Posted by Manuel Oliveros on October 30, 2002 at 09:43:59:
In Reply to: how to rase and lower cross sec. posted by richard durling on October 29, 2002 at 13:33:51:
You draw a cross section of your building and yard in the relative correct position. The yard and/or part of the building (cellar or so) will ingrain with the ground below ... anything over the yard level, or occupied by construction needs be excavated.
Professionals use the convention of putting some crosshatched patterns indicating that that specific part in the drawing represents the ground, or earth. Contrarily, nothing is drawn where air is. So you will have say diverse constructive materials represented (by colors, or their edge in ink) and the ground below.
Materials in section may or may not have some pattern within. Many times no pattern is used for materials because the drawing is in accord with the usual conventions in the industry and easily understood by professionals. Using patterns for everything would cause the drawings become unclear with the usual representation and reproduction.
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