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  • Users: tdawgui
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  1. tdawgui

    Loading for Helipad on Building

    Does anyone know anything regarding this or any references which can guide me as to what I should anticipate for loading from a helipad on a building. I know I should account for the weight of the helicopter, but also I imagine there should be both upward and downward wind forces plus some...
  2. tdawgui

    Perforated Shearwalls per IBC section 2305.3.7.2

    Can someone please help clear up some of the grey areas I have about this section??? 1. "The maximum opening height shall be taken as the maximum opening clear height." Say I have a 5' window that is 3' off the sill plate. I first took this to mean that the opening height is from the top of...
  3. tdawgui

    NDS Diaphragm Factor, Cdi

    I was going through all the factors that you can apply to allowable lateral design values for single shear connections and noticed the Diaphragm Factor, Cdi. I've never used this factor before and thought I'd take a look into it, but now I'm slightly confused. Table 10.3.1 on page 58 of the...
  4. tdawgui

    Embedment of Piles and Frost Questions

    This is a lot to read and may be slightly confusing... I apologize beforehand, but thank you for any help you may provide. I'm trying to design a chart giving required embedments for 1.66" outside diameter piles supporting light weight residential tramways in Michigan. I want to calculate the...
  5. tdawgui

    Load Spreading in Wood Diaphragm

    I'm doing a project where I've got a diaphragm as shown in the image... I am wondering if anyone knows of any study to find a spread angle for loading in wood sheathed diaphragm. My diaphragm is 19/32" shtg with 10d nails @ 6" o.c. edge, 12" o.c. field. My thoughts are that the diaphragm...
  6. tdawgui

    Steel Column to Concrete Bond Strength?

    I have a 1.25" sched 40 pipe embedded into the ground 6'-0" and a 12" diameter concrete collar poured around it at the surface (12" deep)... I'm trying to figure out what the bond strength is between the steel pipe and the concrete for vertical force resistance. My concern is that the...

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