Graphical Construction Glossary >> masonry. >> arch >> Three Centre Arch

Three Centre Arch
An arch based on two equal smaller arcs at the abutment-haunch area blending into a single larger radius arc arc at the crown. Also know as a Basket Handle or Anse De Panier.
Elliptical Arch
An arch based on the ellipse form.

three centre arch sketch of setting out

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.

three centre arches in amsterdam

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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