TONAL VALUES IN ARCHITECTURAL DRAWINGS
These exterior perspectives employ avalue system
sim ilar to that used in elevation drawings.
• Above, the contour drawing of the building and
foreground contrasts with the darkerfield of the
background.
• In the drawing below, the building and foreground
are rendered insome detail to contrast with a
lighter, more diffuse background .
...
~··
~:""~~,,. '\~~,,;;.,,,,~,.,~~,~~\\~\~\\~~~,:~ ...,\\~··"~;\.
,_
~' ;P
\ ;\\ ,1,'\\\.\\\\Ht,\•
'
' \ " ''
' \' '
• Turnto page 106 to see how contrasting the cut
elements of a section perspective helps to isolate
and frame the space seen beyond in perspective.
142 I ARCHITECTURAL GRAPHICS