Maps & Surveying Flashcards
(6 cards)
The approximately rectangular subdivisions of township and section
Aliquot
Cretes the tax roll annually by identifying, locating, and valuing all property subject to ad valorem taxes in a county
Assessor’s Office
Survey to a ready known elevation like a manhole cover. It’s the height up the rod
Backsighting
Point of reference by which something can be measured; permanent mark established at a known elevation that is used as the basis for measuring the elevation of other topographical points.
Benchmark
Direction of a line measured in degrees (0), minutes (‘) and seconds (“); the direction or position of something, or the direction of movement, relative to a fixed point. It is usually measured in degrees, typically with magnetic north as zero.
Associated with property lines.
Bearings
consists of synthesizing information from a variety of sources and consolidating it into a shared plan document. It provides common points of reference relevant to all plan sheets;
Legal conditions: property lines, easements, other
• Topography: contour lines, significant spot elevations
• Existing buildings, other structures to remain
• Proposed structures
• Existing and proposed hardscape (sidewalks, driveways, etc.)
• Significant subsurface features – underground lines, common trenches
• Utility poles, boxes
• Existing trees to remain
• Other significant site features that should be protected – drainage swales, any areas to be off limits for wildlife, vegetation, or cultural protection
• If there is a common layout structure that provides coordination between the trades, that may be shown as well, ie. coordinate grid systems, station points or benchmarks
Base Map
