2/12/2023 0 Comments Use multible inputes to grandtotal![]() There are actually two problems that Revit presents us with here: Let us suppose that you want to schedule a series of floor areas for a multistorey building and then calculate the ratio between the total of those floor areas against the site area - in Australia we call that the 'Floor Space Ratio'. ![]() ![]() Many thanks to Martijn, as I originally learnt the technique from his blog posting. More recently (2011), Martijn de Riet published a description of how to calculate a ratio between two area types - this includes the workaround but does a few extra tricks of calculating a ratio of two different sub-totals after first separating them from one grand total, so it is not that easy to understand just the 'totals in formulas' workaround. I must confess that this is not my original idea - in fact I have found references to the workaround, as far back as 2006 on AUGI by Leonard Raiz (one of the Revit Founders). The first response is always No! Then eventually someone will mention the arcane workaround but it is not always clearly explained so I have decided to show a simple example of what the problem is, and how the workaround might be applied. "Is it possible to use a grand total from a schedule in a formula in Revit". This has been a frequently asked question on the various forums over the years:
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