Underbridge

Help with layout scenics
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Bandit Mick
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Underbridge

#1

Post by Bandit Mick » Sun Dec 30, 2018 2:45 pm

Hello everyone - hope you've all had a modeltastic Christmas. A bit of help please. I model in OO gauge and want to build a single track stone underbridge. I found Melcalfe's dimensions but the arch seems a bit wide at 122mm. Does anyone know the average dimension of the bottom of an arch i.e. across the track? Any help will be gratefully received.

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Walkingthedog
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Re: Underbridge

#2

Post by Walkingthedog » Sun Dec 30, 2018 2:56 pm

You can always adapt the Metcalfe to fit. I guess they are as wide as is necessary to take the track and fit the location. Can’t imagine there is a standard size.
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Bandit Mick
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Re: Underbridge

#3

Post by Bandit Mick » Sun Dec 30, 2018 3:26 pm

Thank you WTD.

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Walkingthedog
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Re: Underbridge

#4

Post by Walkingthedog » Sun Dec 30, 2018 3:36 pm

I have the Metacalfe viaduct which is for single track but I adapted it to take two tracks.

All you need is a Stanley knife and a pack of Elastoplasts. :)
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RAF96
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Re: Underbridge

#5

Post by RAF96 » Mon Dec 31, 2018 2:02 pm

Plasters for the knife wielder Brian, not to clag the cardboard bits together.

I would think size and profile of tunnel entrances, etc were decided locally to accord with the loading gauge as presented by the road angle entering/leaving said orifice, or in the case of a viaduct the load bearing of local build materials versus the gap to be spanned.

No doubt the Engineers had a basic out of the box design which they fettled for local conditions.

Rob

Mountain Goat
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Re: Underbridge

#6

Post by Mountain Goat » Mon Dec 31, 2018 4:56 pm

If you model the B.R. period and have made a bridge or tunnel that is of a narrow nature, adding some "Limited Clearance" red and white boards will add a little realism to the scene.
Enjoying freelance modelling in 7mm narrow gauge Feel free to ask questions relating to the Mountain Goats Waggon & Carriage Works thread.

AustralianLMS
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Re: Underbridge

#7

Post by AustralianLMS » Mon May 06, 2019 10:56 pm

Does this help?

Image

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