North Yorkshire Moors Railway General Discussion

Ive no idea, the steelwork looks ok to to me, but I’m no structural engineer . Ask the OP?

 

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

Simon

 

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.

 

Ah, I thought we were discussing the support steelwork ……

 

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?

 

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.

 

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

 

Well, it did fall down while it was being built, so it's probably extra strong now

 

Most cathederals have fallen down a fair bit, and it's never done them any harm...

 

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

 

First train on to the bridge …. Works train with crane to remove tree root balls from the river bed.
https://www.facebook.com/share/v/17euSMFXwu/?mibextid=wwXIfr

 

They are fairly poor photos, taken at distance, from bad angles, but they are i) just about the only info publicly available on the topic, and ii) they are fairly well assured to be accurate (unless someone thinks it's enough worth confusing the readers here to take to AI to produce 'good' [in the sense of 'hard to distinguish from the real thing'] fakes).

Someone else gets the credit for providing the link to the planning application; I just re-posted the info they dug up.

Someone else posted good images, a week or so back, from a drone 'fly-under', which also shows the missing bricks, etc.

Noel