Vault
an arched roof; a concave roof, or roof-like covering, hence applied figuratively to the sky. In architecture, an extended arch covering an apartment so constructed that the stones, bricks, or other material of which it is composed sustain and keep each other in their places. Vaults are of various kinds; a cylindrical vault has a semi-circular ght angles. arch; a covered vault has an arch which springs from all sides of its plan; a places. Vaults are of various kinds; a cylindrical vault has a semi-circular vaults intersecting at right When a vault is of greater height than and when of less height surbased. A rampant vault is one which springs from planes not parallel to the horizon; the vault placed over another constitutes a double vault. A conic vault is formed of part of the surface of a cone, and a spherical vault of part of the surface of a sphere. A vault is simple when it is formed by the surface of some regular part of the surface of a cone, and a spherical vault of part of the surface of more than one surface of the same solid, or of two different solids.