BIM Dimensions: What is 3D, 4D, 5D, 6D and 7D?

How many BIM dimensions does it take to change a light bulb? Up to seven, according to the boffins. OK that’s not much of a punchline, we’ll admit – just another example of the unstoppable progress of Building Information Modelling. You’d be forgiven for assuming that anything beyond three dimensions was within the realms of …