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Accucraft Ruby, Accucraft 1:20.3
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Discussion Starter · #21 ·
Haven't had a chance to set any more posts since my last update. We had a heat wave and that sparked a fury of activity on other aspects of the rest of the yard since my wife and kids spent more time outside, my hunny do list grew. And the power company dropped 3 trees in my yard for me, so I had those 20" trunks to buck and stack off the grass.
I don't know how much it weighs, but an 18" long by 20" round white pine log that is still green, is more than I can lift.

Tonight I was able to do some destructive yield testing on the fasteners I plan to use on my decking.
Plant Water Wood Rectangle Grass


This is a general layout of my mainlines. They will be spaced 8 inches between centers. The deck will be 16 inches wide total. The heavy pencil lines outside the track denotes that dimension. I have considered reducing the amount of space from the outside track to the edge, but I keep having terrible thoughts of a consist having a derailment and tumbling to the ground.... And 16" is a good number when most my lumber options come in dimensions of 4 ft multiples.

Plant Wood Line Cemetery Cross


I centered my body weight on the"edge" of the board to see if the machine screws I used would take the pull. They held.

Wood Plant Grass Line Groundcover


When I stood outside the dimensions I could start to hear the sounds of impending failure.
I am confident that my system will work especially since I plan on having sister boards to help distribute the load to neighboring boards.

I need a good few days to finish my posts then I'll get my decking material.
 

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Accucraft Ruby, Accucraft 1:20.3
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Discussion Starter · #23 ·
Tyler - I heard you on Model Rail Radio podcast recently. Any further progress on the construction?
Thanks! Great to know there are other large scale people listening.

I haven't taken the picture yet but I have finished setting my PVC posts. I have a 12 foot gap at the far end of my garage that I am building a 10 foot drawbridge for. I hope to finish the structure for that this weekend so next week I can start my decking.

My work season is starting and I'm hoping to get at least one loop down before the end of next week, since free time will be imaginary until September.
 

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I haven't taken the picture yet but I have finished setting my PVC posts. I have a 12 foot gap at the far end of my garage that I am building a 10 foot drawbridge for. I hope to finish the structure for that this weekend so next week I can start my decking.
Glad to hear you're still making progress. Post more pictures when you can.
Thanks,
Jeff
 

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Accucraft Ruby, Accucraft 1:20.3
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Discussion Starter · #25 ·
We had a storm go through, my wife called and said a branch landed on my railroad. I replied that at least it's not finished, I can easily replace some structure.
Wood Outdoor bench Grass Plant Groundcover


She admitted that she was just kidding to see if I would get home faster.

I finally have pictures of all of my PVC posts in the ground with the fiberglass beams. Every post is the same height with the aid of a rotary surveyor laser. The posts are not in cement. It bears my weight with out moving. But a mallet will allow me to pound them deeper, slowly. And a rope and implement jack allow me to raise them. Correcting for height changes in spring, if any, should be of minimal effort.
Plant Tree Land lot Woody plant Shrub

Plant Tree Building Natural landscape Land lot

Plant Tree Natural landscape Land lot Fence

Plant Tree Natural environment Natural landscape Wood


All curves are standardized at 15 foot radius, even the S-curve along the woods.

I started visualizing what the deck will look like once I start attaching it.
Table Plant Wood Outdoor furniture Grass

Wood Rectangle Wood stain Road surface Outdoor furniture


The top surface will be about 16 inches wide with 8 inches between track centers.

Plant Tree Shade Land lot House

Plant Property Tree Land lot Grass


This is where I plan on building my drawbridge with a 10 foot span so that I can get equipment from the driveway, along the side of the garage and into the inside of the layout. In case I need a lift to trim trees or a backhoe to make a pond/Mountain.

I've stated construction of that bridge. It won't be a scale replica or pretty model based on prototype. It will be functional over form. I will get those photos up as I have time.
 

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how far down into the dirt are your posts, and what is the frost line depth?

Are the post ends cut square or angled?

Also, I get how you can pull the posts up, do you intend the bash on the track to lower them?

