spider ramp

[Russ Tine <rtalfa@xxxxxxxxx>]

After spending too much time in a portable garage, my spider will be moving to a permanent building. The only drawback to this is that the building is raised about 15 inches off the ground. The engine is still out, so the car is sitting higher than normal. I want to design a ramp long enough for the car to clear, but I am not sure how to figure it out with the spider sitting up the way it is now.
Any one have an idea on how long the ramp should be? 
 
Thanks,
Russ Tine
 
75 Spider
87 Milano
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