Grading with different slopes

[Anonymous]

Hello,

I am apologized that i have posted this under "Helicopter pad and grading" but now i have to post it again, due to the changes of design. I tried to work with grading but it didn't work, so i really need your helps.

1 - The square helicopter pad is flat and grading with 2:1 fill, 1:1 cut.

2-  The second FL is 2% slope down and grading with 2:1 fill, 1:1 cut.

3-  The third FL is slope down to meet the existing road, both sides will same cut and fill.

I hope some one can take a look at this drawing. It seems to be very simple, but really hard for a person who just know a little about grading.

Happy New Year.

Dennis

[Anonymous]

i tried to open your file with 2013 sp2 and I crashed more than once. Is your version 2014? if not please audit purge and repost.

[Anonymous]

Please see attached.

It is C3D 2014.

Thanks much!

[BrianHailey]

First thing, don't overlap feature lines. That's a very bad thing to do.

Second, assign the elevations you want to the featurelines. I assigned the elevation to the helicoptor pad first, and then calc'd the elevation of the 2% down line. I set a constant slope between the two along the curved line on the south of the drive to the pad.

Third, assign elevations to the feature line tying into the road using the existing surface.

Fourth, combine the outside featurelines into a single feature line (this makes the projection grading easier).

Fifth, grade the featureline created in the step four out to the existing ground (have the grading group create a surface).

Sixth, use infills to fill in the interior portions of the grading.

And your done. 

This is what I ended up with.