Building sewer means the extension from the building drain to the public sewer or other place of disposal.
Building site means a plot of land held for building purposes, whether any building is actually erected thereupon or not, and includes the open ground or courtyard enclosed by, or adjacent to, any building erected thereupon;
Building Square Footage or "BSF" means the square footage of assessable internal living space of a Unit, exclusive of any carports, walkways, garages, overhangs, patios, enclosed patios, detached accessory structure, other structures not used as living space, or any other square footage excluded under Government Code Section 65995 as determined by reference to the Building Permit for such Unit.
Building system means plans, specifications and docu- mentation for a system of manufactured building or for a type or a system of building components, which may include structural, electrical, mechanical, plumbing and variations which are sub- mitted as part of the building system.
Base Building shall include the structural portions of the Building, the public restrooms and the Building mechanical, electrical and plumbing systems and equipment located in the internal core of the Building on the floor or floors on which the Premises are located. Tenant shall promptly provide Landlord with copies of any notices it receives regarding an alleged violation of Law. Tenant shall comply with the rules and regulations of the Building attached as Exhibit E and such other reasonable rules and regulations adopted by Landlord from time to time, including rules and regulations for the performance of Alterations (defined in Section 9).