VISUAL DICTIONARY IX Flashcards
(125 cards)
What is a vaulted structure having a circular plan and usually the form of a portion of a sphere; so constructed as to exert an equal thrust in all directions?
DOME
What is a curved line describing a vertical section cut through the axis of a rotational surface of a dome?
MERIDIONAL LINE
what is a circular line describing a horizontal section cut perpendicular to the axis of a rotational surface of a dome?
HOOP LINE
What is the force acting along a hoop line of a dome structure, perpendicular to meridional forces, which restrains the out-of-plane movement of the meridional strips in the shell of a dome, compressive in the upper zone and tensile in the lower zone?
HOOP FORCE
What force is acting along a meridional line of a dome structure, always compressive under full vertical loading?
MERIDIONAL FORCE
What is a dome having the form of a hemisphere?
SEMICIRCULAR DOME
What is a dome having the form of a segment of a sphere with its center well below the springing line, particularly sensitive to buckling under an external load?
SAUCER DOME
What is the ring encircling the base of a dome to contain the outward components of the meridional forces?
TENSION RING
What is a dome built with steel or timber trusses arranged in a radial manner and connected by polygonal rings at various heights?
RADIAL DOME
What is a steel deme structure having members that follow the lines of latitude and longitude, and a third set of diagonals completing the triangulation?
SCHWEDLER DOME
What is a steel dome structure having members that follow the circles of latitude, and two sets of diagonals replacing the lines of longitude and forming a series of isosceles triangles?
LATTICE DOME
What is a steel dome having members that follow three principal sets of great circles intersecting at 60°, subdividing the done surface into a series of equilateral spherical triangles?
GEODESIC DOME
What do you call the circular opening at the crown of a dome?
OCULUS
What is a superstructure crowning a roof or dome and having open or windowed walls to let in light and air?
LANTERN
What is a light structure on a dome or roof, serving as a belfry, lantern, or belvedere ?
CUPOLA
What do you call the vertical part of a cupola?
TAMBOUR
what is the space between the inner and outer shells of a dome?
INTERDOME
What do you call a dormer window in a roof or spire?
LUCARNE
What is a space or gallery beneath a dome or vault in which low sounds produced at any of certain points are clearly audible at certain other distant points?
WHISPERING GALLERY
What is half a dome formed by a vertical section, such as one over a semicircular apse?
SEMIDOME
What is a semidome or quarter-sphere vault, such as one over an apse or niche?
CUL-DE-FOUR
What is the spherical triangle forming the transition from the circular plan of a dome to the polygonal plan of its supporting structure?
PENDENTIVE
What do you call the area in the plane of a wall framed by an arch or vault, containing a window, painting, or sculpture?
LUNETTE
What is a spherical dome formed by removing four segments so that it merges with its pendentives and sits on a square plan?
PENDENTIVE DOME