Slope refers to the steepness of the topography. As the slope increases, the steepness increases. Slope calculations are necessary in order to evaluate constructability on the site, assess cut and fill volume calculations, and determine inverts of pipes. The slope will impact the type of equipment used to construct the system and the appropriate final treatment and dispersal components.
Typical slope calculations involve the intersection of existing slopes to proposed slopes in cuts or fills. Slope calculations are also used when a drainage pipe buried to discharge intercepted groundwater needs to be daylighted. Additionally, slope calculations involve inverts of pipes down-gradient
