China Naming Network - Almanac query - How to draw elevation projection map of foundation pit
How to draw elevation projection map of foundation pit
Foundation pit elevation projection, specific steps:
Step 1: Cut the terrain surface with a set of equally spaced horizontal planes to obtain a set of horizontal intersecting lines, which are called contour lines.
Step 2: project onto the horizontal projection plane (datum plane) and mark their respective elevations to obtain elevation projection map, also known as topographic map.
Step 3: The height of the section above the datum is called elevation or elevation, and the unit is m..