Jeez, I hope this doesn't last too long...

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Re: Jeez, I hope this doesn't last too long...

Postby jasonh300 » Sat Aug 25, 2012 1:58 am

mapcat wrote:
jasonh300 wrote:I hope that it's just a picture of a truck, placed there to cast fear into the hearts of anyone who attempts to drive that road.

Sign says "Trucks use lower gear".


It works, doesn't it?
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Re: Jeez, I hope this doesn't last too long...

Postby xtago » Sat Aug 25, 2012 2:16 am

LOL looks like an Australian sign.

Its looks like a far kenworth it road.

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Re: Jeez, I hope this doesn't last too long...

Postby mapcat » Sat Aug 25, 2012 4:37 am

jasonh300 wrote:It works, doesn't it?

"Trucks TURN AROUND NOW" would work better.
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Re: Jeez, I hope this doesn't last too long...

Postby harling » Sat Aug 25, 2012 5:01 am

14% grade: arctan(0.14) = 8 deg.
27% grade: arctan(0.27) = 15 deg.
33% grade: arctan(0.33) = 18 deg.
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Jeez, I hope this doesn't last too long...

Postby jasonh300 » Sat Aug 25, 2012 6:56 am

harling wrote:14% grade: arctan(0.14) = 8 deg.
27% grade: arctan(0.27) = 15 deg.
33% grade: arctan(0.33) = 18 deg.


So would 100% be 45 deg. or 90 deg.?
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Re: Jeez, I hope this doesn't last too long...

Postby AlanOfTheBerg » Sat Aug 25, 2012 7:07 am

jasonh300 wrote:So would 100% be 45 deg. or 90 deg.?

I imagine it would be 45deg where rise=run. Or run=fall. :o
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Jeez, I hope this doesn't last too long...

Postby jasonh300 » Sat Aug 25, 2012 7:24 am

AlanOfTheBerg wrote:
jasonh300 wrote:So would 100% be 45 deg. or 90 deg.?

I imagine it would be 45deg where rise=run. Or run=fall. :o


Fall is right in that case. At that angle, I don't think anyone would be rising.
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Re: Jeez, I hope this doesn't last too long...

Postby harling » Sat Aug 25, 2012 7:54 am

AlanOfTheBerg wrote:
jasonh300 wrote:So would 100% be 45 deg. or 90 deg.?

I imagine it would be 45deg where rise=run. Or run=fall. :o

100% grade (1m down for 1m forward): arctan(1.00) = 45 deg.

The "grade" of a vertical cliff is infinite.
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Jeez, I hope this doesn't last too long...

Postby fvwazing » Sat Aug 25, 2012 10:02 am

1m down for 1m of road? 90 degrees, of course.

Edit:
Oops, my bad. Definition uses horizontal movement, not length of road.
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Jeez, I hope this doesn't last too long...

Postby jasonh300 » Sat Aug 25, 2012 1:41 pm

fvwazing wrote:1m down for 1m of road? 90 degrees, of course.

Edit:
Oops, my bad. Definition uses horizontal movement, not length of road.


Actually, you did say "length of road" (hypotenuse?) in your first post, but everything else involving pitch or grade is measured rise over run, so I suppose this would be too.

It's been 23 years since my last geometry class...
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