Question

Which of the following theory is the most accurate method to design arch?

(a) The thin cylinder theory

(b) The theory of elastic arches

(c) The trial load method

(d) Creep theory

The question was asked in my homework.

My question is from Arch Dams topic in division Arch and Buttress Dams of Irrigation Engineering

Answer 1

Right option is (c) The trial load method

Best explanation: Thin cylinder theory can only be relied upon for rough estimation of dimensions of the arches. The Elastic theory does not take into account the thickness of arch rings and the restrictions at the abutments. The Trial load method removes the above objections and leads to an accurate estimation of the stresses in arches.