My Industries (all 10 of them)

I suppose I could add more, but this is what fits comfortably, and I didn't want a layout so crammed that it didn't have a realistic feel. Two team tracks will add to the freight destinations, and I could add a little freight house or fuel supplier near the interchange yard.

Notably absent from this CTC layout is a notable traffic generator, the DuPont Chemical plant in Hixson. In real life it attaches to the CTC right at the junction with NS. It was just too big to cram in. I suppose I could add it somehow as an "off-layout" industry; we'll give that some thought. Airco Gases is also right there. I should really try to work in one of these two ...



So here's the confirmed stuff. The rail traffic percentages are pretty much a product of my imagination, based on some basic logic and research:

GEO Specialty Chemicals
Intake:
• 40% Sulfuric acid in tankers
• 60% coal ash in 3-bay hoppers
Output:
• empty tankers
• empty hoppers

Ergon Terminaling
Intake:
• 70% empty tankers
• 15% empty gondolas
• 15% empty hoppers
Output:
• chemicals, asphalt and fuel in tankers
• gravel, sand in hoppers and gondolas

Signal Mountain Cement
Intake:
• 60% empty 2-bay hoppers
• 20% empty boxcars
• 10% 2-bay hoppers of fly ash
• 10% hoppers of coal
Output:
• ready-mix concrete in hoppers
• bagged ready-mix concrete in box cars
• empty 2-bay hoppers
• empty coal hoppers

Commercial Metals Co.
Intake:
• 100% gondolas of scrap
Output:
• empty gondolas

Colco Commercial Furniture Co.
Intake:
• 60% 3-bay hoppers of plastic pellets
• 15% coil cars of rolled steel
• 20% empty boxcars
• 5% empty gondolas
Output:
• empty hoppers
• empty coil cars
• boxcars of furniture
• occasional gondola of scrap

Chattanooga Brick and Tile Co.
Intake:
• 100% flatcars of brick, pipe and block
Output:
• empty flatcars


Little Katie Baking Inc.
Intake:
• 40% 2-bay hoppers of flour
• 30% tankers of corn syrup and oil
• 10% boxcars of other
• 10% reefers of fruit
Output:
• empty 2-bay hoppers
• empty tankers
• empty boxcars
• empty reefers

Rock-Tenn Co.
Intake:
• 100% empty boxcars
Output:
• boxcars of collected paper fiber for recycling

Dixie Flour Co.
Intake:
• 80% 3-bay hoppers of grain
• 10% empty box cars
• 10% empty 2-bay hoppers
Output:
• empty 3-bay hoppers
• occasional box car of bagged flour
• occasional 2-bay hopper of flour

A few of these haven't been discussed yet: Little Katie Baking is a tribute to my eponymous daughter (now 16 and a musician along with being a devout consumer of snacks). Colco Furniture is a tribute to my son Colin, who needed his own industry. Why is it office furniture? Can't tell ya. I wanted to drag around coil cars and plastic pellet hoppers.

Chattanooga Brick & Tile is a business I used to drive by every day going to and from work. It's right along Dayton Boulevard in Red Bank and an easy industry to model.

Dixie Flour is fictional, and based on a big flour mill here in Roanoke, Va. I figured it would be nice to have an industry that I could make some actual field trips to model. Chattanooga's a little too long a drive.

GEO Specialty Chemicals makes aluminum sulfate for use in the Moccasin Bend Water Treatment Plant. Its reactor uses sulfuric acid and fly ash (coal ash), and the facility is surrounded by a few settling ponds.

Authentic industries

How to pick industries? You can just browse through the hobby store or Web site, picking up pre-made ones like Walthers' Red Wing Milling, Interstate Fuel and Oil and Mew River Coal, etc. etc. There are a lot of great ones out there, if you're willing to settle for off-the-rack.

But what if you really want something authentic and realistic, that reflects modern day rail traffic (some of which can seem sort of mysterious with all these unmarked cars and chemical names)?

I had a really good time doing this. After closely examining my prototype route, I called up the Chattanooga GIS site and started researching the industries that looked interesting and small enough to model with some degree of realism.

Most GIS mapping systems (check out the one for your city or county) have features that let you click on a property and pull up the tax info. This will usually give you a name, sometimes rather cryptic, but enough for a Web search.

