This architectural drawing is a Longitudinal section of the lower level of earthwork in detail AutoCAD 2D drawing, CAD file, dwg file. A longitudinal section, often known as a structure's side elevation, is a section taken along a structure's length. In order to calculate the theoretical gradient of the proposed construction based on the current surface conditions, longitudinal sections of roads, canals, bridges, etc. are very helpful. For more details and information download the drawing file. Thank you for visiting our website cadbull.com.