[Code of Federal Regulations] [Title 36, Volume 3] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR910.60] [Page 204] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER IX--PENNSYLVANIA AVENUE DEVELOPMENT CORPORATION PART 910--GENERAL GUIDELINES AND UNIFORM STANDARDS FOR URBAN PLANNING AND DESIGN OF DEVELOPMENT WITHIN THE PENNSYLVANIA AVENUE DEVELOPMENT AREA--Table of Contents Subpart D--Glossary of Terms Sec. 910.60 Gross floor area. Gross floor area is defined in section 1201, Zoning Regulations of the District of Columbia and generally means the sum of the gross horizontal areas of the several floors from the ground floor up of all buildings of a development occurring on a lot. Gross floor area shall be measured from the exterior faces of exterior walls and from the center line of walls separating two buildings.