Viaduct walls

[Hayfield]

One of my ideas is a small cameo of an elevated track in the East end inspired by the cover photo of a book called "Great Eastern in town and country

I have downloaded the OS map of the area into Templot and formulated a plan, the question being how wide would the viaduct walls need to be from the track in model form please. Its double track going into triple track

Thanks

https://www.google.com/imgres?imgur...2ahUKEwjg7bagmK7vAhURohoKHTJrAVwQMygEegQIARA1

 

[Tony W]

Hi John.
From information I have typical urban viaducts for double lines were usually built to a width of 26' 6" between parapets for straight track. The parapet walls being 18"s thick at track level.
I will scan the drawing and post it here for you.
Regards
Tony.

 

[Martin Wynne]

Hi John,

As Tony says, about 30ft wide overall including parapets, as a round figure. Assuming straight track at 6ft way. Obviously wider for triple track.

Handy hint -- to represent viaduct parapets in Templot, use the platforms function and change the dimensions accordingly. I will add an option to set typical viaduct parapet dimensions automatically -- thanks for the idea.

Here's double track on a masonry viaduct. As usual the photographer waited until there was a train in the way before taking the picture. I shall have words with him, and as it's not far away he may go back and take another.

cheers,

Martin.

 

[Phil O]

Hi Martin,

I don't know whether or not it's the camera, but it looks as if there are a few dipped joints, especially the first one north of the crossing, not helped by the fact that the rodding run passes under it.

 

[Hayfield]

Thank you both for the quick replies, I now have something to work on

 

[Tony W]

Here is the drawing I mentioned.

Incidentally, do you have the book posted in your link?
Tony.

 

[Hayfield]

Here is the drawing I mentioned.
Incidentally, do you have the book posted in your link?
Tony.

Thanks for the drawing, and yes a super read with a superb map of the inner London section

 

[Tony W]

Thanks for the drawing, and yes a super read with a superb map of the inner London section

It most certainly is. The map is amazing together with a wider view of the cover picture.
Indeed, the whole series of three books can be highly recommended if you are interested in old GER area.
Regards
Tony.

 

[Martin Wynne]

Handy hint -- to represent viaduct parapets in Templot, use the platforms function and change the dimensions accordingly. I will add an option to set typical viaduct parapet dimensions automatically -- thanks for the idea.

Now done:

Note that this doesn't do anything you can't do now. It is simply a convenient shortcut to switch the platforms on and set the dimensions suitable to represent a parapet wall (92" from track centre, 18" wide).

The length and position can then be adjusted on the platforms dialog.

In the next program update.

cheers,

Martin.

 

[Hayfield]

Thanks very useful

 

[Paul Boyd]

I would have found this very useful not long ago - I overlaid two templates with different width trackbed edges instead. It did the job!

 

[Daifly]

Grrr.. I've been measuring and drawing off the track template ready for cutting the new upper trackbed!
Dave

 

[Hayfield]

I cannot find the parapets as its not yet populated itself in my REAL drop down box, also cannot find check for updates

 

[Martin Wynne]

I cannot find the parapets as its not yet populated itself in my REAL drop down box, also cannot find check for updates

@Hayfield

Hi John,

I wrote:

In the next program update.

I haven't released it yet.

I post details of upcoming changes in advance so that there is time for feedback and suggestions.

To get a parapet wall at present, go to real > platforms...

Set the front edge spacing... to 92". Set the width... to 18". That's all the new menu items do.

cheers,

Martin.

 

[Hayfield]

@Hayfield

Hi John,

I wrote:



I haven't released it yet.

I post details of upcoming changes in advance so that there is time for feedback and suggestions.

To get a parapet wall at present, go to real > platforms...

Set the front edge spacing... to 92". Set the width... to 18". That's all the new menu items do.

cheers,

Martin.

Thanks

 

[Hayfield]

New Martin Street project is slowly moving on and I am trying to get to grip with things

Templates with the parapet walls have been printed, stuck on card and cut out. I can now arrange the plan on the baseboard I have

I made a sketch of the roads and buildings on A3 sheets, though the buildings will be a representation rather than scale models (its all gone now anyway
Today a laser cut low relief 3 story warehouse (scratch aid kit) arrived I was so pleased with it I have just ordered a 2 story one, these along with others will be cut and shut to fit the space available, once I get an Idea of sizes and shapes

Just returned from the model shop with a Wills bridge abutments and parapet walls kits. I need to get an idea of the viaduct height and size first, then I can see how the warehouse kits interact with it, plus I have a few lorries, bus and cars to populate it

Next question(s)
Looking at the Mean Streets chapter in the Great Eastern Town and Country book the ballast on the elevated sections seem in most places to be very shallow, with the sleepers and timbers being very prominent, was this normal practice ? also there seems a lack of cess strips.

Any thoughts please

 

[Martin Wynne]

Next question(s)
Looking at the Mean Streets chapter in the Great Eastern Town and Country book the ballast on the elevated sections seem in most places to be very shallow, with the sleepers and timbers being very prominent, was this normal practice ? also there seems a lack of cess strips.

Any thoughts please

@Hayfield

Hi John,

Deep ballast is not used on viaducts because it is very heavy and just adds to the weight the arches must support. However there should be sufficient ballast to bed the sleepers and allow the track to be packed level. It should look reasonably normal from above if it is a running line.

There will be drains under the ballast leading to outflow pipes in the viaduct walls, but there isn't room for a safe cess alongside the ballast. Instead of a cess, viaducts often have refuge areas for track workers, usually above each pier:

cheers,

Martin.