Selected Bibliography Architectural Graphics | Seite 112

SECTION PERSPECTIVES
The section perspective combines the scaled attributes of
asection drawingand the pictorial depth of aperspective
drawing. It therefore is able to illustrate both the
constructional aspects of adesign as well as the quality
of the spaces formed by the structure.
• Begin asection perspective with a building section
drawn at aconvenient scale. Because thesection cut is
assumed to be coincident with the picture plane (PP) of
the perspective, it serves as a ready reference for
making vertical and horizontal measurements for the
perspective drawing.
--4-!H="~--~--+t-------++---.....:Df'~~·!>----~· Establish the horizon line (HL) and select acenter of
vision (C). The height of HL and position of Cdetermine
what is seen within the perspective view.
• On HL, establish the left and right diagonal points (DPL
and DPR) for 45• lines. As arule of thumb, the distance
from Cto DPL or DPR should be at least as great as the
width or height of the building section, whichever is
larger.
• Proceed by usingt hediagonal point method t o
construct the one-point perspect ive.
• In design drawing, one should remember
to emphasize the form of the interior and
exterior spaces that are cut through
rather than the construction details of
the structure itself.

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I ARCHITECTURAL GRAPHICS