This command allows you to create final sections and have the offset, grades, and end area dynamically displayed and calculated while in the design process. This command works on a section grid that has an existing grade polyline which is used as the reference for the cut/fill calculations. The final section points can be entered as offset-elevation or picked on the screen. As you move the crosshairs on the graphics screen, the offset, elevation, slope percent, slope ratio, and end areas are displayed in a real-time pop-up window. When picking design points, you can use this real-time window to check the slope and other values and get these values close to the desired amounts. Then after the point is picked, a snap dialog appears (if the snap option is active) which allows you to set a slope or other value to a fixed amount (i.e. set the slope to 2.00% from 1.97%).
There are several options when specifying the final section points. The 'T' (Tie) option goes from the last final section point to intersect the existing grade at the specified slope. The 'F' (Force grade) option prompts for a slope percent or ratio that is used to set the slope between the last two regrade points. The program expects the final section points to be entered from left to right, but you can reverse the entry order by using the 'S' (Switch Direction) option. The 'P' (Pick existing) will use a point on the existing grade that is closest to the picked point. This is the same as the object snap nearest. The 'M' (Modify) option allows you to change an already placed regrade point. The program will prompt you to pick which regrade point to change. You can then pick a new position for it. This option allows the adjusting of already placed regrade points to help balance the cut/fill.
The command starts with a settings dialog. The Prompt for Snap
toggle controls whether the command will present the snap dialog
for each section point that is picked on the screen. The Grid
Starting Elevation edit box allows you to input the beginning
elevation of the local grid that you are designing in. Use the
Horizontal and Vertical Scale edit boxes to set the proper
horizontal and vertical scales for your design environment. The
Text Scale value is multiplied by the horizontal scale to set the
text size of the cut/fill end area labels. The regrade can be saved
in a .sct file with the Output Regrade to Section File option. The
Output Regrade to Earthworks File option stores the cut and fill
values of the regrade to an earthwork (.EW) file that can be used
in the Print Earthwork File Report command.
Design Regrade Settings dialog Make choices and click
OK.
Pick Center Point of Grid [int on]: pick a point Pick
the point where the local grid lines intersect at the 0 offset and
datum elevation.
Select the existing grade polyline: select
polyline
First offset or pick a point (P,Help): pick a point
If you have the snap prompting on then each time you pick a point
from the screen the dialog below will appear.
Second offset or pick a point (U,S,T,P,M,Help): pick a
point If you make a mistake on one of the points you select
than use the U option to undo or delete your last entry.
Next offset or pick a point (U,F,S,T,P,M,Help): F If
you want to type in a specific grade use the Force grade
option.
Ratio/<Percent grade between 0.0 and 30.2>:
-2
Next offset or pick a point (U,F,S,T,P,M,Help): pick a
point
Next offset or pick a point (U,F,S,T,P,M,Help):
75
Percent grade/Ratio of slope/<Elevation>:
445
Next offset or pick a point (U,F,S,T,P,M,Help): press
Enter Press Enter to end the command.
Pick point for label (Enter for none): pick a point to
label the cut/fill end areas
Enter station of
regrade: 100
Pulldown Menu Location: Sections
Keyboard Command: regrade
Prerequisite: Must plot the polyline that represents the
existing grade