SketchUp allow for plenty of additional user controlled variables - these do not need to affect geometry - but can affect color, materials, movement, placement, cost, model number, location, labor, etc. etc. ...
With Pro V7 there are options to export this to lists - if the timber components can extract size data we can build timber order lists - and if you wanted to get very particular - you could add $$ and labor (time) variables to particular joints, pegs, etc... and have a powerful modeling and estimating tool.
Last edited by bmike; 12/26/08 01:19 PM.