AutoCAD Architecture :: Associative Spaces And Usable Area Boundaries

We work in space management and deal with associative spaces every day. As a platform we use ACA 2012, with out own Add-on tool (whch simply groups ACA's own tools in one).

We have issues on a daily-basis with the usable boundaries of associative spaces (the green line indicated in the example attachment). Generally when a floorplan is simple, consisting mainly of 90-degree angles wall intersections, everything works fine. However when we work with floorplans consisting of arched, or even more often slanted walls or walls that meet at different angles, the usable boundaries' lines tend to create a "spike" (labled B. on the attachment) which extends outward from the plan, thus creating i.e a 28m2 space out of a 13m2 space (labled A). We use our own calculation standard, however using BOMA or SIS the issue occurs in the same manner, using SIS its even worse.

Generally we solve these issues by changing wall justifications, deleting and re-creating spaces, etc, etc. This can be a very tedious process, one which takes a long time and time is of the essence! 

We are aware that by making the spaces non-associative, we can then manually edit the usable boundary, however this is not an option as we handle a great deal of different floorplans each day, and these plans are updated frequently, so we do not want to send out a drawing which has a problem like this because the next person who edits some of the spaces will most likely come across the same problem again.