Concrete trunking

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Jimmy77
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Concrete trunking

Postby Jimmy77 » Sat Mar 30, 2013 6:17 pm

Hello chaps,

Was on the way home from Kings Cross today, between Richmond and Twickenham I noticed some of the concrete trunking was in either an S shape or a figure of 8 shape... just wondering what the reason was...

Cheers,

Jimmy
My N gauge layout in the workshop
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knottinbotswana
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Re: Concrete trunking

Postby knottinbotswana » Thu Apr 04, 2013 7:05 pm

Somebody with more railway engineering knowledge than me will likely be along shortly, but having recently installed some largish electrical cables (6" diameter) the first thing that comes to my mind is cable slack.

Were they close to junction boxes or some other power related installations?

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Bufferstop
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Re: Concrete trunking

Postby Bufferstop » Thu Apr 04, 2013 7:32 pm

Hi Jimmy, do you mean 8 or S shaped in plan view or cross section?
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Jimmy77
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Re: Concrete trunking

Postby Jimmy77 » Sun Apr 07, 2013 6:16 pm

Hello,

Yes they were quite close to junction boxes, I think you might be right with the cable slack thing. It was an S shape in plan view, similar to the British Steel "S" logo, but connected in the middle. There was nothing else around to suggest it was being routed to avoid something.

Cheers,

Jimmy
My N gauge layout in the workshop
Layout

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Bufferstop
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Re: Concrete trunking

Postby Bufferstop » Sun Apr 07, 2013 10:04 pm

I've seen just about every kind of concrete, porcelaine, metal, fibre and plastic trunking anyone ever thought of putting in the ground. I would suggest that somewhere very close to the S shape the cable went into some kind of equipment that needs to be lifted to access it's contents. The S shape would provide the slack needed once the cable was lifted from the trunking.
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