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  1. F

    Reduced Wind Load for Wind and Ice Combination

    This thread from a few years ago talks a bit about this topic starting on post #7. https://www.eng-tips.com/threads/canadian-ice-and-wind-on-ice-procedure.479942/
  2. F

    Load Wind on a structure

    ASCE 7 §29.5 Design Wind Loads - Other Structures solid on all 4 sides - open a the top - I would think the closest approximation would be a chimney. Cf values from Figure 29.5-1 in ASCE 7-10. Don't have the 7-16 book at home so that figure number may be different. Could also be looked at...
  3. F

    Wooden Fence - Residential

    I usually assume No. 2 if I don't know the specs
  4. F

    Wooden Fence - Residential

    I've got a fence post and post footing design guide at https://fencedesign.com that simplifies the process quite a bit for non-engineers, or engineers that don't have a wind background. I don't have Douglas Fir strength tables, but I can add them if that is an option in some localities. I was...
  5. F

    Conflicting embedded post provisions in IBC?

    They are for two different types of foundation elements. ASABE EP486 is for shallow post footings - large hole, spread footing at the bottom of the hole, post resting on or attached to footing, and the hole backfilled and compacted around the post. Big signs, pole barns, etc.. Can handle large...
  6. F

    Calculation of concrete foundation for steel fence

    That is an older sketch with variable names that never got updated to match the current design guide. It's showing S as the post spacing and L as the post height and no gap at the bottom of the fencing. For flexible fencing like chain link, if the post spacing is much smaller than the post...
  7. F

    Calculation of concrete foundation for steel fence

    I've re-written the text to make the differences clearer between the IBC and the design guide procedures.
  8. F

    Calculation of concrete foundation for steel fence

    IBC is not considering a fence post, just any post resisting any type of load and they happened to use h for the force application height to get the moment that must be resisted by the footing. For a fence post, applying the force at the mid-height provides the equivalent moment at the base as...
  9. F

    Calculation of concrete foundation for steel fence

    IBC footing design is not worded very clearly. I've got about 9 pages explaining the IBC footing design proceedure at https://fencedesign.com/footing-design/

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