Chapter:	123M	Title:	Building (Energy Efficiency) Regulation	Gazette Number:	E.R. 1 of 2012
Section:	2	Heading:	Interpretation	Version Date:	09/02/2012

In this Regulation, unless the context otherwise requires-
commercial buildings (商業建築物) includes offices, shops, department stores, places of public entertainment, places of public assembly, restaurants and any other buildings used for commercial purposes, but does not include hotels, domestic premises, industrial buildings, schools, carparks, places used for bulk storage and utility buildings such as power stations and sub-stations;
external wall (外牆) means the whole, or any part, of an outer wall of a building and includes a wall adjoining a wall of another building but does not include a wall or part of a wall which is underground; (16 of 2011 s. 43)
hotel (旅館) has the meaning assigned to it by section 2 of the Hotel and Guesthouse Accommodation Ordinance (Cap 349);
overall thermal transfer value (總熱傳送值) means, as regards a building, the amount, expressed in watts per square metre (W/m²), of heat transferred through that building envelope and calculated having regard to factors such as the area of the building envelope, the material used in its construction, thermal properties of the material, orientation of the building, the area of the openings in the building envelope and the shading effect of projections from the building envelope;
refuge floor (庇護層) means a protected floor that serves as a refuge for the occupants of the building to assemble in case of fire.