## 4 Discussion
Once the construction is located, the outline of the house described by several new points will appear on the topographic map (minimum 4). At these new points, it is necessary to specify: the coordinates on the three dimensions according to which the elevation is specified, and the distances of the construction location from the property limits. The determination of the coordinates in the plan does not raise any concerns, but there are difficulties in obtaining the real vertical elevation especially if the terrain has a high slope. The article proposes a method for determining the exact elevation of the land at the corners of the building, and in fact for the entire contour. Depending on the contour dimensions, the designer establishes a position of the horizontal plane, a plane that corresponds to the finished floor of the ground level. The decision to establish this quota should be cont \begin{table}
\begin{tabular}{c c} \hline \hline  & **Errors (First Method against Second Method)** \\ \hline Lowest error & 0\% \\ Average error & 0.61\% \\ Highest error & 1.17\% \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Errors of the first method obtained from 100 million experiments. Figure 13: Running time comparison of the two methods (100 million experiments). embankments that will be made. The optimum is obtained when the excavation volume is approximately equal to the filling volume. The article solves this problem in Section 3.3. For the design of a road, a primary route of the road is made on a topographic map and road recognition is performed. A final design of the road follows both along its entire length and on its cross-sections. Figure 14 shows with a red line the optimal trajectory of a road depending on the elevation of the natural land. Because the considered road is a highway, the rules impose stricter restrictions on the slopes. If the allure of the natural terrain in certain areas is followed, the maximum allowed inclination of the road will inevitably be exceeded. As it can be seen in Figure 14, in these areas, measures must be taken to straighten the slope, such as fillings, excavations or the provision of bridges and viaducts, tunnels respectively. Through detailed awareness of the elevations and the inclination of the land in the points near the road, an optimal vertical tracing of the road can be established so that we have minimum excavations and fillings for an imposed road slope, or we can optimize the lengths of the bridges, respectively tunnels [12]. When designing a new road or railway, a number of initial design factors must be taken into account, such as: road category, design speed, width of a traffic lane, number of lanes, traffic frequency, equipment size, etc. Depending on the route imposed on the road, there are also other specific aspects that must be taken into account:  
1. Avoid high erosion hazard sites, particularly where mass failure is a possibility. 2. Utilize natural terrain features such as stable benches, ridgetops, and low gradient slopes to minimize the area of road disturbance. 3. If necessary, include short road segments with steeper gradients to avoid problem areas or to utilize natural terrain features. 4. Avoid midslope locations on long, steep, or unstable slopes. 5. Locate roads on well-drained soils and rock formations which dip into slopes rather than areas characterized by seeps, highly plastic clays, concave slopes hummocky topography, cracked soil and rock strata dipping parallel to the slope. 6. For logging road, utilize natural log landing areas (flatter, benched, well-drained land) to reduce soil disturbance associated with log landings and skid roads. 7. Avoid undercutting unstable, moist toe slopes when locating roads in or near a valley bottom. 8. Roll or vary road grades where possible to dissipate flow in road drainage ditches and culverts and to reduce surface erosion. 9. Select drainage crossings to minimize channel disturbance during construction and to minimize approach cuts and fills. 10.