![]() ![]() ![]() 17.5).Ĭontour maps are extremely useful for various engineering works:ġ. If contour lines cross each other, it shows existence of overhanging cliffs or a cave (Fig. If contour lines are meeting in some portion, it shows existence of a vertical cliff (Fig. Contour lines generally do not meet or intersect each other.ġ1. Contour lines with V-shaped with convexity towards higher ground indicate valley (Fig. Contour lines with U-shape with convexity towards lower ground indicate ridge (Fig. Approximately concentric closed contours with increasing values towards centre indicate hills.Ĩ. Approximately concentric closed contours with decreasing values towards centre (Fig. Irregular contours indicate uneven surface.Ħ. Equally spaced contour indicates uniform slope.ĥ. Closely spaced contour indicates steep ground.Ĥ. Widely spaced contour indicates flat surface.ģ. Contour lines must close, not necessarily in the limits of the plan.Ģ. The contours have the following characteristics:ġ. On contour lines the level of lines is also written. 17.1 shows contours in an area with contour interval of 1 m. The contour lines in an area are drawn keeping difference in elevation of between two consecutive lines constant. Such lines are drawn on the plan of an area after establishing reduced levels of several points in the area. Request A Quote.A contour line is a imaginary line which connects points of equal elevation. This survey is imparted in a precise and prompt manner by our experienced team members who always strive hard to gain the maximum satisfaction of the clients by providing them with well managed survey. Our reputation in land survey industry has largely been counted by the shooting popularity of our offered Contour Survey. It provide the basis for coloring method.By reading contour interval it is easy to sort out the different elevation of the landscape. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |