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  1. FeSE

    Manhole riser design with holes

    With the FAA requirement for loading on structures to be 100k it seems that there needs to be research done. It seems very much that the precast industry should be obliged to obtain this research on this issue. Can I get support on that? If I can get a few people to support this then I will...
  2. FeSE

    Manhole riser design with holes

    Yes, round risers.
  3. FeSE

    Checkered Plate Deflection

    Is the check done with strength level loads? Could it be L/164 is a way to check deflection at strength level. e.g. 240/1.6=150
  4. FeSE

    Manhole riser design with holes

    It seems that there is a huge hole in the practice of design and supply of manhole riser sections that have holes in them. Granted, when there are no holes in a manhole riser, the math shows that the riser sections have plenty of strength. Now then what really happens inside a riser when we...
  5. FeSE

    TEDDS file sharing

    Is anyone aware of file sharing websites for TEDDS for word files? I am aware of SteelTools.org. Is anyone interested in setting up a TEDDS file sharing pool?
  6. FeSE

    Circular concrete beam

    thread507-249852 Just thought I'd leave eng-tip on this. To recap we're talking about designing circular concrete beams for flexure only. CRSI has tables that show phiMn (moment capacity)for a circular section. Unfortunately the tables don't have reinforcing on the low end. The tables are...
  7. FeSE

    More Art of Diagonal Bracing

    Have you looked at the Uniform Force Method in the AISC manual? (Steel Construction Manual) That will explain how to adjust your theoretical model and connection design if you don't want to connect at the beam column intersection. UFM will also address how you can attach to just the beam. In...
  8. FeSE

    ATFP window stuff

    thread507-268076 Note that there is a new UFC out for ATFP. Does anyone know how to interpret B-3.1.4.1 with respect to the tributary area increase factor? My only guess as to what this means is that the whole wall should be loaded with blast pressure just like wind. Meaning the trib...
  9. FeSE

    Appendix D

    Ok, I've found my cheese again. Handcalcs done in 10 minutes. It would still be nice to have a program. Open source freeware anyone? anyone? Bueller.
  10. FeSE

    Shear resistance with standard base plate

    Nutte & Miecz; Thank you for your excellent explanations. Now back to the real topic; LowLax; You hit the nail on the head. Do you remember the name of the seminar? Is it available online?
  11. FeSE

    Shear resistance with standard base plate

    Correct me if I'm wrong, but pretensioning will not reduce the breakout cone or required development length. As for codes, would you go to a doctor who would only treat you with procedures from a manual? No, we rely on doctors to use knowledge and reason.
  12. FeSE

    Shear resistance with standard base plate

    When a base plate sees more shear than available friction, what actually happens? Certaintly the anchors go into bending. After some deformation would it not be reasonable that a concrete wedge forms as shown in the following sketch? Wouldn't that in turn add to the friction available? Does...
  13. FeSE

    Appendix D

    Ha ha. Design tables are fine, but not fully parametric. And, OK, Appendix D is not that bad, but it requires a program. So, does anyone have an open source program to share?
  14. FeSE

    Free beam column spreadsheet for tube design shareware

    Yes, Mr Li has offered a spreadsheets for this and other stuff, but it is not free. Also, even after purchasing a license from him, it is not exactly open source. I believe our profession has been tunnel focused on profit for the next project. If we create open source design software it will...
  15. FeSE

    Commitee practices, code and our future

    Thanks for your feedback. I would enjoy involvement in committee work on steel design.
  16. FeSE

    Commitee practices, code and our future

    Are commitee members paid for their efforts? Should they? How much would this inflate the cost of our codes? Do the code commitees require a portion of the commitee to be practicing engineers? Should they? Would you rather photocopy or otherwise illegally copy our overly complicated codes...
  17. FeSE

    Design criteria for crusher housing..

    I've found that fatigue due to cyclic vibrations is the first hurdle on crushers, not impact. Have you looked at operating speed, natural frequency and resonance? As for impact, you can calculate anything, but with crushers the variables can be very difficult to quantify. ie max lump size...
  18. FeSE

    Appendix D

    Does anyone else view appendix D as a poor code? Let's take a poll; How many people use a simpler, or older anchor design routine? How many people actually use Appendix D?
  19. FeSE

    Design A connection

    How about scanning your drawings or a sketch. I would spend a lot more time thinking about this if you posted more details.
  20. FeSE

    Structural Modeling ASCE/SEI 7-05 12.7.3

    Do you really need to follow ASCE? A single family residence is typically covered by a residential code. Is your structure a typical stick built house? Do you have masonry, steel bracing?

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