Construction Supervisor License Practice Exam 2025 - Free Construction Supervisor Practice Questions and Study Guide

The minimum slope permissible for the ground adjacent to the foundation is essential to ensure proper drainage away from the structure. A slope of 1:48 (or approximately 2%) effectively directs water away from the foundation, which helps prevent water accumulation and minimizes the risk of foundation problems such as settling or damage from moisture intrusion.

A slope of 1:48 ensures that even in light rain, water drains away effectively, reducing the likelihood of erosion or water pooling near the foundation. This is crucial because adequate drainage is a key aspect of site grading, helping to maintain the integrity and longevity of the foundation and the overall building.

In contrast, steeper slopes, such as those suggested by the other options, may be too aggressive for certain types of soil or site conditions, which could lead to erosion or may not be necessary for adequately directing stormwater runoff. The 2% slope balances effective drainage requirements while considering site usability and soil stability. Therefore, selecting this slope helps meet building codes and best practices in construction.