Methods of Levelling Used in Surveying

Methods of Levelling :¬† The important methods of levelling used while surveying are as follows : Barometric Levelling. Trigonometric Levelling. Spirit Levelling. Differential Levelling. Reviprocal Levelling. Profile Levelling. Barometric Levelling : It makes use of the phenomenon that difference in elevations between two points is proportional to the difference atmospheric pressure at these points. Trigonometric … Read more Methods of Levelling Used in Surveying

Surveying : Introduction to the Concept of Surveying

Introduction to Surveying Surveying is the science and art of determining the relative positions of various points above, on or below the surface of the earth. The relative positions in surveying are determined by measuring horizontal distances, vertical distances (elevations}, horizontal angles and vertical angles accurately by using various surveying instruments. Important Objectives of Surveying … Read more Surveying : Introduction to the Concept of Surveying

Ceramics : Properties & Classification of Ceramic

Definition of Ceramics : The word ceramics is of Greek origin ( keromos ) meaning potter’s earth or day ceramics. In present days, Ceramic is used to deflate wide range of silicates, metallic oxides and other combinations. Clay products are the most Common and appropriate example of ceramic materials. General Properties of Ceramics : Ceramics … Read more Ceramics : Properties & Classification of Ceramic