The corrupted PDF file posted for AULCC last week was reposted, and it opens now. It's a large file that contains just about everything about the building except elevations. The tower is 30-stories on Sabine and 33-stories on Red River. The height is listed as 347', but that is probably the roof height from Sabine. So it could still be close to 400' to mechanical from the Red River entrance.
Here are the updated uses by floor:
ftp://ftp.ci.austin.tx.us/ATD_AULCC/.../191017/PLANS/