Great packages Gavin ! A lot of our models in AU are set to MGA north - perhaps needs another node to rotate the vectors by addition 1deg deviation to True North ?
@AussieBIMGuru4 ай бұрын
Yes if a project orientates itself to mga north then you would need to rotate the vectors. Most projects to my understanding use true north instead for shadows as otherwise revit graphical shadows themselves are incorrect. That or firms are playing the dangerous game of accepting that the 1-2 degrees does not matter... Another workaround is set up multiple norths or temporarily change true north to add grid declination when running this tool, but unfortunately revit does not understanf this well, its an awful program for georefrrencing generally. I do most of my analysis in rhino which has a correction factor you can add to the sun path or nodes usually to do more sensitive analysis, I find most architects are quite clueless about coordinates these days and see it as a 'bim thing'... hope not the same for other BIM managers experiencing out there.
@alantze5 ай бұрын
Works great in R24. Thanks Gavin!
@AussieBIMGuru5 ай бұрын
Thanks Alan, hope you're doing well - been a while!
@harpcourt5 ай бұрын
do you have an videos of BIM to FM ? I am currently working as an owners rep developing their program.
@AussieBIMGuru5 ай бұрын
It's not an area I get too involved in as clients are still quite behind in this space in Australia (most just take in drawings and use platform like archibus at best). This discussion may be helpful as a reference maybe; kzbin.info/www/bejne/pX7UeKJ9jN6drq8feature=shared
@marcinosiecki42725 ай бұрын
May I ask which solar calculator is used to determine sun vectors? Ladybug uses NOAA as I remember.
@AussieBIMGuru5 ай бұрын
Ladybug does indeed. Unfortunately I've been unable to track down Revit's noted system but there is very slight discrepancies (almost unnoticable until you zoom in) sometimes. Whether this is NOAA with rounding (Revit is less precise than Rhino) or a different engine I'm unsure, but for high level solar analysis it generally is close enough in my experience to Gh/Epw near similar locations.