Well, if you are using Archicad correctly, it is already drawing most elements - roofs, walls, slabs, polylines, fills, etc, orthographically. Consider building your 'drawings' with these things instead of mere lines.
Also as colleague Krippahl indicates, turning on guidelines acts as an on-the-fly constraint for any number of references and orthographic controls.
These tools are adequate for anyone willing to consider alternatives to what they expect to draft.
Dwight Atkinson