Week 1/2 BASIC OF SURVEYING

Week 1/2 BASIC OF SURVEYING

1. Type of surveys

   • Plane Surveying
   • Geodetic Surveying
   • Preliminary survey
   • Layout surveys
   • Control Surveys
   • Topographic survey
   • Hydrographic survey
   • Route survey
   • Property or cadastral survey
   • Aerial survey
   • Construction survey
   • Final 'as built' survey

2. Errors

   • Mistakes or gross errors
   • Systematic errors
   • Random or accidental errors

3. Surveying Instrument

   • Measuring tape
   • Optical square
   • Compass
   • Ranging rods
   • Level instrument and staff
   • Transit or theodolite
   • Total station instrument
   • GPS-global positioning system

4. Accuracy and Precision

   • Accuracy - NEAREST VALUE to its true value
   • Precision - REPEATING MEASUREMENT with CONSISTENTLY small variations in the measurements