Jump to content

Leaderboard

Popular Content

Showing content with the highest reputation on 08/04/15 in all areas

  1. You can google Taylor Devices to get the working link: http://www.taylordevices.com/ Thanks.
    1 point
  2. I dont know if they are called integration nodes, but sure they are called "Gauss Points". these are the points in FEA where stresses are or displacements are calculated and are then interpolated or extrapolated to nodes or within the areas. Stress at nodes will be extrapolated from Gauss points. But at nodes, there will be many values different values from each corner of adjacent area. You should not average results at this intersection which will help you understanding the quality of mesh. Its an art where and what to check in FEA. You should consult FEA book by Robert D. Cook. Its very easy and well written plus the author is well known in this field.
    1 point
  3. http://docs.csiamerica.com/help-files/etabs/Menus/Assign/Frame/Insertion_Point.htm There is a set of pre-defined locations within the section, called cardinal points You can further offset the cardinal point from the joint by specifying joint offsets. The joint offsets together with the cardinal point make up the insertion point assignment. The total offset from the joint to the centroid is given as the sum of the joint offset plus the distance from the cardinal point to the centroid Hope it helps..
    1 point
  4. Thats an interesting document although I already read it but I think I am not gonna scale the records as I am not studying or doing a comparison between code based equivalent static and actual time history records. Neither I am designing the structure for seismic forces. I am studying the effects of long-period components in time history records on tall buildings. So I should be concerned with that. But about the damping ratio, yes I have written the company in second link you mentioned above (First one is not working). Still I have not got a reply from any firm/expert about this. I just need a recommended rough "FEEL" value that can be used for my study.
    1 point
  5. Since the length of basement wall would likely to be much longer when compared to a conventional shear wall, lateral shear resisted / unit foot of basement wall would not be significant. Critical case for basement wall (generally speaking) should be lateral load due to earth + any increase in that lateral load due to earthquake. This load would be perpendicular to wall. Also, have a look at the following topic (there are 5 threads) as you may find them interesting: http://www.sepakistan.com/tags/forums/Highrise%2Bwith%2Bbasements/ Thanks.
    1 point
  6. Following are the relevant ASCE standards: 1. Seismic Evaluation of Existing Buildings (ASCE/SEI 31-03) (http://ascelibrary.org/doi/book/10.1061/9780784406700 ) 2. Seismic Rehabilitation of Existing Buildings (ASCE/SEI 41-06) (http://ascelibrary.org/doi/book/10.1061/9780784408841) 3. Seismic Evaluation and Retrofit of Existing Buildings (ASCE/SEI 41-13) (http://ascelibrary.org/doi/book/10.1061/9780784412855 ) Whereas the following document is a pre-standard to ASCE 31, and may be useful in case of non-availability of above ASCE standards: Fema-310 Handbook for the Seismic Evaluation of Buildings, 1998 (https://www.wbdg.org/ccb/DHS/ARCHIVES/fema310.pdf) Regards.
    1 point
  7. Everything that you need to know. https://www.fema.gov/earthquake-publications-building-codes-and-seismic-rehabilitation + More specific on the topic http://www.fema.gov/media-library-data/20130726-1556-20490-0462/fema454_chapter8.pdf Thanks.
    1 point
  8. The way you have written about your assignment, it can be done in different ways. One way has been mentioned by Umar, which involves calculation of strength of beam. There could be another way, the easier one. Perform linear elastic F.E analysis on your deep beam, and then compare the results- which could be deflection, bending strains and shear strains- with Themoshenko equations that take into account bending , as well as, shear deformations. You can find these equations in "Timoshenko S.P. and Gere J.M., (1971), Mechanics of materials, Van Nostrand Reinhold Company", or "Timoshenko S.P., (1957), Strength of Materials – Part I, D. Van Nostrand Co. Inc., London, England".
    1 point
This leaderboard is set to Edmonton/GMT-06:00
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Guidelines.