Graphics Programs Reference
In-Depth Information
You created a new UCS as a tool to flip the drawing upside down without chang-
ing its orientation with respect to the WCS. Now you'll use it again to create the
front and back elevations.
Making the Front and Back Elevations
You can generate the front and back elevations using techniques similar to
those you have been using for two side elevations. You need to be able to trans-
fer the heights of building components from one of the side elevations to either
of the remaining elevations. To do this, you'll make a copy of the first elevation
you drew, rotate it 90º, and then line it up so you can transfer the heights to the
front elevation. It's quite easy:
1. Zoom out slightly, and then zoom into a view of the floor plan and
the first elevation. Pan the drawing so that the floor plan and eleva-
tion are on the left part of the drawing area.
You need to transfer the height data from the side elevation to the
front elevation. To ensure that the front elevation is the same distance
from the floor plan as the side elevation, you'll use a 45º line that extends
down and to the right from the rightmost and lowermost lines in the
floor plan.
2. Turn on Polar Tracking and ensure that Increment Angle is set to 45°.
Also make sure that the Object Snap Tracking button on the status
bar is toggled on. Then set the Endpoint osnap to running and be sure
the Midpoint osnap isn't running.
3. Start the LINE command. Move the crosshair cursor to the bottom-
right corner of the front stairway handrail in the floor plan. Hold it
there for a moment.
A cross appears at the intersection point. Don't click yet.
4. Move the crosshair cursor to the lower-right corner of the roof pop-out
in the floor plan, and hold it there until a cross appears at that point.
Don't click yet.
5. Move the crosshair cursor to a point directly to the right of the corner
of the roof pop-out and directly under the intersection point of the
handrail (see the top of Figure 10.44).
Vertical and horizontal tracking lines appear and intersect where
the crosshair cursor is positioned, and a small X appears at the inter-
section. A tracking tooltip also appears.
6. Click to start a line at this point.
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