Section 95(22) in West Bengal Municipal (Building) Rules, 2007
(22)"gallery" means the raised portion of a room, which remains open to the room;Explanation. The floor of the gallery may be either level or sloped. If the space below the gallery is enclosed or divided off from the room, the space so enclosed remains a ground floor room. If the side of the gallery which was open to the room is filled by a wall or partition, the gallery becomes a mezzanine floor;
