Chapter 22: Communication Methods Flashcards
what scales should never be used
3/32 and 3/16 because they are too close to 1/8 and 1/4
what is a graphic scale
a visual scale put on your drawings so that if someone blows them up or shrinks them you can still scale things from it. like a map scale. Good for presentations or publication
what is an orthographic drawing
a three d object may be represented in two dimensions- like an elevation
at what height is a floor plan cut at
about 5’
what are elevation drawings good for showing
vertical dimensions, types and extent of materials that can’t be described on plan, some more detailed horizontal dimensions that are better seen at this larger scale
what is an axonometric drawing
a 3d drawing with the axis rotated so you can see more of it.
three types isometric, dimitric, trimetric
what is an isometric drawing
object is tilted in relation to a picture plane. all lines from the object are parallel. usually 30 degrees from a straight line running across the page. all angles are equal at the top corner
what is a dimetric drawing
two angles are the same at the top corner
what is trimetric drawing
no angles are the same at the top corner
what is an oblique drawing
if you took an elevation face and made it 3d. one face is like you’re looking straight on
what is the advantage to using an oblique drawing
that if you’re using the plan as the base, you can use the plan with out any redrawing. the plan is just tilted however much you want however you have to compensate for things looking too tall
what is the station point of a 2 point perspective
the point where you are standing in plan to view the plan from.
what would make the size of the perspective decrease or increase
placing the picture plane (line at the plan) further backfrom the plan that you’re drawing from up top makes it wider . best to put it at an inside corner
in a 2 point perspective, how do you determine how much of the two sides of an object will be visible
by the angle of the plan you place at the top to draw from
what part of a 2 point perspective is the only part actually to scale
where the picture plane hits the plan at your selected inside corner. aka true height line