Problem: Trigonometric leveling (base of object is accessible) In order to determine the quantity of filling materials for embankment in a construction site, it is required to determine the difference in elevation (DE) between A and B. The instrument was set up at point A and took a rod reading at point B. A Stadia rod 55.56m B Horizontal distance AB =55.56m Height of set up @point A= 1.20m Rod reading = 1.80m @ point B Zenith angle to point B = 75°10' DE VD 1. Determine the difference in elevation between A and B. a) 13.19m b) 14.11m c) 13.59 d) 12.88m 2. If the finished grade of embankment is sloping from A to B, determine its slope. a) 24.56% b)25.40% c) 19.88% d) 15.56%

Q: Given the three-wire leveling note below, find the elevation of BM2 and perform the customary…

A: Given: The data for the three-wire levelling is given as: To Determine: The elevation of BM2 and…

Q: Q#1: A profile levelling is carried out and consecutive readings were observed on staff rod along a…

A: Using the following formulae: RL+BS=HI HI-(IS/FS)=RL BS-IS=Rise/Fall Previous RL±Rise/Fall=Next RL

Methods of Surveying

Surveying is the practice to determine the relative three-dimensional positions of various points on the earth’s surface. This is done by computing the vertical and horizontal distances, angles between the points, collecting the observations, and plotting them on a map of any appropriate scale. Accuracy can be achieved by using the latest instruments like a theodolite, tachometer, etc. Leveling is a subdivision of surveying where the objective is to locate the elevation of objects considering a datum level.