Here's what I went him.
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Your whole premise seems off base. If the weight you are attempting
to carry/lift so overloads axle groups by any semblance of reasonable
limits, why are you persisting on attempting to change the ground
rules. go to a different truck design -- possibly one utilizing a
trailer, wherein you can get more axles uner the thing.
______________________________ Reply Separator _________________________________
Subject: Re: Towtruck Mass Permits
Author: [log in to unmask] at Internet
Date: 11/19/1999 11:37 AM
In a message dated 11/18/99 6:23:24 PM Mountain Standard Time,
[log in to unmask] writes:
<< Has any one had any success in getting approval to operate towtrucks with a
rear axle mass in the order of 23t? >>
Like the local regulatory authorities, I am also horrified by your proposal.
There is a fourth power damage equation for asphalt pavement loading on
single axles. If a normal axle load is 18,000 lbs (9tons), then your 23 ton
axle will do the equivalent damage of (23/9)4th power = (2.5555)4th power =
42.65 equivalent single axle loads. This would be one of the worst cases of
overloading a pavement that I have ever encountered, and would lead to
extremely rapid deterioration of the pavement. I would be very disinclined
to permit this sort of a vehicle to operate on a public highway. Sorry.
If there have been more discussions of this topic on this list-serv, I would
be very interested to hear about them.
Steve Mueller
Denver, CO, USA
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