DEMs and fictional routes - not necessarily the reail thing.

JCitron

Trainzing since 12-2003
Hopefully you'll find this useful as a way to come up with route ideas. This seems to be a common problem that many people ask about frequently in the forums.

Route building can be tough. We look for stuff to build, try out ideas, and trash them. For me and probably a lot of us, this is a normal mode of operation. I can no longer count the number of routes that didn't quite make it past the sketch and first baseboard or two. The good thing with virtual railroading and modeling is we can do this without wasting anything but a few electrons and some time. Over the past two years, I have hit on a somewhat successful fictional route creation method. It's not necessarily what I would call earth breaking, but it works quite well. We've all used DEMs for routes mostly for prototypes and for fictional depictions of prototypical routes. This gives us a great base to with and it surely beats hand sculpting terrain especially with our fat-crayon like tools we have in Surveyor. Working with a prototypical route can be difficult especially if we know the area. I've run into this a few times, particularly when working on my own area. I find that I can never get it right. Working on a fictional route is a bit easier, but then again you've got that same stigma of getting things right because we try to match the topographic map or base images. What I'll be discussing here is a bit of everything from totally fictional to prototypical rolled into one.

What I have done, which I suppose is a variation on this theme, is to find other route possibilities where no rails were ever laid. George Fisher actually did this with his Gloucester Terminal and this what gave me the idea to explore this a bit deeper. I've recently expanded his route a bit farther by a few miles east and west quite successfully. There are many places in this world where there could have been a rail line, but for some reason the city or town was bypassed, or the line was abandoned before it was completed. This is where we can come in and build a route where none has existed before. My first solo foray into this was the Bristol to Sandy Point line on my old Enfield and Eastern, a route I actually started in 2003. I noticed that the landscape, just south of what is in reality Bangor Maine on this DEM, had the look about it that it could actually have had a rail line. A look at the Google image, which was pretty poor at the time, revealed nothing. The old topographic maps showed nothing but roads, but the landscape had that possible railroad grade look.

At this point, I took the old Fishlipsatwork DEM, with TIGER lines, and did a bit of walking. I got down at ground level and did some viewing, surveying the landscape, I suppose we could call it, to find the best route or possible route for a railroad. There were quite a few steep hills along the river. A few came right up to the shoreline on one side, but the opposite side was smooth and flat. I made note of this and placed some tall trees as markers to plot out my route. I noted where bridges were to cross and where I would have to make some cuttings. I suppose this is how it's done or was done in the old days.

I then started my track work with the connection with the prototype line heading into Bangor, which I've called Bristol. I named this Sandy Junction, and then laid track along the river. Some of the initial plan didn't quite work as planned, but I was able to revise this as I went along. As I crossed the actual roads, I put in railroad crossings on some, while others were over bridges and underpasses. This process took a few days for this 8 mile line from Bristol to the end of the extant landscape, and much, much longer to landscape. At the end, I put in a passenger station and a small yard. This took some fiddling, but I was able to get the tracks in between the existing roads without disturbing too much of the original landscape. At Sandy Point, which became the terminus on the branch, I put in a short line down to the riverside to serve a canning industry along with some warehouses, a factory, and some other small industries. The town its self makes up the hills surrounding the station and everything fits in as though the tracks should have been there. I laid my road network in the town area on the actual roads marked on the DEM. In reality this is part of Winterport Maine.

So for those people who are looking for route ideas, I hope you find this useful whether as an expansion to your existing routes or for starting a new one. I've used this technique a couple of times now including a recent addition to my Enfield and Eastern as I build the final many miles to the namesake cities.

John
 
Very interesting John.
It actually makes you think what the challenges for a railroad builder would be, in order to build the railroad to be reliable, safe, fast yet with the least amount of money.
 
There are a few model railways that kick this idea round which could be translated into a "virtual" railway.

Most well known is probably the County Gate etc fictional extension to the Lynton and Barnstaple Railway, unfortunately when I made enquiries of the author he was quite protective of the whole concept. There's also the Dunalastair "network" for North Wet Scotland together with lines which were never built, such as Garve to Ullapool.

