Faculty of Applied Engineering and Urban Planning. Civil Engineering Department. Surveying. First Semester 2010/2011. Introduction. Lecture 2. Content. Definitions of Surveying and Surveyor Figure of Earth Types of Surveying Units of Measurement Scale of Surveys. Definitions.
Civil Engineering Department
First Semester 2010/2011
RThe figure of the earthand itsrelation to survey measurements
a : semi major axis
b : semi minor axis=a(1-f)=a(1-e²)½
f (flattening) = ( a – b ) / a ( the value of f is between 0 “ sphere ” and 1 “ flat surface ”.
e : eccentricity (e² = (a² - b²)/a² = 1-(b²/a²) =2f –f²)
aThe reference for measurements depend on the area to be surveyed as follow :
Convert the angle 213° 24΄ 47΄΄ into Decimal and Radian systems.
Convert the angle 115g 2c 14cc into Sexagesimal system.