Poured-in-place concrete viaducts

In my cast in situ viaduct i have used 12 inch to the foot scale galvanised track circuit bond wires as reinforcement. Luckily i have an understanding boss who doesn't mind a few going missing for the cause..
 
It's a shame they are so expensive. 9/32 taper pins are around 50 pence each now. It costs around £7 to bond out a pair of fishplates.
 
Not sure if it was my plea that got us the secret to those superb Viaducts. Whatever so glad that the cat is out of the bag and I think that I may give this a go.

Would be cheap enough to get Expanded Polystyrene in 8x4 from your local friendly Builders Merchant or Wicks do it too. Postcrete poured in dry then wetted in say a few inches at a time would probably work well. It goes off in around ten minutes ready for the next batch of Postcrete.

Will it work? Big question mark, will report later when a I have a go.
JonD
 
Very expensive using Postcrete!
I know there is no mixing, and pretty strong / fine texture, but..
 
Having seen the video (most impressed) and seen the method of construction, it reminded me of a building method I'd seen on the Grand Designs TV programme.

This was polystyrene hollow building blocks (which slotted together) and were filled with concrete in "lift" levels. Too high with the blocks meant there could be distortion. A novel re-enforcing was the use of large stainless steel staples mixed in with the concrete.
 
Very clever:thumbup::thumbup: but somewhat stark in appearance and would not suit my garden or railway. I also wonder where the garden ends and the mountain side begins, which could make his viaducts unpopular with some people.
 
PhilP, yes I get what you say about cost of Poscrete. However there are ways of reducing this. Perhaps by use of Bricks as can be seen in the pics or even Plastic Drainpipe inside each Pier filled with Ballast well tamped down. This would make a good central core and reduce use of Postcrete somewhat. Note that 'Ready Mixed' Concrete was used by the builder. This is not cheep either. There a real prospects here for easy build Viaducts as can be seen by the Vid and pictures. I look forward to experimenting or to see if anyone in the Forum has a go.
JonD
 
LNERGE said:
In my cast in situ viaduct i have used 12 inch to the foot scale galvanised track circuit bond wires as reinforcement. Luckily i have an understanding boss who doesn't mind a few going missing for the cause..
Click to expand...

Now there's and idea:bigsmile::bigsmile::bigsmile:
 
That was a typo on my part! Bruno started building in 2012, not 2013
 
mrcheddar said:
That was a typo on my part! Bruno started building in 2012, not 2013
Click to expand...

Oh, a slacker then :rolf:
 
Bruno is building up the hill. Soon the tracks will meet behind his house.
August1.jpg


August2.jpg


August3.jpg
 
I visited Bruno up in the Alps again last weekend. He can now run training all round his house. The series of viaducts are impressive! The winter does not seem to have affected the structures, they are as solid as last year, with no cracks or bits broken off.

My friend Jens (Yens) was also there, at the same time I was, and made a cab ride video of the whole line. Enjoy...

http://youtu.be/64FmHrWp6h4?list=UU0izBLmnUGyH1WuPopp6zTA



Edit: I can't figure out how to get the video to play in the post?
<iframe width="560" height="315" src="//www.youtube.com/embed/64FmHrWp6h4?list=UU0izBLmnUGyH1WuPopp6zTA" frameborder="0" allowfullscreen></iframe>
 
Absolutely superb engineering a real masterpiece and it shows that no matter what space or terrain you have anyone can have a garden railway. Five stars to you. :)
 
My vertigo has vertigo [e]300[/e]
 
Madman said:
My vertigo has vertigo [e]300[/e]
Click to expand...

I did think you would not want a derailment from some of those viaducts..

Seriously impressive lumps of concrete though!! ;) ;) :D ;D ;D
Wonder what the mountain is made of?? ::) ??? ;) :D ;D ;D
 
Nice to see it again - thanks for posting the video link. Obviously there are plans for more trackwork so I hope you will be able to keep us posted :D
 
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