Doing a retracement on an old RR.?ÿ Found this cool web-based chord definition curve calculator.?ÿ Working with a 2?ø curve, the answer it gives threw me for a minute, same w/ 1?ø, 3?ø, etc.?ÿ M Naveen & Mridul Sharma should be proud!
These curve calculators, and other calculators/unit converters, are rampant on the Internet. I used one for U.S. Survey Foot conversions just the other month. I contacted the author for lack of completeness.
I humbly offer my curve calculator for evaluation.?ÿ It is a Windows exe that you can save anywhere on your computer with no other installation steps needed.
You enter a parameter in two of the groups and it computes the rest.?ÿ It does most common pairs of parameters, but not some pairs that give poor numerical accuracy.
Download (CurveCalc.exe)
I just have mine programmed into my HP48.
Works on the calc, on the computer with emu48, and on my phone with droid 48.
Here's my formula sheet, where I try to clearly differentiate between railroad (chord) and highway (arc) definitions.
I like your "inbound route" and "outbound route" as opposed to the traditional "back tangent" and "forward tangent."
Well, dang, I must have done something wrong, it's not the number I have been using for 40 years. Does anyone calculate 1d, 2d, radius curves or just know the number??ÿ
1 degree railroad, R= 5729.65 ; 1 degree highway R= 5729.58 ft
2 degree railroad, R= 2864.93 ; 2 degree highway R= 2864.79
3 degree railroad, R= 1910.08 ; 3 degree highway R= 1909.86