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

Moderator: Unholy

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

Postby floppyrod84 » Fri Aug 24, 2012 11:58 pm

We have 33% locally, and higher elsewhere.

Sent from my GT-I9100P using Tapatalk 2
floppyrod84
 
Posts: 2569
Joined: Wed Jan 19, 2011 3:17 pm
Location: Sheerness, Kent, UK
Has thanked: 46 times
Been thanked: 45 times

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

Postby mapcat » Fri Aug 24, 2012 11:58 pm

What the hell are trucks doing on that road?!

Where is that? I want to make sure I avoid it.
mapcat
 
Posts: 2444
Joined: Mon Dec 20, 2010 5:29 am
Has thanked: 95 times
Been thanked: 196 times

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

Postby bgodette » Fri Aug 24, 2012 10:54 pm

jasonh300 wrote:
fvwazing wrote:14% means the road drops 14m if you drive 100m. That is pretty steep.


What is that in feet? :lol: j/k

Yes, that's pretty steep. I did some research and the steepest grade on the U.S. Interstate system is 8%, and I have driven it (I-24/US-41/64 Westbound over Monteagle Mountain, TN).
For comparison, and I'm sure you drove it, the natural grade of Lombard St is 27% but the effective grade is 14% to 16%.
bgodette
Waze Global Champs
Waze Global Champs
 
Posts: 3418
Joined: Wed Jul 06, 2011 8:19 pm
Location: Denver, CO
Has thanked: 109 times
Been thanked: 507 times

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

Postby jasonh300 » Fri Aug 24, 2012 10:37 pm

fvwazing wrote:14% means the road drops 14m if you drive 100m. That is pretty steep.


What is that in feet? :lol: j/k

Yes, that's pretty steep. I did some research and the steepest grade on the U.S. Interstate system is 8%, and I have driven it (I-24/US-41/64 Westbound over Monteagle Mountain, TN).
jasonh300
 
Posts: 7567
Joined: Fri Oct 28, 2011 4:26 pm
Location: New Orleans, LA, USA
Has thanked: 402 times
Been thanked: 978 times

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

Postby jasonh300 » Fri Aug 24, 2012 10:13 pm

I have no concept of what 14% grade is. What is that in degrees? Or rise over run?

I've seen those signs before in eastern Tennessee between Chattanooga and Nashville, and also in Pennsylvania around Bethlehem. I know when the number's above 10, it's pretty friggin steep. I was also driving a moving van through Kentucky one time and couldn't maintain 30 MPH on the interstate on an incline.

Of course, I live in a place where you can park in neutral and not set the parking brake and your car will probably not move an inch.
jasonh300
 
Posts: 7567
Joined: Fri Oct 28, 2011 4:26 pm
Location: New Orleans, LA, USA
Has thanked: 402 times
Been thanked: 978 times

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

Postby fvwazing » Sat Aug 25, 2012 9:24 pm

That is how I calculated/interpreted those roadsigns all the years! But harling was so assured that I looked it up - http://en.wikipedia.org/wiki/Grade_%28slope%29 - and well, the difference is not sooo big if the percentage is small.
fvwazing
 
Posts: 3589
Joined: Sat Nov 14, 2009 2:48 pm
Has thanked: 415 times
Been thanked: 385 times

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...
jasonh300
 
Posts: 7567
Joined: Fri Oct 28, 2011 4:26 pm
Location: New Orleans, LA, USA
Has thanked: 402 times
Been thanked: 978 times

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.
fvwazing
 
Posts: 3589
Joined: Sat Nov 14, 2009 2:48 pm
Has thanked: 415 times
Been thanked: 385 times

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.
jasonh300
 
Posts: 7567
Joined: Fri Oct 28, 2011 4:26 pm
Location: New Orleans, LA, USA
Has thanked: 402 times
Been thanked: 978 times

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.?
jasonh300
 
Posts: 7567
Joined: Fri Oct 28, 2011 4:26 pm
Location: New Orleans, LA, USA
Has thanked: 402 times
Been thanked: 978 times

PreviousNext

Return to Off-topic

Who is online

Users browsing this forum: No registered users