CONCEPTUAL STRUCTURE

master	- project, date_started, session_no, date
	building   - location, environment(exposure, gnd_rflct), function
		   geometry	- no_zones^,
				zone	- type, name, desc, orient, origin
					vertex_list	-
							points	- x, y, z
					surface_list
							surface	- point_list
	analysis


DATA STRUCTURES

location _Location
latitude  _Latitude
longitude  _Longitude
environment  _Site_type
exposure  _Exposure
grnd_rflct  _Grnd_rflct
function  _Function

zone_name [_Zone_no]  _Zone_name
zone_desc [_Zone_no]  _Zone_desc
zone_type [_Zone_no]  _Zone_type		%%%%%
zone_orientation [_Zone_no]  _Orientation
zone_origin [_Zone_no]  _X _Y _Z

vertex [_Zone_no, _Vertex_no]  _X, _Y, _Z
surface [_Zone_no, _Surface_no]  _List_of_vertex_nos
