Abstract
We collected the plans of assembly halls and auditoriums where social and cultural meetings nare held and various kinds of entertainments for citizens are given. Basing on the results of our investigations into the assembly halls and auditoriums in Osaka and Hyogo Prefecture, we classified the plan types of them. The conclusion are as follows; (1) Two types called the "single building type" and the "plural building type" are extracted from them. (2) The "single building type" is divided into the types called the "division interior type" and the "common lobby type". The "plural building type" is divided into two types called the "sepalated building type" and the "combined building type". (3) The "division interior type" amounts to 23.4%, the "common lobby type" 24.1%, the "separated building type" 17.1%, the "combined building type" 33.5%.