This is a very common issue that manufacturers won’t necessarily know about but for everyone further down the line it can cause some issues. We get all the parameters we need for our BIM objects from the ‘NBS BIM Toolkit’ (parameters will vary depending on product and application). The downloadable Excel file provides the name of each non-standard parameter and how it should be written within the design programme. Manufacturers need to make sure this is exactly the same, including spacing, capital letters, spelling, everything!
The reason for this is because when people go to schedule their model (pull the embedded information within a building model into a spreadsheet format) they could have multiple different parameters that are all for exactly the same thing. For example, thermal resistance properties of an insulation product in a BIM model can be labelled as ThermalResistance, Thermal Resistance, thermalresistance or InsulationRValue. All four of these are exactly the same but because there are naming differences between them they all show up within the scheduling resulting in four columns with only one field filled out per insulation type. Until there is one unified standard (hopefully coming soon) this is something that will always cause issues but we can do our best to try and make it as easy as possible for designers. Our advice for now is to use tools like the NBS BIM toolkit, as it’s a free to use service which is available to everyone.