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alkizmo
join:2007-06-25
Pierrefonds, QC

alkizmo to marigolds

Member

to marigolds

Re: Tornados & House Structure Question..

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.

marigolds
Gainfully employed, finally
MVM
join:2002-05-13
Saint Louis, MO

marigolds

MVM

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).