Or, "Catenary arches can be built with far thinner materials than semi-circular arches."Thank you from all your replies. I am not referring to historic constructions of catenary arches but more comparing a catenary arch with a semi-circular one. For this reason, I can just generally say that "the catenary arch can be built with a very thin material thickness."
That works for me in a way that "thin" does not.One way to avoid "thin" is:
The catenary arch has the ideal form to distribute the internal compressive forces created by the action of its self-weight. Thanks to this it can be built with a very small cross section.
I'm not a structural engineer, but it sounds fine to my ears.Thanks for your feedback. Also, now that we got here. May I ask if the word distribute is the appropriate one?