Madsen Land Surveying, Inc.
Providing quality land surveying services since 1979.

 

   

  

Topographic Surveys

Topographic surveys are surveys intended primarily to show the relief, or change in elevation of an area of land.  Topographic surveys also usually show other planometric features, such as buildings, paved surfaces, located utilities, and distinct changes in the surface of the land.

Topographic surveys are commonly used in the early stages of planning for major property improvements, or for changes in the landscape that may impact drainage or water flow.  Topographic surveys can also be used to calculate volumes of earth in advance or following significant earthwork. 

  

 topo

  

How to read bearings and azimuths.

Azimuth Circle

 

Typical section breakdown format.

Section

 

Some handy length conversions.

1 mile = 5280 ft = 80 chains

1/2 mile = 2640 ft = 40 chains

1/4 mile = 1320 ft = 20 chains

1 chain = 4 rods = 66 feet

1 rod = 16.5 feet

1/4 mile = 80 rods

1 meter = 3.2808 feet

Approximate aliquot part areas of a typical section.

1 Section = 640 acres

1/2 Section = 320 acres

1/4 Section = 160 acres

1/8 Section = 80 acres

1/16 section = 40 acres