Component along a divided curve w/ adjustable slider

New to GH.
My goal is to have several extruded shapes (WF Girder) placed along a curve and divided equally (controlled by Slider). I am hoping that the the smaller the distance the greater the number of Shapes and vise versa. These shapes should maintain current orientation.
Practice_Component placement- (9.0 KB)

I have the component/extruded shape defined. The curve is not special other than it could contain a peak such as a cross section of a road. I am assuming that both ends will automatically contain a shape and the rest will space out as necessary.

I have tried several random things but have not been successful. Any help would be appreciated. See attached file.