One industry I'll be modeling is Ergon Terminaling. A search of this name pulled up a slick, Flash-produced site with a full description of what the company does and where and how, and from this it was easy to extrapolate the kind of rail traffic it would produce. There was even a great aerial shot of the Chattanooga terminal, although I see the site has changed in the few weeks since I looked. Look at the site here.

The following image is from the Chattanooga GIS site, and shows part of the CTC that will be generating freight traffic on my layout. The area is in actuality known as Moccasin Bend:



Signal Mountain Cement is highlighted at the top, at one of the extreme ends of the line, and highlighted at the bottom is the area along the river where Ergon Terminaling and a barge-loading facility for Commercial Metals (a scrap recyler) are located. Clicking on these parcels on the GIS site brought up the ownership information and kicked off the research.

Now here's a close-up of the Ergon/Commercial Metals areas:



Note the branchline proper, over on the right hugging the hillside. My Ergon and Commercial Metals will be much abbreviated, of course, but you can see how incredibly useful this information is when building models. Just to the south of this area is the little GEO Specialty Chemicals plant, which produces aluminum sulfate for the nearby Moccasin Bend wastewater treatment plant. I'll be modeling this as well.

Next post will be about the industries I have chosen to model.

The real thing, in Hamilton County, Tenn.

The big honking image above (click on it for the full-size view) is a capture from Google Earth showing the actual CTC route all the way from the current NS line down to the Tennessee River in North Chattanooga. The route is currently served by a pair of EMD MP15 switchers that spend the night in the Manufacturers Road area and run freight out to the NS main line, over Tenbridge and into DeButts Yard. Here is a picture of the paired switchers pulling a consist across Tenbridge:



The image above is from railpictures.net, an incredible, searchable database. You can search by state, roadname, locomotive model, you name it.
Obviously, you would need an empty Wal-Mart building to model this to scale. So I have condensed it in every possible way. Capture the flavor; that's all you can hope to do.
The Web makes model railroad planning a joy. You can use Google Earth and Google Maps to look at your routes in detail, and then use county and city GIS sites to plan your industries. I'll discuss this later.

The track plan

I experimented a lot on my laptop in RailModeler.

The first concepts were for HO, and I tried mightily to squeeze in everything I wanted:


But when I made the leap to returning to N gauge, things got a lot easier.

The first N concept was a huge, hollow oval with a swingable Tenbridge section for access, and a branchline intertwined along one side. I never liked the idea of the bridge/gate, however. Too easy to damage, and just too much of a pain to negotiate over and over again. I made several track plans based on this and it just never fired me up:


So I moved to a dogbone with a branchline coming off on a parallel peninsula:


After some tweaking and rearranging to maximize scale distances, ease of access and realism, I finally came up with a dogbone about 22 feet long, with a blob on either end. Off of one blob extends a long peninsula, paralleling the length of the dogbone and making the whole layout into a kind of deep, skinny walk-in U. This is what I am building:

The NS-CTC interchange yard is located at the middle of the dogbone, just "south" of the Tennessee River, where the north and southbound tracks are necked close together to cross a four-foot-long, double-track Tenbridge. Yes, this fictional yard is is on the other side of Tenbridge from where the CTC branches off.

But I sort of like that. In real life, you see, the industries in North Chattanooga are served by trains put together in Chattanooga's DeButts Yard. On the other side of Tenbridge. Real-life traffic to the branch crosses Tenbridge, too. I'll just be using a little interchange yard instead of NS' DeButts Yard, which is, er, a little out of my league to model!

So the CTC train leaves the interchange yard, crosses Tenbridge on the main line as the great blue herons go flapping and squawking away, and veers off the main line on the other side to head for Red Bank. (I'll post a bigger, better track plan later.)

Now, this is where the long peninsula at the bottom of the diagram comes into play. The branchline goes down the whole length of it, serving a few industries and passing through Red Bank, then curves around the tip to travel down the whole other side. The peninsula is divided down the middle by a view block.

The strips of usable real estate on either side are not huge -- about 17 inches wide -- but in N scale that gives room for a lot of industrial activity. The branch serves riverside industries in this final stretch, and terminates, as it does in real life, at Signal Mountain Cement.

But what does this region look like in real life, anyway? Not very much like my abbreviated version. That's the subject of the next entry.