We’re told that when a bricklayer first walks onto a building site, the first thing he or she does is not lay any bricks. They spend quite a bit of time working out exactly where the windows should be. This is because they want to position them exactly such that there is a neat half brick / whole brick pattern around the window frame. A very neat aim, but surely this is all on the architect’s drawing. Well, apparently not. Not, that is, unless the drawing is created under a Building Information Modelling (BIM) regime. A BIM drawing would show bricklayers exactly where the windows should be to create the desired, neat effect. This can save nearly a day of bricklayers’ time on site and serves as just one example of how BIM can cut costs on site.