Surveying and Mapping Flashcards
GIS
Geographic Information System
Usual Grid Reference
British National Grid EPSG 2770
Raster layer
A static image used in making a base map
Vector Layer
A database of points making up features on a map. A vector is interactive and can be assigned new features
Title plans should include
North Arrow, Scale, OS permission to use, boundary, location, easments/wayleaves, title, date
GEA
Gross external area - Area of a building measured at each floor
NIA
Net internal area - The useful internal area measured to the internal wall
GIA
Gross internal area - Area of a building measured to the internal face of the wall
Land registry preferred scales
1:2,500. 1:1,250, 1:500
What standard is available for property measurement
January 2018 RICS property measurement 2nd edition
International property measurements standards 15 January 2023
what is longitude and latitude
a coordinate system that describes a location on Earth’s surface:
What is Geodesy
Geodesy is the science of measuring and mapping the Earth, including its shape, size, and gravity field
Satellite CRS
EPSG 3857 - pseudo mecreotr
projected coordinate system used for rendering maps in Google Maps
What is a coordinate reference system
a standardized way to describe a location on Earth using a set of three numbers, or coordinates
what do i mean by scale
scale of a map is the ratio of a distance on the map to the corresponding distance on the ground