This was posted on a Casita
forum. The numbers should apply pretty close. Sounds like you were pretty much into the "Peach Pit" level of wind.
Here is one engineers, quick and dirty, Free assesment, of your Question. There are so many variables, I used my professional judgement to make several engineering assumptions. They are on the conservative side.
- 100 square foot, side cross section area (7x14)
- 100 MPH wind or wind gust
- Air density 0.08 lbm per ft cubed
- center of lateral force 54 inches above the ground
- 1250 lbm per wheel down force at 66" between centers
- camper doesn't slide sideways but pivots on leward wheel
wind force - 100MPH / 3600sec/hr X 5280ft/mile X 0.08 lbm/ft cubed X 100sq ft = 1200 lbs force/sec
Force resultant - (66in X 1250lbm CW ) - (1200lbf X 54in CCW) / 66in = 250 lbs of down force on the windward wheel
Margin of safety - 250lbm final / 1250 lbm initial X 100 = 20 percent.
-A 20 percent margin of safety is not very good. Especially with quick and dirty conservative calcs.
-If they are predicting 100mph, and above, gusts I would take corrective action.
-100MPH wind gusts seem to be the break over point. As the wind gusts approach 100 you need to be approaching corrective action. If the wind gusts are over 100 you should have allready taken corrective action.
- Parking your trailer so the ends (not the sides), take the brunt of the force, would help.
- Parking a car, or truck, beside (windward side) the camper would help block/absorb some of the sideforce wind.
- Anything up to 50 MPH gusts, I'd not do much. (750lbs downforce on windward tire). At 75MPH gusts, I'd be nervious as a possum passing a peach pit. (525 lbs down force on windward tire).
Disclamer: Your milage may very, you are getting what you are paying for.