I, personally would see 1, 2, and 3 as loops because the movement is in a "line" or all on one plane, the wall or the floor for example. Spirals have a circular movement that travels rather than staying stationary. That would be like #4. The current ISWA does not have this same movement forward, so it has to be constructed. Here is my attempt.
Would this work for you Honza?
On May 14, 2013, at 6:55 AM, Valerie Sutton wrote:
May 14, 2013
For me, the term Spiral means a traveling circle…
Here are the three Spirals in the ISWA 2010: