NAC, but wrenching content

[Grant Lenahan]

I'm not sure on either.

I would guess that its more dangerous now, since the strongest point 
(corrugated) is now deformed and very narrow. This means, I think, that 
forces will not be straight up and down on it, and therefore it could 
begin to fold sideways.

If you straighten it, it will be better, but it will not likely be 
truly straight, and any temper to the metal will now have been worked 
twice.

Grant
On Mar 19, 2006, at 11:00 PM, Andrew Buc wrote:

> For a few years I've had a pair of stamped sheet-steel ramps that you
> can drive a car onto in order to get one end in the air w/o jacking it
> up. If you took a cross-section of the ramp at most points, it would be
> like this:
>
>   _______
> U       U
>
> The tire rests on the flat surface between the U-shaped sections (which
> are shown upside down above). I've roughly eyeballed the U-shaped
> sections at 1.5" wide x 2" high. On one of the ramps, one of the
> U-shaped sections has been deformed so the straight parts of the U are
> about 1/4" apart, and not quite parallel. This is at the place where
> the cross-section actually rests on the ground, at the opposite end
> from the gently sloped end that you drive the car onto. I'm sure I
> could insert a tool and spread the sides out to their original width,
> or close to, but would the ramp then be dangerous to use? Is it
> dangerous to use now? If the answer is yes, they're going straight in
> the dumpster. TIA
>
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