Snap
The snap command is started by pressing F8 on the keyboard. Snap enters a point at the existing point closest to the crosshair. Snap will only allow you to enter elevations and snap to existing points on annotation line. It does not allow a different elevation to be snapped to an existing point on a data line. If an elevation was typed in, the new point assumes that elevation on annotation lines only. If no elevation is specified the snapped point interpolates the elevation of the point it was snapped to.
Line Snap
Line Snap is a quick method of snapping to multiple points on a line. Press the F8 key twice on the same point where you wish to start the new line. The entire line should highlight with a small diamond displayed on the first and last points of the selected line. The cursor changes to the Line Snap Cursor. Move the cursor to the point on the highlighted line where you wish to end and press F8 a third time.
Area Snap
Snapping to an enclosed area is a variation of Line Snap. Type in the new line elevation, press F8 twice to highlight the entire area, then press Right button to close the area.
Nearest Snap
Nearest (Intersection) Snap creates an intersection point on a line and then snap to that point. Place the crosshair over the line and press F6 on the keyboard. The new point interpolates its elevation from the existing line.
Elevation Snap
Some CAD files have the elevations stored as text. This text is displayed by turning on Elevation Labels under the Display Menu. Earthwork 4D can take this text and assign it to other points by using snap. Select the point to change and press the F9 key to snap to the text point. The text elevation assigns to the selected point.
