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A recent thread on "balloon tracks" led me to create this post about the construction and function of hidden staging yards on my railroad.   Following concepts in Frank Ellison articles -  the railroad is the stage, the trains the actors, and the timetable/train orders the script.  When not on a run, I’d like most “through” freight and passenger trains to be waiting off stage. - thus the requirement for large capacity hidden staging yards.  To find space for balloon staging tracks I used a layered design approach influenced by John Armstrong, and lessons learned on my prior railroad (see March 2000 MR). 

The first 5 photos show construction of the suspended Pittsburgh Division staging yard.  It is located directly above the Altoona yard and one of the main aisles.  For ease of installation it was built before the Altoona yard bench-work went in. The staging bench-work was built on the floor using 3/4" plywood in 7 sections.  It was then hung one section at a time from the floor joists above by 1/4" threaded steel rods.  Four nuts on each rod made leveling adjustments easy.  3’8” lap plates on the upper surface secure the sections to one another.  With the full structure in place I laid Homasote roadbed and then the track (the Homasote was routed 3/8” where it crossed the lap plates).  With the track and turnouts down, I sheathed the sides of the structure with strips of 3/8" bending plywood (a.k.a. wiggle wood).  It served to hide the trains from below while allowing ladder access for maintenance. 

 

Staging 1Staging 2Staging 3Staging 4Staging 5Staging 6

The Middle Division Staging yard was a lot easier to build as it sits flat on open grid framework – directly below the Horseshoe Curve.  The photo below shows the completed Middle Division staging yard in the foreground, and in the distance is the yet to be connected Pittsburgh Division staging yard loops  Once the Middle Division staging was operational work began on the winding 2.2% Pittsburgh division helper district grade west of Altoona, around Horseshoe Curve, and on the Gallitzin tunnel entrance to Pittsburgh Division staging.    

Staging 7

The photo below shows the Horseshoe Curve being built over the top of Middle Division staging using L girder framing.  The curved stud wall will support a double faced backdrop separating the Curve from the single track Tyrone and Clearfield coal branch.Staging 8

The finished Curve scene.  If you look closely in the foreground you can see the outline of a 2" thick foam lift out panel which provides access to the staging track below.

Staging 9

This photo shows MG interlocking, the Gallitzin tunnel face, and the suspended Pittsburgh Division staging.

Staging 10

Both staging yards on the layout are monitored by occupancy detection circuits and closed circuit video. 

Closing reminder:  if you are going to build a layered railroad carefully plan the construction sequence, and make sure you have provided maintenance access to hidden tracks. 

 

 

Attachments

Images (10)
  • Staging 1
  • Staging 2
  • Staging 3
  • Staging 4
  • Staging 5
  • Staging 6
  • Staging 7
  • Staging 8
  • Staging 9
  • Staging 10
Last edited by Keystoned Ed
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No shortcuts with this amazing project. I bet it's a dream to operate Ed...notice I said operate since this certainly was not built to merely run some trains.

Ed I know you had this house custom built, and likely configured the utilities to benefit the basement environment you'd be spending so much time in. Beyond the obvious heat and A/C, is there dust control?

Bob

One of the guys emailed a question about the setup I used to cut the plywood .  I replied by email and am sharing it with the group. 

The router radius  arm was made with low cost EMT tubing from Home Depot.   A simple plywood bracket was made to attach the router to the EMT.  The pivot end of the EMT was drilled at multiple locations for whatever radii required.  A  fixture with a ¼” bolt was screwed to the Homasote and served as the pivot point.  The plywood was temporarily drywall screwed to sheets of Homasote laying tightly on the floor,  holding everything in position for the cut.  As I recall it took 3-4 passes with a 1/4" router bit to neatly cut through the ¾” plywood.  On the last pass the router bit was set at 7/8”, slightly scarring the “sacrificial “ Homasote cutting base.  As the router was swung a friend followed along with a shop vac to minimize dust in the train room.  I used this approach for cutting plywood whenever a free hand saber saw cut wouldn’t be true enough.  To facilitate operators and visitors movement in the aisles curved bench work was used throughout the railroad.  The last two photos show the approach I used to frame the curved part of the bench work using router cut plywood as a horizontal "control" member.  The Homasote cutting base didn’t go to waste - it was later cut (outdoors) for use as roadbed - scarred face down. 

