Rocks and Roads

Rocks And Roads logo
Iowa DOT's policy is to be
sensitive to the environment
and foster and enhance
environmental stewardship.

IOWA DEPARTMENT OF TRANSPORTATION

TERM	DEFINITION
blueprints	A photographic print in white on a bright blue background or blue on white background used for copying maps, mechanical drawings, and architect's plans.
centrifugal force	The force that tends to move an object away from the center of rotation.
cross section view	A drawing representing the view as if it was cut at right angles.
horizontal	Something that is lying flat, like the horizon.
interchange	A junction of two or more highways by a system of separate levels that permit traffic to pass from one to another without the traffic streams crossing.
Mylar	A special plastic used for making drawings.
plan view	A drawing of the top or horizontal view of an object.
profile view	A drawing showing the side or vertical section of an object.
scale-down	Reduction according to a fixed ration.
three-dimensional	Having three dimensions; i.e. a cube length, width and height.
two-dimensional	Lacking depth, having only two dimensions; i.e. a square length and width.
vellum	A special paper, often made from the skin of a calf or lamb, previously used for drawing road plans.
vertical	Something that is straight up and down.