Hi there
Our company, MLC Quantity Surveyors has just started to embrace BIM software and need help on the following topic.
We are looking for a function within Revit on how to produce a single schedule of all building elements with quantities in a structure (For example - Foundations, slabs, columns, walls, doors, roofs, finishes etc). Once this is produced, we want to code this schedule for Architects so that the information inputted into the model can be much more useful for us as Quantity Surveyors. We have a list of codes according to an estimating technique used in our profession.
Kind regards
Ryan
rlnefdt@gmail.com
Revit is built around Assembly Codes and Omniclass already, has fields and lookup tables defined to store such data. Ideally the software you use can harness those established classification systems. Autodesk would like you to believe that the estimating tools in Navisworks will get you there. Haven't met an estimator who completely agrees though.
Revit schedules lose their effectiveness in the multi-category format. Revit only offers their built-in parameters in the multi-category schedule. To get any meaningful data beyond them (see image) whoever builds the model and the related content would have to undertake a very careful process of defining all of their own shared parameters for everything ahead of time. Not an unworthy task perhaps but I expect you'll find few ready to support that situation right away.
It is very easy to get schedules focused on Revit's categories individually however. You just have to combine it all externally to get the big picture.
Then there are things that are generalized to arrive at estimated values. As you know you can get a reasonable early estimate with just surprisingly few variables, as long as you've got some domain experience behind you. You might find it more practical to export the data to ODBC so you own software can extract what you think is meaningful versus trying to put it directly in Revit ahead of time.
If you look for software that has a focus on working with Revit then you'll at least be dealing with tools that recognize what it can/can't do at present.
Steve Stafford
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