Gradient Diagrams
- Thread starter 0099
- Start date
...more information please...
8) Do you mean using the railroad track charts, for a map?
Or do you mean making routes with prototype grades?
If you want to learn how to make routes, your talking DEM, or digital elevation modeling.
Search for DEM, on the Forums(also know as DEM maps).
8) Do you mean using the railroad track charts, for a map?
Or do you mean making routes with prototype grades?
If you want to learn how to make routes, your talking DEM, or digital elevation modeling.
Search for DEM, on the Forums(also know as DEM maps).
I think he means something like this.
http://www.urbaneagle.com/data/RRgrades.html
There are ones for curves too.
http://www.urbaneagle.com/data/deg-curve.txt
http://www.urbaneagle.com/data/RRgrades.html
There are ones for curves too.
http://www.urbaneagle.com/data/deg-curve.txt
Sorry to be honest i have no idea what im talking about here
Heres the linkto the one i wan't to use( sorry but you will have to install it to veiw it)
http://www.railcorp.info/__data/assets/file/0020/686/Curve__and__Gradient_Diagrams_V2-0_b.zip
Heres the linkto the one i wan't to use( sorry but you will have to install it to veiw it)
http://www.railcorp.info/__data/assets/file/0020/686/Curve__and__Gradient_Diagrams_V2-0_b.zip
...I know...
8) When you say "no interest in the curves, just grades," that gives me a clue that you want some kind of info like trackcharts, that give the up and downhill profile, of the route.
Some routes, include .pdf charts, although no grade profile.
I wish they would, it's hard to tell, unless you constantly watch the ammeter, or traction guage.
It's all part of learning the route. DEM's, are more difficult, because they have more up and downhill grades.
8) When you say "no interest in the curves, just grades," that gives me a clue that you want some kind of info like trackcharts, that give the up and downhill profile, of the route.
Some routes, include .pdf charts, although no grade profile.
I wish they would, it's hard to tell, unless you constantly watch the ammeter, or traction guage.
It's all part of learning the route. DEM's, are more difficult, because they have more up and downhill grades.
First I'll deal with the gradient bit...
A rising line from left to right indicates a rising gradient in that direction and a dropping line indicates a falling gradient. The numbers indicate the 1:xx value of the gradient. (e.g. 73 = 1/73, 180 = 1/180). The thin lines either side of the numbers show the distance of the gradient.
So...if you turn in your reference manual to "Ardglen Bank" (Main Northern Line pg 83). If we start at the tunnel (which is level - L) and proceed North (left to right)...on exiting the tunnel we start falling at a rate of 1/147. Just past the 363km mark (kms are indicated by the dotted lines, and are measured from Sydney Term) we start dropping further at 1/107 (don't worry about the 'compensated' figure) for almost a km. At about 363.9km the gradient reduces further to 1/44, then 1/43, then 1/40 and contunues to drop at various gradients until 383.2km, where we climb up a 1/528 gradient for about 150m, then up 1/166 for about 500m. And so it goes on.
The curve diagram measures the curve radius and length of the curve (the diagram shows the start and finish of the curve). To make it a little complicated, a curve that appears at the top of the line actually curves to the left and below the line to the right. Long broad curves will deviate little from the centre line while tight curves will deviate more. The angled line at the start and end of the curve represents the 'transition' from the straight to the curve. Like the gradient diagram, the kilometre lines represent how far along the line the curves are.
There's a helpful "how to" section in that manual on pages 12-14.
Hope this helps.
A rising line from left to right indicates a rising gradient in that direction and a dropping line indicates a falling gradient. The numbers indicate the 1:xx value of the gradient. (e.g. 73 = 1/73, 180 = 1/180). The thin lines either side of the numbers show the distance of the gradient.
So...if you turn in your reference manual to "Ardglen Bank" (Main Northern Line pg 83). If we start at the tunnel (which is level - L) and proceed North (left to right)...on exiting the tunnel we start falling at a rate of 1/147. Just past the 363km mark (kms are indicated by the dotted lines, and are measured from Sydney Term) we start dropping further at 1/107 (don't worry about the 'compensated' figure) for almost a km. At about 363.9km the gradient reduces further to 1/44, then 1/43, then 1/40 and contunues to drop at various gradients until 383.2km, where we climb up a 1/528 gradient for about 150m, then up 1/166 for about 500m. And so it goes on.
The curve diagram measures the curve radius and length of the curve (the diagram shows the start and finish of the curve). To make it a little complicated, a curve that appears at the top of the line actually curves to the left and below the line to the right. Long broad curves will deviate little from the centre line while tight curves will deviate more. The angled line at the start and end of the curve represents the 'transition' from the straight to the curve. Like the gradient diagram, the kilometre lines represent how far along the line the curves are.
There's a helpful "how to" section in that manual on pages 12-14.
Hope this helps.
...thanks '99!...
8) Your link, has brought to me the "Mother of All Trackchart Tutorials!"
Like, 576 pages, of in depth information!
Yes, the trackcharts like these, should be incorporated into any route that uses DE-Modeling for the terrain!
Flat routes, however, would not need this...
8) Your link, has brought to me the "Mother of All Trackchart Tutorials!"
Like, 576 pages, of in depth information!
Yes, the trackcharts like these, should be incorporated into any route that uses DE-Modeling for the terrain!
Flat routes, however, would not need this...