To upgrade existing wall, penetrations & openings to create a 2-hr. horizontal exit wall, and to construct the two rooms for use as Ballet Dance Studio's per approved plans on file. Work to include new interior non-bearing walls to create two ballet rooms, viewing areas, exit corridor, horizontal exit, interior finish, electrical, mechanical & sprinkler system alterations. Field approval by the Fire , electrical, mechanical & structrual divisions are required for occupancy & use. P.C.#361-98/drs