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Arch =
A construction that spans an opening; usually
curved; often consists of wedge-shaped blocks
(
voussoirs
) having their narrower ends toward
the opening. Arches vary in shape, from those
that have little or no curvature to those that are
acutely pointed.
Types
=
Acute, anse de panier, arriere voussure, back,
basket-handle, bell, blind, camber, catenary,
cinquefoil, compound, cusped, diminished,
discharging, Dutch, elliptical, equilateral, flat,
Florentine, foil, French, garden, gauge, Gothic,
horseshoe, inverted, jack, keel, keystone, lancet,
Mayan, memorial, miter, Moorish, ogee,
pointed, Queen Anne, raking, rampant, rear,
relieving, round, rowlock, safety, sconcheon,
secondary, segmental, semicircular,
semielliptical, shouldered, skew, straight,
three-centered, transverse, trefoil, triangular,
triumphal, Tudor, and two-centered arches.
Ex. = Estrados
In. = Intrados
K. = Keystone
S. = Springers
V. = Voussoirs