PROFILE LEVELING

• PROFILE LEVELING -used to determine difference of elevation between points at designated short measured intervals along an established line to provide data from which a vertical section of the ground surface can be plotted
• CROSS-SECTION LEVELING -obtaining the representation of the ground surface on either side of the center line. -short profiles at right angles to the line of the work are usually plotted at regular intervals
• PROFILE LEVELING -The process of determining differences of elevation along a fixed line at designated short,

  measured intervals, It is executed to provide data from which a vertical section of the

  measured intervals, It is executed to provide data from which a vertical section of the ground surface can be plotted
• PROFILE -A curved line which graphically portrays the intersection of vertical plane with the surface of the earth. It depicts ground elevation of selected critical points along a surveyed line and the horizontal distances between these points
• STATIONING -Numerical designation given in terms of horizontal distance of any point along a profile line from the starting point
• FULL STATIONS -Points which are established along the profile level route at uniformly measured distances.
• PLUS STATION -Any other intermediate point established along a profile level route which is not designated as full station
• VERTICAL EXAGGERATION -The process of drawing the vertical scale for a profile much larger than the horizontal scale in order to accentuate the difference in elevation.
• PROFILE PAPER -A special heavy grade graphing paper used for plotting profiles
• PROFILE LEVELING ROUTES -may be run as a single straight line or as a series of straight lines connected by curves
• THE RATIO OF EXAGGERATION DEPENDS UPON:

  • USE OF THE PROFILE

  • CHARACTER OF TERRAIN

  • HORIZONTAL SCALE