Brick arch - with a difference

[tim00]

Some years ago the BDA ( Brick Developement Assn. ) built a twisted arch outside its HQ and issued a "pamphlet" to show how the brickie did it.

I remember seeing an apprentice brickie submitting two (much smaller scale) intersecting, twisted arches for his Advanced Craft Cert C&G. He used re-bar.

 

[mysteryman]

Not exactly the same, but look at skew arched underbridges on early railways. There's an excellent example on the first underbridge out of Llanberis Station on the Snowdon Mountain Railway. How did they do that?

 

[wsdconst]

Ive seen something similar in a Peter cartwright bricklaying book a long time ago and recall him talking about using re bar and squares of steel with a hole drilled in and then a nut tightened on to sandwich each course between two squares anyway hats off to who ever built