New Board vs Wind

[Cyclones_R_GR8]

The only 5 foot 85lb bolt I know of was Wayne Bolt.
The only other thing I was concerned about, was the roof structure of the Jake. With that wind ramping off the top of the bldg. I'm wondering if that would have any influence on the supports. Also, does anyone know how deep those support go down into the ground?

I think they said 65 feet in the release

[vortex]

The most destructive component of any wind gust is rapid acceleration. Going from say 30mph to 80 or 90mph or more within two or three seconds (ie tornado) is what causes the most extensive damage. It's like standing in a 50mph wind, if the wind comes up slowly you can remain upright by leaning into it. If a 50mph wind gust hits you instantaneously, you wind up on your *****.

[tube1]

No kidding. Might as well ask if they made sure the electronics are going to be protected from the rain or cold weather, just about as reasonable.

But what about the sun? The board will be facing south and the screen will wash out with the sunlight! Horrors!

[agrabes]

The most destructive component of any wind gust is rapid acceleration. Going from say 30mph to 80 or 90mph or more within two or three seconds (ie tornado) is what causes the most extensive damage. It's like standing in a 50mph wind, if the wind comes up slowly you can remain upright by leaning into it. If a 50mph wind gust hits you instantaneously, you wind up on your *****.

Well, if the scoreboard can react to increasing winds and lean into them I'll be highly impressed...

Seriously though, that might be the component that makes it hardest to stand up in a wind but it's not the strongest component. The wind speed/pressure it puts on a building is the strongest component. The acceleration of the wind (unless it's rapidly changing directions) is not going to affect buildings. Whether a wind comes up quickly or builds over time, a 90 mph wind will exert the same pressure on the building. Just like a bridge will hold one ton of weight whether you drive a one ton truck onto it all at once or you add the weight in 20 lb increments over 10 days. If it can hold 1 ton, it can hold 1 ton.

[Ciclone]

I think they said 65 feet in the release

I want a scoreboard project webcam. Someone go get someone else on that, pronto!

[M6WS6]

I want a scoreboard project webcam. Someone go get someone else on that, pronto!

I would watch that just as much if not more than some people watch the eagle cam!

[jdoggivjc]

Well, if the scoreboard can react to increasing winds and lean into them I'll be highly impressed...

Seriously though, that might be the component that makes it hardest to stand up in a wind but it's not the strongest component. The wind speed/pressure it puts on a building is the strongest component. The acceleration of the wind (unless it's rapidly changing directions) is not going to affect buildings. Whether a wind comes up quickly or builds over time, a 90 mph wind will exert the same pressure on the building. Just like a bridge will hold one ton of weight whether you drive a one ton truck onto it all at once or you add the weight in 20 lb increments over 10 days. If it can hold 1 ton, it can hold 1 ton.

What you aren't taking into account is that object on your bridge IS accelerating - it could not possibly be applying a force to your bridge if it weren't. The pressure you are describing is a force, and the Statics equation for a force is F=ma. If your object's acceleration = 0, the force being applied to your bridge would also = 0. In this case, the object's acceleration = gravity = -9.83 m/s^2.

So yes, the speed of the wind in itself is nothing - it's the acceleration of the air molecules (and whatever else is being carried by the wind) as a result of the wind times the mass of the air molecules (and whatever else is being carried by the wind) that applies the force to the scoreboard - not the wind.

[SvrWxCy]

I want a scoreboard project webcam. Someone go get someone else on that, pronto!

Agreed... Somebody get an email into JP about having this setup ASAP!


Edit: Already sent the email; I'll let you know the response I get.

[Rhoadhoused]

What you aren't taking into account is that object on your bridge IS accelerating - it could not possibly be applying a force to your bridge if it weren't. The pressure you are describing is a force, and the Statics equation for a force is F=ma. If your object's acceleration = 0, the force being applied to your bridge would also = 0. In this case, the object's acceleration = gravity = -9.83 m/s^2.

So yes, the speed of the wind in itself is nothing - it's the acceleration of the air molecules (and whatever else is being carried by the wind) as a result of the wind times the mass of the air molecules (and whatever else is being carried by the wind) that applies the force to the scoreboard - not the wind.

BOOM! Roasted.

[cowboycurtis]

If I was going to worry about something it would be an ice storm. If you put a 1/2 inch coating of ice on the scoreboard and then had some wind. It might come down. But if you knew ice was coming i suppose you could just turn it on and it would generate enough heat to keep ice from forming.

[RayShimley]

What you aren't taking into account is that object on your bridge IS accelerating - it could not possibly be applying a force to your bridge if it weren't. The pressure you are describing is a force, and the Statics equation for a force is F=ma. If your object's acceleration = 0, the force being applied to your bridge would also = 0. In this case, the object's acceleration = gravity = -9.83 m/s^2.

So yes, the speed of the wind in itself is nothing - it's the acceleration of the air molecules (and whatever else is being carried by the wind) as a result of the wind times the mass of the air molecules (and whatever else is being carried by the wind) that applies the force to the scoreboard - not the wind.

Physicist'ed

[jsmith86]

If we want to get technical about it, it depends. See, the forces from a fluid are all interconnected by the Navier-Stokes equation. Really all that matters as far as the board is concerned is the pressure due to the wind. This depends on both the acceleration and the body forces and the stress tensor(s ( since we are talking turbulence)). If you really want to know how it will react, go run a CFD simulation on it, but I'm guessing that the people building it already have if they know how long it will stand up to a certain windspeed. Also, as mentioned earlier, they probably overbuilt it with a safety factor.

[ISUAgronomist]

What you aren't taking into account is that object on your bridge IS accelerating - it could not possibly be applying a force to your bridge if it weren't. The pressure you are describing is a force, and the Statics equation for a force is F=ma. If your object's acceleration = 0, the force being applied to your bridge would also = 0. In this case, the object's acceleration = gravity = -9.83 m/s^2.

So yes, the speed of the wind in itself is nothing - it's the acceleration of the air molecules (and whatever else is being carried by the wind) as a result of the wind times the mass of the air molecules (and whatever else is being carried by the wind) that applies the force to the scoreboard - not the wind.

If we want to get technical about it, it depends. See, the forces from a fluid are all interconnected by the Navier-Stokes equation. Really all that matters as far as the board is concerned is the pressure due to the wind. This depends on both the acceleration and the body forces and the stress tensor(s ( since we are talking turbulence)). If you really want to know how it will react, go run a CFD simulation on it, but I'm guessing that the people building it already have if they know how long it will stand up to a certain windspeed. Also, as mentioned earlier, they probably overbuilt it with a safety factor.

[ame=http://www.youtube.com/watch?v=gZEdDMQZaCU]YouTube - Revenge of the Nerds - NERDS![/ame]


I couldn't help it.

[jdoggivjc]

YouTube - Revenge of the Nerds - NERDS!


I couldn't help it.

Doesn't matter - it was well played...

[CYTruck]

I thought it would be cool to place a 3D cyclone/tornado around the support poles....
Something that could be seen from any direction.. and maybe from inside the stadium have it with Cy on it..