Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

Sean Keene — Fri, 22 Jul 2016 17:31:37 GMT

I have not

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

ADRIAN FERNANDEZ — Fri, 22 Jul 2016 16:27:35 GMT

Did you ever get an answer in regards DOC not being correctly calculated?

I'm having the issue where the input from the file is not being correctly calculated in COGO.

There is a difference between the Civil Report and the COGO Report.

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

Sean Keene — Fri, 25 Sep 2015 19:29:19 GMT

I see that in the latest version of OpenRoads this defect is one of the Horizontal Geometry Enhancements. I can verify that it is calculating the curves based upon degree of curve(DOC) definition but the results do not match the OpenRoads Help file on DOC definition of arcs. Specifically under Civil Geometry->Getting Started->Civil Geometry Degree of Curve states that you can enter DOC definition by entering d followed by the DOC and the heads up prompt will show the DOC. Also once the curve is placed once you select the curve the DOC should show up in the manipulators.

From my experience this is not working.

Step 1 - Establish tangents and then create curve between tangents by using DOC.

Step 2 - Accept DOC entry but Radius is shown in heads up dialog

Step 3 - After placing arc manipulator shows radius not DOC

Please let me know if this is still a defect or it should have been fixed with the recent release.

MSV8i - 08.11.09.714

OpenRoads (Geopak flavor) - 08.11.09.845

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

Nico Roman — Tue, 24 Feb 2015 12:18:49 GMT

there is a defect already filed on this Defect 131695:Horizontal Geometry - Radius field not accepting DOC value if DOC method = chord

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

Sean Keene — Mon, 23 Feb 2015 11:59:24 GMT

If there is not an answer for this issue I am having can a TR be filed?

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

Sean Keene — Mon, 02 Feb 2015 15:39:18 GMT

bump

RE: Open Roads - Arc vs Chord definition - Spiral Curve Spiral Tool

Mike Longstreet — Wed, 14 Jan 2015 15:40:37 GMT

It seems you should be able to use the Degree of Curve method for either the Arc Definition or Chord Definition geometry and the report should indicate the method used to calculate the Degree of curve. If I generate geometry in SS2 InRoads creating one horizontal geometry using Arch and one using Chord both with the radius calculated using a D=10 the geometry reports seem to work fine. However if I then import the same geometry into OpenRoads graphical geometry the report only calculates the Degree of curve using the Arch formula. See reports below.

InRoads SS2 Geometry report

Radius:           573.6857
Delta:     45^00'00.0000" Right
Degree of Curvature(Chord):     10^00'00.0000"

Radius:           572.9578
Delta:     45^00'00.0000" Right
Degree of Curvature(Arc):     10^00'00.0000"

***************************************************
OpenRoads Geometry report

Radius: 572.957795
Delta: 45.000000 Right
Degree of Curvature (Arc): 10.000000

Radius: 573.685662
Delta: 45.000000 Right
Degree of Curvature (Arc): 9.987312

If you change the design file setting for Degree of Curve Method from Arc to Chord the report then indicates that the Degree of curve method is Chord, but still uses the Arch method to calculate and report the DOC, as seen below and above, where the DOC of Arc and the DOC of Chord for a Radius of (573.685662) are shown to be the same value (9.987312).

Radius: 573.685662
Delta: 45.000000 Right
Degree of Curvature (Chord): 9.987312