What is the maximum slope ratio of 2:1 related to in site development?

The maximum slope ratio of 2:1 refers to the steepness of a slope, where for every two units of horizontal distance, the elevation changes by one unit. This slope ratio is significant in site development primarily for preventing soil erosion. A slope that is too steep can increase the likelihood of soil being washed away during rainfall or irrigation, as water flows more quickly down such slopes and has greater energy to dislodge soil particles.

By adhering to a 2:1 slope, designers and engineers can create a more stable surface that minimizes erosion risk. Such a slope allows for better infiltration of water into the soil, reducing runoff and the potential for gully formation or landslides. This balance is crucial in maintaining the integrity of landscapes and ensuring the longevity of structures and vegetation that may be placed nearby. Thus, the focus on preventing soil erosion makes the 2:1 slope ratio particularly important in site development practices.