So having identified the key functions that we are going to design for, we are now
going to think about the best ways to fulfil them. Ideally, we only include
something (a system or element) in our design if it fulfils at least three functions.
Remember the ecological principle: Multiple functions for each element. Nature
happens to be so productive, because everything performs many functions.
Taking each of your chosen functions in turn, write down all the ways you can
think of to (realistically) achieve them. Obviously disregard anything that is clearly
way beyond budget, or an inappropriate scale (too big or small) for the purpose.
When you are done you should have three or four lists, one for each function.
You will probably find that some of the things you thought of are on several of
your lists. Go through them again and see which other of the systems and elements
you thought of also perform any of the other functions. This identifies some
strong possibilities, though you will still have to make sure that they are suited to
the site conditions and other client requirements (do they fit in with the client’s
values?) before deciding upon including them in your design.