details? JO
  10. joengineering

    New opening in cmu wall

    Excuse my lack of knowledge, but what is a steel tube wind column? JO
  11. joengineering

    New opening in cmu wall

    It is a door and a window opening 9' by 8' or so high
  12. joengineering

    New opening in cmu wall

    2 story building, each story is 12' high, the opening at second floor are 9' and 3', 8 ft high. The total length will of the wall is about 30'. The channel above the opening is to take care of the gravity loads correct, essentially a lintel? is that all i need? how about to analyze this wall...
  13. joengineering

    New opening in cmu wall

    Hello all, If they are planning to make an opening in a cmu wall what is the retrofit design approach for this? Can anyone give me an idea on how I should approach this design? I am quite lost. JO
  14. joengineering

    W GIrder to HSS beam connection

    Hello, Please see attachment. This is the best idea for the connection. It does have a big eccentricity but the connection works. But also, is it possible to cope an HSS beam like usually done for W beams. Thank...
  15. joengineering

    Offset of drags to shear walls

    That sketch and your responses clarify things. Thank you.
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