MULTIVIEW DRAWINGS
Any single orthographic projection cannot convey facets of a subject t hat are oblique or
perpendicular to the pictureplane. On ly by looking at related orthographic projections
ca nt his information be discerne F is reason, weuse thet erm "multiviewdrawings"
d. orth
to describe t he series of orthographic projections necessary to fully andaccurately
describe athree-dimensional subject.
• If we enclose an object w atransparent picture-plane
ithin
box, we can n the im
ame
ages projected orthographically
on the principal picture planes.
to
• Top views are orthographic projections cast onto t h
e
horizontal picture plane. In architectural drawing, top
views are called plans.
• Front and side views are orthographic projections cast
on the vertical picture planes. Inarchitectura l drawing,
to
front and side views are called elevations.
• See Chapter4for ftoor plans and s V7F