The software listed is available for downloading:

BRANZFIRE: A multi-room zone model fully integrated with a flame spread and fire growth model applicable to room fire scenarios.

BRANZTR8 Ver 2.6: This program is for analyzing the fire resistance of reinforced or prestressed concrete floor systems (1.5 MB). The fire resistance is determined by comparing the moment capacity of the section at elevated temperature with the applied moment. Requires Microsoft Windows 95 or later.

BRANZTR9 Ver 2.0: This program is for extrapolating the results of a fire resistance test on a loadbearing light timber framed wall or floor/ceiling system (3.5 MB). Changes in the height and/or load may be accommodated by increasing the stud/joist size. A User's guide is also available for downloading. This beta version of the program is available for trial use and comments to the writer would be appreciated.

Also check out the bulletin board site at NIST for a range of fire software to download. You can get ASCOS, ASET-B, ASMET, BREAK1, CCFM, DETACT-QS, DETACT-T2, ELVAC, EXITT, FIRDEMND, FIRST, and LAVENT.

NIST also have an excellent Fire-on-the-Web site where you can view heat release rate data, download their latest room zone model FAST/CFAST.