Staging Yard constraints & construction
Now that I've shared my track plan, I'll post some information about the layout build so far, and in the next few days hopefully a few more details of areas that I plan to build.
As with any layout design, I've had a list of givens and duthers that I had to work around. One of the biggest ones was that I had to make sure I had a fully functioning garage to park the car in for storage and repair projects. This made designing the staging yard a bit challenging as I wanted to get as many tracks in without losing storage space, or even operational aspects.
Another given was that the layout was going to be at least 36". I had built my previous garden railroad at ground level and quickly realized that it was not the ideal height. I had previously seen a outdoor railroad that was constructed using a revolutionary technique. I'll give more examples of the type of construction I used for the outdoor portion in another post.

Another given that I had to deal with was the slope and topography of the yard. All of these constraints made it necessary to survey the yard to figure out grades, layout heights, and general measurements.
Looking railroad east in the area of Redmond

Looking railroad west in the area of Redmond. You can really see the slope of the yard in this photo. The yellow line in the photo is a string marking level line.

Initially, I thought about making the whole 16' of staging yard a complete sliding drawer like I've seen in smaller scales, but quickly threw that idea out as it wouldn't allow switching moves to take place, and it would be massively heavy full of rolling stock.
As a result, I ended up with the design I posted above where I have 4 staging yard tracks with a transfer table on the far end to allow run around movements on 3 of the 4 tracks.

At the layout end of the staging yard, I added a few short tracks that allow for caboose or locomotive storage. The entire thing isn't the most ideal length, but it maximized the amount of room I had available. I also cut down the minimum turnout size to #4 & #6 (the outdoor portion has #9 like the prototype) to gain a few more inches of room on each track.
The height of the staging yard was also predetermined (and thus made it necessary to have the 4% grade). I knew that in order to maximize the garage space for the car, kids toys, and general storage I had to store as many tools under the staging yard.
Thankfully, I had a few large metal drawers, and some free kitchen cabinets I found on Craigslist. The two cabinets stacked on top of each other measured 43". I measured my tablesaw with the fence attached, and it was just under 43". This would allow the table saw to slide under the other portion of the staging yard, clearing up more space. Using a combination of these materials, and some 2x4 framing, I created a 2'x 16' table that was the base for the staging yard.


On the garage door side of the staging yard, I built a 1 track transfer table using drawer slides.
The transfer table is 4' long so it fits 2 50' pieces of rolling stock or a matched set of locomotives. I gained substantial amounts of room by not needed turnouts on this end.
After the staging yard was built, I increased the storage capacity even more by building a series of shelfs. These also run a majority of the 16' length.
