Surveying Computation

At the end of this course, students should be able to: 1. explain the use of figures and processes involved in surveying computations; 2. select and manipulate formulae for calculations in surveying and geoinformatics; and 3. carry out treatment of misclosures and attainable accuracy in surveying computations.

Basic concept and processes of surveying computations. Field and office computations, decimal and significant figures, accurate and inaccurate figures, rounding off and approximation. Care of computation machines. Methods used in surveying computation. Selection and manipulation of formulae for surveying computations. Computations of distances and angles with their various corrections. Computation of grid, magnetic, whole circle and reduced bearings from true bearing. Computations of rectangular coordinates from one station to the other, Computations of bearing and distances from coordinates of known points. Closing misclosure, treatment of misclosure and attainable accuracy. Area computations of surveying networks, Computation of omitted data in a closed network observation. Computations involved in the booking of field observations.