Selected Bibliography Architecture - Form Space and Order | Page 58
C URV E D S URFA C E S
Saddle surfaces have an upward curvature in one
direction and a downward curvature in the perpendicular
direction. Regions of downward curvature exhibit archlike
action while regions of upward curvature behave as a
cable structure. If the edges of a saddle surface are not
supported, beam behavior may also be present.
The geometric basis for these curved surfaces can be
effectively utilized in digital modeling as well as in the
description, fabrication and assembly of curvilinear
architectural elements and components. The fluid quality
of curved surfaces contrasts with the angular nature
of rectilinear forms and are appropriate for describing
the form of shell structures as well as nonloadbearing
elements of enclosure.
Symmetrical curved surfaces, such as domes and
barrel vaults, are inherently stable. Asymetrical curved
surfaces, on the other hand, can be more vigorous and
expressive in nature. Their shapes change dramatically as
we view them from different perspectives.
Walt Disney Concert Hall, Los Angeles, California, 1987–2003, Frank O. Gehry & Partners
FORM / 4 3