Ashok Sapkota

Errors in levelling can be classified into three main categories: Personal Errors Errors Due to Natural Causes Instrumental Errors i) […]

Over time, surveyors and engineers have developed several methods of levelling, each suited to different conditions and requirements. These methods

Bench Marks A benchmark is a permanent reference point with a known elevation used in surveying and construction. Benchmarks are

Adjustment of a Level Adjustment of a Level refers to the process of aligning and calibrating a leveling instrument to

Principle of Levelling The principle of leveling is based on establishing a horizontal line of sight and determining the vertical

Levelling Staff A levelling staff is a crucial instrument in surveying, consisting of a straight, rectangular rod typically made of

Levelling is the process of determining the relative heights or elevations of points on the Earth’s surface, whether on the

Plane table surveying can be performed using one of several methods, which include radiation, traversing, intersection, and resection. The choice

Errors in Plane Table Surveying Plane table surveying, while a useful technique, is subject to various errors that can affect

Plane Table Surveying is a method of surveying where field observations and plotting occur simultaneously. This technique allows for real-time

Errors in Compass Traversing Compass traversing is susceptible to various errors that can be broadly categorized into two main types:

Magnetic Declination Magnetic declination is the horizontal angle measured between true north (the direction of the geographic North Pole) and