I have a Val map with a spiral curve spiral for centerline. How do I determine the Row 75 feet left which should be a simple curve if I am not mistaken. Was given no information for Row except that it is 75 feet left. I have reestablished centerline from old culverts etc that at in tangent
Need the conveyance document for the right of way to know with any certainty. Then compare it with the valuation map.
JBS
Not much on the conveyance doc that specifies what this would be.
Most of the railroad deeds here specify a degree of curve and an approximate length. The degree of curve is usually chord definition. We are fortunate to have very complete plans readily available.
What elements and calls are shown in the railroad deed?
It is my understanding that you are correct that regardless of the spiral geometry of the track design that the right-of-way curves are circular, at least that is what I was told in a railroad surveying seminar hosted by FSMS. Les Odom, surveyor for CSX, recommended establishing the tangents of the existing tracks and forcing a circular curve through the center of the tracks at the approximate mid point of the curve and offsetting that by the 1/2 right of way width, but I take it from your wording that the tracks no longer exist which makes it difficult to do that. Do you have any culverts that occur within the curve that might help you establish a point in the curve?
Randy Rain, post: 339569, member: 35 wrote: It is my understanding that you are correct that regardless of the spiral geometry of the track design that the right-of-way curves are circular, at least that is what I was told in a railroad surveying seminar hosted by FSMS. Les Odom, surveyor for CSX, recommended establishing the tangents of the existing tracks and forcing a circular curve through the center of the tracks at the approximate mid point of the curve and offsetting that by the 1/2 right of way width, but I take it from your wording that the tracks no longer exist which makes it difficult to do that. Do you have any culverts that occur within the curve that might help you establish a point in the curve?
A word of caution...
I worked through a solution like that on a section of railroad once. The Surveyor working for the railroad was a brilliant man with vast practical knowledge. When the Plat was sent to the Railroad for a courtesy review they flipped out. That is when I learned about authority to act on behalf of a corporation. Lucky for us the lots grew 2 feet. They were all hand drafted at minimum square footage...
KCSurveyor, post: 339563, member: 10589 wrote: Not much on the conveyance doc that specifies what this would be.
Nevertheless, that is the document that controls the location of the line...
I think I'd work the tangents in and our, regardless of whether the tracks are in place, and look for structures to set the stations in and set the curve and roll on.
KCSurveyor, post: 339563, member: 10589 wrote: Not much on the conveyance doc that specifies what this would be.
The real doc may be the original map, one thing is certain is it's not the val map.
That's the case here - the original A&P map is almost legible! Even has a few tie to section or quarter corners every 4-10 miles. Falls in the "extremely challenging category...
Finally got a hold of some of the surrounding originating deeds and was able to get the required information. It took some digging into the vast secret vaults of the railroad to find that out. The bad part is that a subdivision, platted back in the early 50's used the wrong simple curve radius (Must have assumed something), that now has part of this platted land over the railroad right of way.