Graphical Construction Glossary >> masonry. >> arch >> Three Centre Arch
Used many times just for looks, but also where a wider clearance heights needed, these are good looking arches that are easy to set out.
The arches seen here (there are four of them:-) on a canal in Amsterdam could quite possibly be either three centre or elliptical. One would have to have a very keen eye to tell the difference. I have used my CAD program to superimpose one on the other and I was quite surprised by the closeness of the results.
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