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Regional Boards => Mid-South => Topic started by: blawp on April 30, 2012, 12:58:03 AM

Title: Smallest radius Loop in Texas?
Post by: blawp on April 30, 2012, 12:58:03 AM
Is it the one in Crockett? Is there another one I'm missing?
Title: Re: Smallest radius Loop in Texas?
Post by: bassoon1986 on April 30, 2012, 01:54:41 PM
I can't remember if it's a spur or loop but 157 in Teneha is pretty tiny
Title: Re: Smallest radius Loop in Texas?
Post by: national highway 1 on April 30, 2012, 08:35:06 PM
Wow, Loop 157 is only 1.4 mi long, it could be BUS US 96.
Title: Re: Smallest radius Loop in Texas?
Post by: bassoon1986 on April 30, 2012, 09:12:11 PM
Are you still talking about why 157 in Teneha bc it would be BUS 59 or 84. 96 only begins southeast of Teneha proper
Title: Re: Smallest radius Loop in Texas?
Post by: NE2 on May 01, 2012, 12:39:55 AM
Quote from: bassoon1986 on April 30, 2012, 01:54:41 PM
I can't remember if it's a spur or loop but 157 in Teneha is pretty tiny
How would you define the radius of that one?
Title: Re: Smallest radius Loop in Texas?
Post by: US71 on May 21, 2012, 06:57:52 PM
Quote from: NE2 on May 01, 2012, 12:39:55 AM
Quote from: bassoon1986 on April 30, 2012, 01:54:41 PM
I can't remember if it's a spur or loop but 157 in Teneha is pretty tiny
How would you define the radius of that one?

FWIW, it's signed as a Loop. I'm sure there is a way to define its radius given the proper math skills.
Title: Re: Smallest radius Loop in Texas?
Post by: Alps on May 21, 2012, 08:55:26 PM
You would need to define an arc segment equation (x^2+y^2=C) that represents the least squares fit to the actual loop route. Assuming you can get the centerline defined in GIS or from record plans, it becomes a set of equations mixing algebra, trig, and calculus. Doable, but not something I'd want to dive into.
Title: Re: Smallest radius Loop in Texas?
Post by: J N Winkler on May 21, 2012, 09:06:49 PM
I don't think all state Loops in Texas are in fact closed loops.  It is still possible to define radius mathematically for open loops, but the exercise loses some of its point.
Title: Re: Smallest radius Loop in Texas?
Post by: Alps on May 21, 2012, 09:13:45 PM
Quote from: J N Winkler on May 21, 2012, 09:06:49 PM
I don't think all state Loops in Texas are in fact closed loops.  It is still possible to define radius mathematically for open loops, but the exercise loses some of its point.
I was referring to open loops. Closed loops are much easier to define - get the area inside, divide by pi and take the square root.
Title: Re: Smallest radius Loop in Texas?
Post by: austrini on May 24, 2012, 09:22:07 AM
It doesnt go all the way around, but the one in Gladewater is less than a mile from their downtown.