Greg
 

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Accucraft Ruby, Accucraft 1:20.3
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Discussion Starter · #27 ·
how far down into the dirt are your posts, and what is the frost line depth?

Are the post ends cut square or angled?

Also, I get how you can pull the posts up, do you intend the bash on the track to lower them?

Greg
Posts are 60 inches long with 22 inches target height. 38 inches dept +- 4 inches due to ground elevation changes.

Frost depth is about 3 foot in this area. But depending on recent weather my ground water table is about there too. The white fence in the background is about 3 winters old now, not moving yet. Same depth.

Posts, fence and track, are a hollow square cut.

While I may be neanderthal in some respects to problem solving, I have many options available to me. My initial attempts will include a 2x4 laying on the deck between the mainlines over the posts and using a rubber mallet on the 2x4. If that proves fruitless, then the worst case is removing the structure in four or five foot sections. They simply rest on the posts semi socketed, with about 4 screws per span holding them from voluntarily lifting off the posts. As of yet I have not used any screws to secure anything yet. Once the decking is on, if they don't want to move, I may not secure the beams to the posts at all.
 

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This is fantastic. I took about 8 to 10 minutes looking at all the photos you laid out here.

This layout reminds me of when you see some freeway decks in the city. They are not very common but I am pretty sure at some point I have seen massive concrete Y-shaped posts supporting two directions of traffic in inner-city freeway spots, particularly if its some kind of ramp or something but my recollections are vague.

I can envision your railroad... a T-shaped elevated railroad where there is one direction of rail traffic on each side of the 16 inch wood deck.

You talked about questioning the support strength of your deck... I did not remember if or what you said above about how the wood deck beams are fastened to your fiberglass beam, but of course, the integrity and load capacity of the two railways and how it performs when a heavy locomotive is travelling down one side of the railway will depend wholly on how you are fastening your 16" wood deck to the fiberglass beam and how the beam is fastened to the posts. A wide array of various joint "things" exist out there, many of which you might get at some home improvement or lumber companies?

I wonder what speeds this railway with its 15' turns can support. I could imagine you just might get to run a train at 80 inches per second?

The distance between rail lines on your layout is 8" and if I recall youll have a wooden beam separating traffic. Either way, this distance between is sufficient so that you wont have two heavy locomotives collide with a 15 % overlap offset head on collision with a closing speed of 140 inches per second. Such a collison would be a pity.

Have you considered the possibility of constructing a guardrail - perhaps a 2.5 inch-tall cable type where you have intermittent metal dowels with a hole running through them going the length of each side of your 16" board? The cable is fed through the holes in the small metal posts and then tightened at each end and is very sturdy. It would be identical to the cable-made guardrails you see along some stretches of interstate. This would be mostly a cosmetic novelty purpose, but it would indeed prevent a nice locomotive from careening 175 scale feet over the edge should a derailment occur.
 

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You just read my response to your project above this comment ..

And You have read about my dream yard layout but for right now, I got this Janky causeway inside my apartment. It’s several inches off the ground and even though it’s temporary in construction and not mounted down, it seems to hold together perfectly as the train travels around

Hood Automotive tire Motor vehicle Car Automotive design
 

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Accucraft Ruby, Accucraft 1:20.3
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Discussion Starter · #31 ·
How are you attaching the square pieces to the round PVC upright?
In one of my earlier posts I detailed with pictures how I use a hole saw to put half round notches in the bottom at each end. I originally wanted the posts to socket in, but the posts are wider than the beams. Right now there are no fasteners. The beams are just set on the posts with half round notches. Eventually I will screw the beams to the post. The screws won't bear any weight, just prevent them from lifting off.
 

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Accucraft Ruby, Accucraft 1:20.3
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Discussion Starter · #33 ·
Just an update.
Like I've explained in other posts, my career in Agriculture doesn't allow much free time to work on anything from June through the beginning of September. But this last weekend I did get a chance to enjoy the backyard layout with the kids helping me with my construction, where I left it over a month ago. This fall I'll have to retrace a few steps. Its all worth it.

Here is a video of my daughter helping.
 
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