Me I'd love to carve out a railway over the Bealach Na Ba to Applecross or maybe the scenic route to Kinloch Hourn. Ultimately a DEM matching Middle Earth would allow us to build Rivendell to Hobbiton or Minas Tirith to Isengard!
 
There is a Middle Eart DEM made for Outerra. I`ll see if I can get hold of the original files!
 
I think this is a good idea... I am making a DEM for the Pennsy Middle division but it will not be 100% proto, way to much effort.
 
Another thing to consider is to find pieces of real terrain in DEM files, and merge them together in new ways. That way you get a route that has a lot of authenticity, but is still distinct and unique.

The biggest question I have is the base elevation of the DEM section you're working with. If the elevations don't match up at the merge points, things will get pretty scarey pretty fast!

RJPugh
 
Oh yes, I forgot something else.

A few issues of Model Railroader featured articles about a layout based on a New England railroad that was started in reality, but never finished. His layout is essentially a "what if" scenario. Another possibility it to take the route of a railroad that was abandoned and entertain ideas on what might have been.

I'm sort of doing that with my track plan, which is set in Pennsylvania. I haven't gotten very far with it, and I'm currently thinking of finding a DEM for northeastern Pennsylvania and using that instead of building from scratch. I figure it will be easier to make my ideas fit the actual terrain than to keep building the terrain to fit my ideas. That approach works fine when you're doing a plywood and plaster layout, but in v-gauge, other options exist.

RJPugh
 
This is an excellent idea which I have used. I have downloaded several DEM (terrain-only routes) by fishlipsatwork and smooz. But they can also be used as add-ons to an existing non-prototypical route under construction as a quick way to get some additional realistic terrain.
 
Another possibility it to take the route of a railroad that was abandoned and entertain ideas on what might have been.


RJPugh

This is what I'm doing with my route. Sadly there is very little information about the railroad online, but thanks to Google Earth I was able to trace 75% of the grade. Then I did the "what if" and expanded the line.

Dave
 
My Iron Mountain line is a Fishlips DEM that I'm going rogue on and doing something different with it as well.
 
Another thing to consider is to find pieces of real terrain in DEM files, and merge them together in new ways. That way you get a route that has a lot of authenticity, but is still distinct and unique.

The biggest question I have is the base elevation of the DEM section you're working with. If the elevations don't match up at the merge points, things will get pretty scarey pretty fast!

RJPugh

TranzDEM can change the elevation although geophil does warn you that it could fail. I have not had any problems doing so even with routes that were not generated with TranzDEM.
 
Another thing to consider is to find pieces of real terrain in DEM files, and merge them together in new ways. That way you get a route that has a lot of authenticity, but is still distinct and unique.

The biggest question I have is the base elevation of the DEM section you're working with. If the elevations don't match up at the merge points, things will get pretty scarey pretty fast!

RJPugh

I've done this with my Enfield and Eastern. I took the DEM and topo maps from Stratham, New Hampshire down to Plaistow, New Hampshire/Haverhill, Mass border and merged them with the Dem and topo map from Brunswick, Maine to Rockport, Maine with a western section going towards Portland. The difference in elevation is about 25 meters and I did a little bit of artistic license to raise up the grade to make up the difference. When the section is walked (ALT+Y) or ridden in Driver, you can't tell that the two areas are mismatched. The name on the topomap, where the rail lines have been blended together coincidently, now reads Boston and Maine Central instead of Boston and Maine Railroad and Maine Central. In this case it looks like I created a merger but didn't call it Guilford Transportation Industries. :)

John
 
The layout I'm working on is based in Pennsylvania, and parts of it have real-world analogues. But the chunk of terrain I'm using - from a DEM file - is actually in Vermont! From an operational standpoint, that map best suited my needs. So I'll be altering that map as needed. Most of the conversion will be simple paint-brush type things: shale and slate replacing marble and granite, different proportions of deciduous to conifer trees, and so on. I think of it as v-gauge "kitbashing."
 
Have you ever had luck in obtaining the Middle Earth DEM files? I've got it in my head that I want to develop railways for there.
 
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