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		Basics of building with Arches, Vaults and Cupolas (SKAT)
			(introduction...)
			Acknowledgments
			Arches, vaults and cupolas
			Tradition, present and future
			Arches, vaults and cupolas
			Advantages and possibilities
			Arches and their uses
			Vaults
			Cupolas
			Uses of vaults and cupolas
			Development projects
			Building market
			Key questions
			Recommendations
			Building options and architectural/engineering design
			Building materials
			Execution
			Tools and skills
			Professional training
			Project management
			Select bibliography

Vaults

Forms of vaults

There are a great many forms of vault. The simplest are barrel vaults which in fact consist of a succession of identical arches. Barrel vaults can have steeper or nether profiles: semicircular, segmental, ogival. etc. The catenary vault is very common as its form gives maximum stability for a minimum use of material.

Combining two barrel vaults with the same profile allows two other types to be defined: the "groined vault" and the "Dominica! vault". By prolonging one of the two barrel vaults, the "Dominica! vault" becomes a "trough vault". Combining barrel vaults with different profiles forms a "lunette vault".

A "Dominica! vault", the ribs of which are rounded in the form of cones starting from the corners, becomes a "squinch vault". Similarly the "trough vault" can evolve into a "boat vault".

Figure