Author Topic: Super in Vertical Curve  (Read 443 times)

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quaziconscience

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Super in Vertical Curve
« on: January 11, 2018, 09:47:37 PM »
Anyone have a profile example of a vertical curve with a super elevation in it? Typically I'd use the standard super elevation graph but have been asked to show a profile.  I'm thinking since the superelvation literally breaks the vertical curve that the typical information wouldn't apply (k value, grade in, grade out, etc)...but could be wrong.  Anyone have experience with this?

mjfarrell

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Re: Super in Vertical Curve
« Reply #1 on: January 12, 2018, 08:50:06 AM »
If I understand the design is such that there is a Vertical Curve, that is occurring at or about the same place that the roadway is also being 'super elevated' due to the location of a horizontal curve in the alignment.   Right?


There are two pieces of information, and technically the VC is still being applied to the centerline alignment, so you should
annotate/label the centerline to show the VC, somewhere in, on, or near the profile.

Then you have the superelevation parameters, there is a band set for that, and during actual construction the super elevation parameters will control the grading.


If you still want or need the profile(s), for left, right and center,  Run your templates, extract and alignment from the correct feature lines and project (superimpose)
that alignments profile into the profile view you will place in your plan set.
Be your Best


Michael Farrell
http://primeservicesglobal.com/

quaziconscience

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Re: Super in Vertical Curve
« Reply #2 on: January 12, 2018, 04:09:00 PM »
Thanks MJ,  this is the workflow I've been running with.  looking to see what people typical show in profile view (concerning data) with this particular case.... Like you mentioned, I've always just relied on the graph but peeps insist on showing some data, though those same peeps don't know what data they want shown XD


If I understand the design is such that there is a Vertical Curve, that is occurring at or about the same place that the roadway is also being 'super elevated' due to the location of a horizontal curve in the alignment.   Right?


There are two pieces of information, and technically the VC is still being applied to the centerline alignment, so you should
annotate/label the centerline to show the VC, somewhere in, on, or near the profile.

Then you have the superelevation parameters, there is a band set for that, and during actual construction the super elevation parameters will control the grading.


If you still want or need the profile(s), for left, right and center,  Run your templates, extract and alignment from the correct feature lines and project (superimpose)
that alignments profile into the profile view you will place in your plan set.

mjfarrell

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  • Every Student their own Lesson
Re: Super in Vertical Curve
« Reply #3 on: January 14, 2018, 12:42:40 PM »
Thanks MJ,  this is the workflow I've been running with.  looking to see what people typical show in profile view (concerning data) with this particular case.... Like you mentioned, I've always just relied on the graph but peeps insist on showing some data, though those same peeps don't know what data they want shown XD


If I understand the design is such that there is a Vertical Curve, that is occurring at or about the same place that the roadway is also being 'super elevated' due to the location of a horizontal curve in the alignment.   Right?


There are two pieces of information, and technically the VC is still being applied to the centerline alignment, so you should
annotate/label the centerline to show the VC, somewhere in, on, or near the profile.

Then you have the superelevation parameters, there is a band set for that, and during actual construction the super elevation parameters will control the grading.


If you still want or need the profile(s), for left, right and center,  Run your templates, extract and alignment from the correct feature lines and project (superimpose)
that alignments profile into the profile view you will place in your plan set.

Those peeps, and yourself must keep in mind the purpose of the plans is to build something, if it can not be built from your data, then the plans are of no use.

In this instance; yes the superelevation technically 'breaks' the vertical curve, however, that VC is still controlling the centerline vertical elevation parameters, before and after where the super elevation intrudes on that.
Be your Best


Michael Farrell
http://primeservicesglobal.com/

quaziconscience

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Re: Super in Vertical Curve
« Reply #4 on: January 15, 2018, 01:28:34 AM »
Agree amigo