I'm not at the right computer (no AC on this one), but you should be able to do that under the data base units. I pull off concrete in cu. yds. etc, but you would need to set up a property object referencing the data base quantities. I think there are many data base references to carpet, asphalt etc that you can easily use to extract the info from. There may be an easier way too, but this is how I have been doing it for material list.
If this is helpful, but not helpful enough, I can check it out when I get to the right computer.
