VISDIC: A

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-shaped units in a masonry arch or vault, having side cuts converging at one of the arch centers.

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 voussoir 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. Also called back.

Answer 7

EXTRADOS

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. Also, springing

Answer 10

SPRING

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 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 13

SPANDREL. Also, spandril

Question 14

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

Answer 14

IMPOST

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, esp. when each projects beyond the one below

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 setting of the arch.

Answer 19

CAMBER PIECE Or CAMBER SLIP

Question 20

An arch shaped to develop only axial compression under a given loading. It is subject to bending if the loading pattern changes.

Answer 20

FUNICULAR ARCH

Question 21

the funicular shape for an arch carrying a vertical load uniformly distributed along the length of the arch axis

Answer 21

INVERTED CATENARY

Question 22

the funicular shape for an arch carrying a vertical load uniformly distributed over its horizontal projection

Answer 22

PARABOLA

Question 23

An arched structure of timber, steel, or reinforced concrete, constructed as a rigid body capable of carrying bending stresses

Answer 23

RIGID ARCH

Question 24

the manner in which an arch transforms the vertical forces of a supported load into inclined components and transmits them to abutments on either side of the archway

Answer 24

ARCH ACTION

Question 25

The set of resultants of thrusts and weight each part of an are imposes on the next lower one and must coincide with the arch axis for bending to be eliminated throughout an arch

Answer 25

LINE OF THRUST

Question 26

The median line of an arched structure

Answer 26

ARCH AXIS

Question 27

the outward force or pressure exerted by one part of an arched structure against another

Answer 27

THRUST

Question 28

the thrust of an arched structure on its abutments, proportional to the total load and span, and inversely proportional to the rise

Answer 28

DRIFT

Question 29

A fixed frame structure having an arched form

Answer 29

FIXED ARCH

Question 30

A two-hinged frame structure having an arched form

Answer 30

TWO-HINGED ARCH

Question 31

A three-hinged frame structure having an arched form

Answer 31

THREE-HINGED ARCH

Question 32

An iron or steel rod serving as a structural tie especially one keeping the lower ends of an arch or frame from spreading

Answer 32

TIE ROD

Question 33

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

Answer 33

FLAT ARCH

Question 34

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

Answer 34

FRENCH ARCH

Question 35

An arch having a continuously curved intrados especially a semicircular one

Answer 35

ROUND ARCH

Question 36

An arch having a semicircular intrados

Answer 36

ROMAN ARCH

Question 37

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

Answer 37

SEGMENTAL ARCH

Question 38

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

Answer 38

SKEWBACK

Question 39

A false arch constructed by corbelling courses from each side of an opening until they meet at the midpoint where a capstone is laid to complete the work. The step reveals maybe smoothed but no arch action is effected.

Answer 39

CORBEL ARCH

Question 40

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

Answer 40

TRIANGULAR ARCH

Question 41

An arch having one impost higher than the other

Answer 41

RAMPANT ARCH

Question 42

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

Answer 42

STILTED ARCH

Question 43

A round arch resting on two large corbels with curved faces

Answer 43

BELL ARCH

Question 44

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

Answer 44

HORSESHOE ARCH / MOORISH ARCH

Question 45

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

Answer 45

TREFOIL ARCH

Question 46

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

Answer 46

BASKET-HANDLE ARCH /ANSE DE PANIER

Question 47

An arch having a pointed crown

Answer 47

POINTED ARCH

Question 48

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

Answer 48

EQUILATERAL ARCH / GOTHIC ARCH

Question 49

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

Answer 49

DROP ARCH

Question 50

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

Answer 50

TUDOR ARCH

Question 51

An arch having a rise of less than half the span

Answer 51

SURBASED ARCH

Question 52

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

Answer 52

OGEE ARCH

Question 53

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

Answer 53

LANCET ARCH