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to marigolds
Re: Tornados & House Structure Question.. |
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marigoldsGainfully employed, finally MVM join:2002-05-13 Saint Louis, MO |
Even in 250mph zones, FEMA safe room specs only test out to 100mph missile speed on vertical surfaces. You can go beyond FEMA specs up to a 150 mph missile strike rating, but that is as far as anyone goes right now.
The highest spec, FEMA 361 255 mph hurricane zone, is designed for 128 mph missile speed, which is only EF2. Above ground EF3 hardened buildings typically use buffer space (essentially giant safe rooms inside the buildings) rather than building the entire building to withstand EF3.
You can only get higher than that by going underground (which eliminates missile strike ratings). Once you go into above ground, missile strike is going to prevent getting higher. |
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alkizmo join:2007-06-25 Pierrefonds, QC |
said by marigolds:Even in 250mph zones, FEMA safe room specs only test out to 100mph missile speed on vertical surfaces. You can go beyond FEMA specs up to a 150 mph missile strike rating, but that is as far as anyone goes right now. When you say specs to 100mph missile speed, do you mean projectiles going at 100mph or wind? Wind may go to 250mph, but any real damaging debris wouldn't follow at that speed, hence why 150mph might be okay? I'm not saying you're wrong, I'm just asking about what the specs represent. |
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to Jack_in_VA
After the house collapses on top of your safe room, how do you get out? |
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marigoldsGainfully employed, finally MVM join:2002-05-13 Saint Louis, MO |
to alkizmo
Yeah, that's projectile speed. I think the standard projectile is a 2' 2"x4". (not sure on the length, but it is a 2x4). |
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KrKHeavy Artillery For The Little Guy Premium Member join:2000-01-17 Tulsa, OK |
to aannoonn
You wait for rescue.
If you have wired an external antenna you may be able to call for help with your cell phone. |
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to aannoonn
said by aannoonn :After the house collapses on top of your safe room, how do you get out? You phone for help. Didn't you notice the phone on the wall next to the flat screen tv? |
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robbin Mod join:2000-09-21 Leander, TX |
to aannoonn
said by aannoonn :After the house collapses on top of your safe room, how do you get out? If you actually build a safe room you can usually register it with local authorities. Rescuers will use these checklists to make sure no one is trapped. Here is an example » www.ci.norman.ok.us/cont ··· stration |
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tmh @verizon.net |
to Jack_in_VA
said by Jack_in_VA:More Good solutions for those in Tornado prone areas. This is pretty cool. How long does the power last? Is that a chemical toilet on the bottom left? I assume the device to the left of the TV is a GSM dialer for the phone. A reinforced structure like this makes a pretty good all around saferoom. The walls must be thick enough to resist small arms fire. |
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