What material is required below underground conduits as specified by Wendy's?

The requirement for sand below underground conduits as specified by Wendy's is crucial for a few reasons. Sand serves as an excellent material for providing a stable and protective environment for electrical conduits laid underground. Its composition allows for adequate drainage, preventing water accumulation that could lead to corrosion or damage to the conduits over time.

Additionally, sand has a high degree of compaction, which helps in avoiding shift or movement of the conduits once they are installed, thereby maintaining the integrity of the electrical system. The smooth texture of sand also minimizes the risk of abrasion to the conduits, which can occur from harsher materials like gravel or rock.

While other materials like soil or gravel might not offer the same level of drainage or protection, and concrete is too rigid and imposing for this application, sand strikes the ideal balance for both safety and durability in underground conduit installations. Therefore, the specification of sand below underground conduits aligns perfectly with best practices in electrical installation standards.