quantification:  

Quantification is the calculation of the unit number, size or proportion of a thing, especially, by numerical means. Quantification is a process by which observation is expressed in numerical terms to assist in analysis and comparison.

slope:
It is called slope to the inclination that is given to the lands so that they support one another. The profile of any slope is formed by a right triangle, in which the long side, opposite the right angle

The foundation :
is the set of structural elements whose mission is to transmit the loads of the building or elements supported on the floor by distributing them so that they do not exceed their admissible pressure or produce zonal loads.