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  1. captb

    UBC 1970 or 1973 Wood Design Values

    Does anyone have either the UBC 1970 or 1973 and can check what the Fb values are for a Douglas Fir, single member, beam and stringer. Thanks
  2. captb

    OMF in Seismic Cat D AISC 341

    I understand that we must meet the detailing requirements of AISC 341 regardless, but do we have to design using it when the R=3?
  3. captb

    OMF in Seismic Cat D AISC 341

    Hi, I have the situation of designing an OMF in a seismic category D. The OMF will only be supporting a DL=15psf and a reduceable RLL=20psf. I would like to avoid designing per AISC 341 so I would like to design as a "Steel system no specifically detailed for seismic resistance" with an R=3. The...
  4. captb

    UBC 1970 Seismic Design

    Does anyone have access to UBC 1970 or older. Im wondering if the seismic design has changed from 1970 to 1985. If possible i would like to verify that the way of determining the seismic forces in 1970 is V=ZIKCSW. Thanks!
  5. captb

    Different Deflection when adding a node.

    Problem solved. Thanks JoshPlum!
  6. captb

    Different Deflection when adding a node.

    I was trying to figure out what was wrong with my model so i tried modelling a simply supported beam and i got the same results. I modeled a simply supported I-beam with uniformly distributed load and I am getting the exact deflection as we would expect, 5wl^4/384EI. Now when I either add a 1 or...
  7. captb

    What is correct way of modeling Partition Loads?

    Just wanted to know how you guys apply your partition loads. The way i did it was apply a 15psf "Super Dead" Load (Im only looking at ASD for this project so the load applied to dead or live wouldnt matter) and when i specify mass source, i give that load a factor of 0.67 to get it to the 10psf...
  8. captb

    Self weight/Dead Load applying loads laterally

    Thank you so much. Didnt realize it would be something so simple. I used point loads early on before i had the seismic info for simple checks, and i thought i deleted them. i guess i forgot. Thanks again.
  9. captb

    Self weight/Dead Load applying loads laterally

    Attached is the .edb file. let me know if you need any other file. and all the columns and walls are pin supported at the base. Thanks slickdeals.http://files.engineering.com/getfile.aspx?folder=6f95516e-f4e6-4b9a-9b88-a5839461a665&file=etabs_model.EDB
  10. captb

    Self weight/Dead Load applying loads laterally

    Hi all, I'm just starting to learn etabs but i am having an irregular problem that i think has to do with wrong settings or preferences but i cant seem to find anything wrong. First off, the building is a 4 story concrete building with gravity columns and interior shear walls. The model runs...

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