Construction World

Methods Of Plane Table:  Methods of Plane tabling can be divided into four distinct heads: Radiation Intersection Traversing Resection The first two methods are generally employed for locating the details while the other two methods are used for locating the plane table stations. Radiation: In this method, a ray is drawn from the instrument station towards the point, the distance is measured between the instrument station and that point , and the point is located by plotting to some scale the distance so measured. Evidently, the method is more suitable when the distances are small (with a tape length) and one single instrument can control the points to be detailed. The method has a wider scope if the distances are obtained tacheometrically with the help of telescopic alidade. Intersection (Graphical Intersection): Intersection is resorted to when the distance between the point instrument station is either too large or cannot be measured accurately due to som...

What is contour? explain contour interval, necessity of contour plotting?? Contour:- A contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of ground is intersected by the level surface. a contour line is a line on the map representing a contour.

An increase in lime content behind a certain values make it difficult to combine with other compounds and free lime will exits in the clinker which causes unsoundness in cement. An increase in silica content at the expense of Alumina and ferric oxide will make the cement

Bouge’s Equation :- The Bouge calculation is used to calculate the approximate properties of the four main minerals in Portland cement clinker.