Reciprocal Leveling Lab Report
UNIVERSITY OF THE PHILIPPINES
DEPARTMENT OF GEODETIC ENGINEERING
GE 155.2 VERTICAL CONTROL NETWORK LABORATORY
LABORATORY EXERCISE NO. 3
Reciprocal/River-Crossing Leveling
Vince Ruel C. Alonte, Chriselina Maria C. Clemente, Honey Let S. Dagan, Ryan Kevin N. Japor,
Alan Tristan C. Legaspi, Bertram David B. Matabang, and Katelene P. Panlilio
Department of Geodetic Engineering, College of Engineering, University of the Philippines Diliman, 1101 Quezon City, Philippines
Introduction
Leveling is a survey operation of measuring vertical distances to determine elevations with respect to a given datum. One type of leveling is Reciprocal Leveling or River-crossing Leveling, reciprocal leveling is used in areas where the it is difficult to keep the backsight and foresight short and equal, such as river areas. This type of leveling involve two set-ups, one at each riverbank. Moreover, two reading are take in each set up, one far and one near. The laboratory exercise aims to run a reciprocal leveling from Malcolm Hall to Benton Hall across the
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There are four (4) types of leveling in surveying: direct leveling, trigonometric leveling, barometric leveling, and stadia leveling.
The most commonly used method of leveling is the direct leveling. The measurements in this method are directly from the leveling instrument. Direct leveling is divided furthermore into different types based on the observation points and instrument positions. These types are: simple leveling, differential leveling, fly leveling, profile leveling, precise leveling, and reciprocal leveling.
Reciprocal leveling is performed when it is not possible to locate the leveling instrument in between the intervisible points. This case appears in case of water bodies (e.g. ponds, rivers) in between two points. Instrument is set nearer to 1st station and sighted towards 2nd
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