Continuing the discussion from Beta project(s) eleven - experimental edition:
@areader154 here is how I made the dashed lines. It seems like a lot of steps but once you do it a few times it is no big deal. On really sharp curves it might not be great, but for geometric stuff it works pretty well. Bear in mind that I have an ancient version of Illustrator, so the menus and palettes may be different for you.
Step 1. Make your dashed lines the normal Illustrator way.
Step 2. Choose a stroke that is easily divisible by two and then do outline strokes.
You should now just have fills instead of strokes.
Step 3. Select all the fills and do offset path
When the dialog comes up put in -1 * half the stoke you choose.
Step 4. Without deselecting anything make a new layer, move the new path to it, and delete the original layer (or keep it and do something else with it).
Step 5. Use the pathfinder and do outline (this will clean up a lot of duplicate lines). Now if you ungroup everything you should have a ton of individual lines!
Save as SVG and done!