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North Yorkshire Moors Railway General Discussion

Discussion in 'Heritage Railways & Centres in the UK' started by The Black Hat, Feb 13, 2011.

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  1. Sheff

    Sheff Resident of Nat Pres

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    Ive no idea, the steelwork looks ok to to me, but I’m no structural engineer . Ask the OP?
     
    Last edited: May 19, 2026 at 1:43 PM
    Sheff, May 19, 2026 at 12:41 PM
    #10541
  2. goldfish

    goldfish Nat Pres stalwart

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    Some strong statements being made based on two pretty cruddy photos taken at distance from poor angles…

    Simon
     
    goldfish, May 19, 2026 at 12:42 PM
    #10542
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  3. Breva

    Breva Part of the furniture

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    Thanks - I went back 250 posts, but didn't see that.
    Must have dozed off for a minute...

    Falling bricks is often caused by water/freezing, due to failed water proofing. We had that as an issue on the GWSR.

    Might want to deal with that first.
     
    Breva, May 19, 2026 at 12:56 PM
    #10543
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  4. Sheff

    Sheff Resident of Nat Pres

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    Ah, I thought we were discussing the support steelwork ……
     
    Sheff, May 19, 2026 at 1:40 PM
    #10544
  5. Bikermike

    Bikermike Well-Known Member

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    The statement of works that Noel linked to (about 10 pages back) talks about cracks and voids in the brickwork and use of resin-bonding to repair. (And re-waterproofing from the top as well as vegetation and ballast removal, and replacement of the tie rods).

    It said something along the lines of the bridge having no or limited deformation, which sounds positive.

    I wonder if the propping is therefore to reduce flex to allow inserted resin to set in it's intended place.

    Seems an unusual structure bridge, 2 outer masonry arches and a central brick arch. I wonder why they did that?
     
    Bikermike, May 19, 2026 at 2:13 PM
    #10545
  6. Breva

    Breva Part of the furniture

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    Probably cost - cheap in the middle, pretty on the outside.

    The problem - to my simple office worker's knowledge - doesn't sound that serious. Re-waterproofing, and repointing, with some brick replacement - that was the issue with Stanway viaduct on the GWSR. Nothing moved, we didn't close.
    Serious would be undercutting of the abutments by the river, or movement.
     
    Breva, May 19, 2026 at 2:32 PM
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  7. Bikermike

    Bikermike Well-Known Member

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    Well, I guess it depends on the number of missing bricks and depths of cavities and what the LIDAR has found. And why the cracks are forming.

    Also your viaduct is getting on for 80 years newer, I wonder if that makes a difference
     
    Bikermike, May 19, 2026 at 2:47 PM
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  8. Breva

    Breva Part of the furniture

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    Well, it did fall down while it was being built, so it's probably extra strong now :)
     
    Breva, May 19, 2026 at 2:56 PM
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  9. Bikermike

    Bikermike Well-Known Member

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    Most cathederals have fallen down a fair bit, and it's never done them any harm...
     
    Bikermike, May 19, 2026 at 3:14 PM
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  10. Steve

    Steve Nat Pres stalwart Friend

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    I’d suggest that the so-called outer stone arches are more to make it look pretty than anything else. The Victorians were fond of decorative features on things that they built
     
    Steve, May 19, 2026 at 4:32 PM
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  11. Sheff

    Sheff Resident of Nat Pres

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    Sheff, May 19, 2026 at 5:23 PM
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