SECTIONS
A section is an orthographic projection of an object as it
would appear if cut through by an intersecting plane. It
opens up the object to reveal its internal material,
composit ion, or assembly. in theory, the plane of the section
cut may have any orientation. But in order to distinguish a
section drawing from afloor plan-the other type of
drawingthat involves a slice- we usually assume the plane
of the cut for a section is vertical. As with other
orthographic projections, all planes parallel to the picture
plane maintain their size, shape, and proportions.
We use section drawings to design and communicate the
details of a building's construction as well as the assembly
offurniture and cabinetry. In architectural graphics,
however, the building section is the premier drawing for
revealing and studying the relationship between the floors,
walls, and roof structure of abuilding and the dimensions
and vertical scale of the spaces defined by these elements.
- - -··---- - ,
I
i
... Design sections emphasize the solid-void relationship
•
between the floors, walls, and roof structure of a
building and the vertical dimensions and relationships
of the contained spaces.
~
• Construction sections articulate the structural and
material assemblies and details of a building.
MULTIVIEW DRAWINGS
I 55