 IMG_4488routing the plywoodlayout March 2009 026

IMG_0950

Attachments

Images (4)
  • IMG_4488
  • routing the plywood
  • layout March 2009 026
  • IMG_0950
Last edited by Keystoned Ed

Very impressive.Your layout is awesome!! I am working on my own layout and your photos are full of knowledge. Do you have any more  benchwork construction photos? Your track looks very realistic.What brand and colors did you use ,and brand and color ballast did you use.I am just looking for ideas and what some guys use.Any input would greatly be appreciated.

Reading Lines  - I have lots of photos of benchwork construction but they're a little too boring for most to look.  I use a open box style el construction largely built with 1x4 pine or 3/4" plywood ripped to equivalent height.  Cross members are set generally 18-20" apart and as needed the 3/4" plywood sub roadbed is supported on risers attached to the box frame cross members.  Legs are 2x4 bolted slightly inset to the outer frame to avoid people kicking them.  Where the layout is against a wall I lag bolt the frame to the studs behind the dry wall - eliminating some legs and adding rigidly.  I designed the track plan in 3rd PlanIt, and also used the tool to design the benchwork.  The software gave me the length and angle cuts of the ends of the cross members to build the layout with smoothly curving aisles.  The sub roadbed was cut from 4 x 8 sheets of Homosote to a width slightly wider than the ties and curfed so that it could be bent to a radius line drawn on the sub roadbed.  All mainline curves were eased and super-elevated by inserting strips of N scale cork roadbed under the outer edge of the Homasote roadbed.  Increasing stacks of shirt cardboard under the Homosote was used to transition from flat to full super-elevation.  Generally this was done in the easement area of the curve (see John Armstrong's Track Planning for Realistic Operation for more on easements).  On the main line I used AtlasO code 148 flex track, and on the branches a mix of Old Pullman (no longer made) and Micro Engineering code 125 flex track.  The track was over sprayed with Krylon camouflage brown paint before ballasting.    Ballast was purchased from Smith and Sons in bulk quantity in several colors.  Turnouts were largely hand laid using Right-O-Way castings (great products initially sold by Lou Cross and now offered by Jay Criswell.  

Keystoned Ed posted:

Reading Lines  - I have lots of photos of benchwork construction but they're a little too boring for most to look.  I use a open box style el construction largely built with 1x4 pine or 3/4" plywood ripped to equivalent height.  Cross members are set generally 18-20" apart and as needed the 3/4" plywood sub roadbed is supported on risers attached to the box frame cross members.  Legs are 2x4 bolted slightly inset to the outer frame to avoid people kicking them.  Where the layout is against a wall I lag bolt the frame to the studs behind the dry wall - eliminating some legs and adding rigidly.  I designed the track plan in 3rd PlanIt, and also used the tool to design the benchwork.  The software gave me the length and angle cuts of the ends of the cross members to build the layout with smoothly curving aisles.  The sub roadbed was cut from 4 x 8 sheets of Homosote to a width slightly wider than the ties and curfed so that it could be bent to a radius line drawn on the sub roadbed.  All mainline curves were eased and super-elevated by inserting strips of N scale cork roadbed under the outer edge of the Homasote roadbed.  Increasing stacks of shirt cardboard under the Homosote was used to transition from flat to full super-elevation.  Generally this was done in the easement area of the curve (see John Armstrong's Track Planning for Realistic Operation for more on easements).  On the main line I used AtlasO code 148 flex track, and on the branches a mix of Old Pullman (no longer made) and Micro Engineering code 125 flex track.  The track was over sprayed with Krylon camouflage brown paint before ballasting.    Ballast was purchased from Smith and Sons in bulk quantity in several colors.  Turnouts were largely hand laid using Right-O-Way castings (great products initially sold by Lou Cross and now offered by Jay Criswell.  

Ed, 

You might have mentioned it earlier, but what are the radii of the four tracks of the return loop? 

Thanks, 

MF

The two staging loops each have 5 tracks on 4" centers.  The innermost loop is on a 56" radius.  PRR locomotives ranging up to 4-4-4-4 T1's, 4-4-6-4 Q2's and J1 2-10-4's navigate the hidden curves as well as close coupled full length passenger cars.  Where space is available visible curves are laid to larger radii for reason of better appearance.

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