Saturday, 11 October 2014

Revit Family size

Recently I had to evaluate some Revit models. After some checks I ran into some large families. Drilling a bit further down I found some heavy detail items. Basically some autocad files had been exploded in them. This made me wonder what is the impact of a line or arc on the filesize and thus the memory usage in Revit.

An empty Empty detail item.rfa = 204 KB (208,896 bytes)

Adding lines: 1             
= 204 KB (208,896 bytes)
Adding lines: 10  
= 204 KB (208,896 bytes)
Adding lines: 100  
=220 KB (225,280 bytes)
Adding lines: 1000  
=368 KB (376,832 bytes)

An empty Empty detail item.rfa = 204 KB (208,896 bytes)
Adding arcs  100
224 KB (229,376 bytes)
Adding arcs  1000
404 KB (413,696 bytes)

 this roughly means the following:
1 line = +/- 168 bytes
1 arc = +/- 205 bytes

don't forget to multiply filesize times 20 for memory usage

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