Arch

Question 1

A curved structure for spanning an opening, designed to support a vertical load primarily by axial compression

Answer 1

Arch

Question 2

An arch constructed of individual stone or brick voussoirs

Answer 2

Masonry Arch

Question 3

Any of the wedge-shapes units in a masonry arch or vault, having side cuts converging at one of the arch centres

Answer 3

Voussoir

Question 4

The first voussoir resting on the impost of an arch

Answer 4

Springer

Question 5

The wedge-shaped, often embellished voussoir at the crown of an arch, serving to lock the other voussoirs in place

Answer 5

Keystone

Question 6

The height of an arch from the spring line to the highest point of the intrados

Answer 6

Rise

Question 7

The exterior curve, surface, or boundary of the visible face of an arch

Answer 7

Extrados, Back

Question 8

A decorative molding or band on the face of an arch following the curve of the intrados

Answer 8

Archivolt

Question 9

The inner curve or surface of an arch forming the concave underside

Answer 9

Intrados

Question 10

The point at which an arch, vault, or dome rises from its support

Answer 10

Spring, Springing

Question 11

The highest part or point of a convex construction, such as an arch, vault, or roadway

Answer 11

Crown

Question 12

Either side of an arch curving down from the crown to the impost

Answer 12

Haunch

Question 13

The uppermost part of an abutment, often in the form of a block, capital, or molding, from which an arch springs.

Answer 13

Impost

Question 14

The triangular-shaped, sometimes ornamented area between the extrados of two adjoining arches, or between the left or right extrados of an arch and the rectangular framework surrounding it

Answer 14

Spandrel, Spandril

Question 15

An archway having sides or jambs not at right angles with the face of its abutments

Answer 15

Skew Arch

Question 16

Any of several concentric rings of masonry forming an arch especially when each projects beyond

Answer 16

Order

Question 17

A crosspiece connecting the ribs in a centering

Answer 17

Lag, Bolster

Question 18

A temporary framework for supporting a masonry arch or vault during construction until the work can support itself

Answer 18

Centering

Question 19

A board used as centering for a flat arch, slightly crowned to allow for settling of the arch

Answer 19

Camber Piece, Camber Slip

Question 20

An arch having a horizontal intrados with voussoirs radiating from a center below, often built with a slight camber to allow for settling

Answer 20

Flat Arch, Jack Arch

Question 21

A flat arch having voussoirs inclined to the same angle on each side of the center

Answer 21

French Arch

Question 22

A primitive form of arch consisting of two stones laid diagonally to support each other over an opening

Answer 22

Triangular Arch

Question 23

A false arch constructed by corbels for courses from each side of an opening until they meet at a midpoint where a capstone is laid to complete the work. The stepped reveals may be smoothed, but no arch action is effected

Answer 23

Corbel Arch

Question 24

An arch having a continuously curved intrados especially a semicircular one

Answer 24

Round Arch

Question 25

An arch having a semi-circular intrados

Answer 25

Roman Arch

Question 26

An arch struck from one or more centers below the springing line

Answer 26

Segmental Arch

Question 27

A stone or course of masonry having a sloping face against which the end of a segmental arch rests

Answer 27

Skewback

Question 28

An arch having one impost higher than the other

Answer 28

Rampant Arch

Question 29

An arch resting on imposts treated as downward continuations of the archivolt

Answer 29

Stilted Arch

Question 30

A round arch resting on two large corbels with curved faces

Answer 30

Bell Arch

Question 31

An arch having an intrados that widens above the springing before narrowing to a rounded crown

Answer 31

Horseshoe Arch, Moorish Arch

Question 32

An arch having a cusped intrados with three round or pointed foils

Answer 32

Trefoil Arch

Question 33

A three-centered arch having a crown with a radius much greater than that of the outer pair of curves

Answer 33

Basket-Handle Arch, Anse De Panier

Question 34

An arch having a pointed crown

Answer 34

Pointed Arch

Question 35

A pointed arch having two centers and radii equal to the span

Answer 35

Equilateral Arch

Question 36

A pointed arch especially one having two centers and equal radii

Answer 36

Gothic Arch

Question 37

A pointed arch having two centers and radii greater than the span

Answer 37

Lancet Arch

Question 38

A pointed arch having two centers and radii less than the span

Answer 38

Drop Arch

Question 39

A four-centered arch having an inner pair of curves with a radius much greater than that of the outer pair

Answer 39

Tudor Arch

Question 40

An arch having a rise less than half the span

Answer 40

Surbased Arch

Question 41

A pointed arch, each haunch of which is a double curve with a concave side uppermost

Answer 41

Ogee Arch