I'm looking to slope stake a berm using a 3D Polyline. I have imported a dxf and a dtm from Civil 3D and was hoping to use the two in tandem. Staking a line and to the surface works fine but slope staking seems to be an issue. I select the polyline to slope stake from the map and then set the slope angle but then it asks for a Hinge point definition. I was under the assumption if the 3D line has an elevation and I am staking to existing ground I shouldn't need this. I'm not even sure how I would calculate this. Any ideas?