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  1. #1
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    New Board vs Wind

    Just talked to a couple guys working on the new board and they said two things

    1. Should be done by late July-early August

    2. It will be able to withstand a 90mph wind/gust for up to 3 seconds

    Also he said the bolts they were putting in were 85 lbs and 5 feet long. Blew my mind


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    Re: New Board vs Wind

    So with our luck, there will be a 93 mph wind gust for 4 seconds in late August?



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    Re: New Board vs Wind

    Quote Originally Posted by CP44 View Post
    Just talked to a couple guys working on the new board and they said two things

    1. Should be done by late July-early August

    2. It will be able to withstand a 90mph wind/gust for up to 3 seconds

    Also he said the bolts they were putting in were 85 lbs and 5 feet long. Blew my mind
    Uhh, am I the only one that remembers we've had straight line winds blow through central Iowa in the past 2-3 years around this speed?


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    Re: New Board vs Wind

    Quote Originally Posted by The_Architect View Post
    Uhh, am I the only one that remembers we've had straight line winds blow through central Iowa in the past 2-3 years around this speed?
    I asked them this same question. They said that it is almost impossible to have a gust that high for that long. TIFWIW


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    Re: New Board vs Wind

    Seems risky for a higher tornado probability area, but I guess if the stadium gets straight up blasted by a tornado we have other things to worry about...



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    Re: New Board vs Wind

    I bet we have insurance against wind damage...cheaper than building for hurricane winds.


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    Re: New Board vs Wind

    Iowa State is self insured. So, they do not have insurance for wind.


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    Re: New Board vs Wind

    70mph gusts (1-2 sec) are common, but 90mph sustained for 3 seconds pretty much needs a tornado to come through to get that.



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    Re: New Board vs Wind

    Quote Originally Posted by isuno1fan View Post
    70mph gusts (1-2 sec) are common, but 90mph sustained for 3 seconds pretty much needs a tornado to come through to get that.
    Or a cyclone perhaps?



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    Re: New Board vs Wind

    I worked on a building project in Minneapolis where the structure had a 2 -story, cross walk type structure that cantilevered out the side of the building 175 feet. After hours one night I took one of the bolts they used on the gusset connecting the "bridge" (cross walk) to the main building structure. The bolt I have is about 2'0" long, the main shaft is about 3" in diameter and it weighs about 60 lbs. They used nearly 400 of those bolts on the structure. It was a pretty incredible project to work on.



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    Re: New Board vs Wind

    Quote Originally Posted by isuno1fan View Post
    70mph gusts (1-2 sec) are common, but 90mph sustained for 3 seconds pretty much needs a tornado to come through to get that.
    Interesting, thanks.


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  12. #12
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    Re: New Board vs Wind

    Quote Originally Posted by CP44 View Post
    I asked them this same question. They said that it is almost impossible to have a gust that high for that long. TIFWIW
    Sounds like a challenge.



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    Re: New Board vs Wind

    i imagine the direction of the wind would play in as well. straight out of north or south would catch it most


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    Re: New Board vs Wind

    You also have to keep in mind that the 90 mph wind for 3 seconds was probably the minimum design criteria so it was likely actually designed with at least a 1.5 safety factor.



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    Re: New Board vs Wind

    Looks like the new structure will get it's first test when all those blow hards from Iowa City show up on September 10th.

    See what I did there?



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