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Discussions of my experiences of Revit and various work processes/tricks that I have implemented to utilise the program effectively. I have been using revit since August 2001.
Posted by Chris Price at 9:06 AM
Optimizing your Revit implementation can be the difference in a success or failure for your business.
Yesterday I was working on some MEP families and thought I'd do some tricks to generate some formulas to match a manufacturers capacity tables for Total Cooling Capacity & Sensible Cooling Capacity.
Being metric, the Dry Bulb & Wet Bulb Inside temperature parameters I had setup were in degrees Celsius. The Capacity parameters are in kW's so in order to use the temperature parameters in the formula I would need to remove the units.
Easy, I thought. I'll just divide by 1°C and that will give me a unitless value.
Unfortunately Revit decided to throw a curve ball at me. Internally all its calculations are done in Kelvin. For example, if I use my DB in a formula and its value is set to 20, Revit actually uses 293.15. So then I thought I'd divide by 1 K... No luck!
After trying for 3 hours I eventually gave up and went to bed.
With a fresh head I did some playing around in Excel to try and figure out how Revit was getting the results it was and eventually I came to this:
|Unitless Temperature Parameter|
If you are looking to really accelerate in the changing world of Building Information Modelling (BIM), you are going to need a dedicated BIM Manager (aka VDC Manager, Revit Manager, BIM Strategist etc). There is certainly no shortage of people sporting this still relatively new job title.
So if someone has been a BIM Manager in the past, does that mean they are qualified?
Unfortunately, not necessarily. In many firms the title of BIM Manager is often given to the existing BIM technician who knows the most about BIM at the time. That's certainly not a bad thing. But depending on their environment and their strive to learn new things and expore it may not necessarily qualify them to be 'your' BIM Manager. Many users with this title still only perform their same technician roles.
As such I strongly recommend evaluating their experience and skills practically. How do you do that?
There are online test systems available for BIM such as Knowledge Smart. With these systems you can customize the test to suit the types of BIM tasks you'll require and then see how they fair. There are also the general aptitude tests that evaluate how well a user picks up new information, performs under pressure etc. However, if you are relatively new to BIM as well, you may not know what you need.
It is very easy for someone to throw around buzz acronyms like BEP (BIM Execution Plans), IFC (Industry Foundation Classes), COBie (Construction Operations Building Information Exchange) and appear to know their stuff! But talking the talk and walking the walk are very different.
A BIM Manager needs to know a lot of different technologies, not just theoretically but practically. Specifically the methodology and best practices of information exchange, file formats, optimization, collaboration and the required information. Also depending on your company your BIM Manager may have different roles (lists may not be exhaustive of roles):
Contractor BIM Manager:
I had someone tell me the other day that I was not being considered for a role as they thought I wan't qualified enough as a BIM expert...
As such I thought I'd write a quick post outlining a brief summary of my BIM experience to avoid this occurring again.