New Project - 140' Thru Plate Girder Bridge - Final Part

Over the last few days, I manage to finish the 140' Bridge install and get trains running again.

Next project clean up layout and room

June Update

Here my monthly update...Not a lot going on been busy with work and other TT scale projects, but I did do a little painting on both the bridge and loading platform and some attempt at weathering on the bridge.

Loading Platform

 
Bridge

New Project - 140' Thru Plate Girder Bridge - Bridge Shoes

Sorry for the lack of progress, but I been focusing on other project and my drafting service business new client back to working 30 hrs a week.

I did manage to get some bridge shoes designed and 3D printed.

New Project - 140' Thru Plate Girder Bridge - Part 7 Abutments

A little work over the holidays, applied first and second coat of texture to bridge abutments. Initially coated abutments with a cheap gray primer rattle can paint from Walmart. Then was a mixture of lite-weight joint compound, water and black/tan paint to a consistency of thick tomato soup.

Second coat applied today

Once dried, I will sand hi-points and if needed a third coat.

Also started a little ground work in area behind bridge

On another note, I created a new blog for my interest in TT Scale modeling (1:120) http://ttscalemodeling.blogspot.com/ , so if your interested in TT Scale come follow me there.

New Project - 140' Thru Plate Girder Bridge - Part 6 Abutments

So the polystyrene abutments did not work out and after two other fail attempts. I final got a pair of bridge abutments I like.

These are laser cut from 1/16" taskboard.

Need to primer them and determine finish for them. Also need to make some bridge shoes.

New Project - 140' Thru Plate Girder Bridge - Part 5 Install

After a month of not working on the layout. Today I got back at it.

I bit the bullet and cut the track to remove the old CV bridge.

Then I remove some of the inclines on both sides to lower the grade up to the bridge. Also while the bridge is out of the way. I cut away and shape the ceiling tile behind the bridge. Something I forgot to do last time.

Here  the bridge temporary in place.

The bridge track is CV bridge ties left over from another project with Atlas code 55 rail.

Start making some simple concrete bridge abutments by gluing some 0.1" white styrene together. Once they dry I can start shaping them.

Applied gray primer to the bottom side of the bridge too.

I have not decided on a final color yet, leaning toward silver/gray.


See Ya...

New Project - 140' Thru Plate Girder Bridge - Part 4

Tomorrow turn into 10 days. My back started bothering me again and a trip to the doc plus the medicine prevented me from doing anything for the last 10 days.

Today I got back out to the train room and pickup where I left off.

First up was finishing installing the vertical leg to each angle position.

Next to add the side girders to the base structure

Flip bridge over an install the bottom cross bracing

At this point if you wanted a ballast deck you would need to install the floor plate, as the next step would prevent it's installation. I did cut one to see how it would look, but I made an error on it and it did not fit.

Moving on to adding the top flange to the inside web plates and the top and bottom cap plates.

I did not cut enough cap plates for the bottom of the girders, so will need to cut them and install before painting.

So that is basically the completed bridge less paint, weathering and lettering. If I do decide to market this as a kit. I will need to go back to the design stage to make some adjustments and two changes.

 

New Project - 140' Thru Plate Girder Bridge - Part 3

Today , I got back to working on this project. I make the needed adjustments in the parts and laser cut out the new parts.

Above are the new parts. below I will start with gluing the lower flange onto the web piece.

Next the top flange

Once the top flange is in place and glued. Then I work the each end. I like to bend the piece around the corner a couple times so it starts assuming the round corner shape before trying to glue it.

Two girder are completed to this stage with their flanges in place

Next is to insert the overlays that provide the angle detail

Completed the overlay stage

The over lay stage is where I had issue last time, initially my thought was a dimensional error or humidity, but today I tried a different approach to each girder and discovered it was the glue decreasing clearances. The one glued with ACC when together the best. I am going to adjust the dimension a little more to account for this.

Next up is the final pieces and the most tedious part, adding the vertical leg to each angle position.

The vertical pieces

First five installed

So that it for today, going to finish the remaining pieces tomorrow.

 

New Project - 140' Thru Plate Girder Bridge - Update

This project has taken one step forward and two backwards.

Over the weekend I injured by back, so I have not been able to do much.

Late yesterday I attempted to start one of the girder beams but screwed it up.

Today, I started on the second one, but discovered that there are some errors, so back to the drawing board on the girders.

Here a photo of the parts before I initially started yesterday.

More to come......