Axisymmetric Plume : A plume that rises above a fire, does not come into contact with wall or other obstacles, and is not disrupted or deflected by airflow
NFPA 92B Standard for Smoke Management Systems in Malls, Atria, and Large Spaces, 2009 ed. http://catalog.nfpa.org/NFPA-92B-Standard-for-Smok e-Management-Systems-in-Malls-Atria-and-Large-Spac es-Prior-Years-P4285.aspx, (Std: Smoke Mgt Sys in Malls, Atria, and Large Spaces - Amer) {239 NFC}