AutoCAD Civil 3D

[#1]

is there a way to get a group of 3d polylines to elevation zero all at the same time. a 300 foot long 3dpoly i have might have a couple hundred grips on it. i converted them to features and was going to do it that way, but thought i'd throw out a post and see if anyone had any sugg.

thanks.

[#2 · Accepted solution]

Express tools: FLATTEN

[#3]

it seems as though this command is just destroying my lines. see image, 3d view. there is nothing sent to 0, relayered or anything.

thanks, Joe.

[#4]

sorry chief, answer no to remove hidden lines

[#5]

success! i was in an orbited view.

thanks!

[#6]

Another method is to use Civil 3D's Grading > Polyline Utilities > ConverT 3D to 2D Polylines.

The command is CONVERT3DPOLYS.