What material is required below underground conduits per Wendy's specifications?

The requirement for sand below underground conduits per Wendy's specifications is based on the need to provide adequate support and protection for the conduits while allowing for proper drainage and minimizing the risk of moisture accumulation. Sand is a suitable material because it has good drainage properties, preventing water from pooling around the conduits, which can lead to corrosion and other damage. Additionally, sand is easier to work with and helps in achieving a level and stable base for the conduits, reducing the likelihood of shifting or settling over time.

Different materials such as gravel, dirt, or cement might not meet these specifications as effectively. Gravel, while also having good drainage properties, can create uneven surfaces and may not fill gaps as thoroughly as sand. Dirt can retain moisture and become compacted, which is not ideal for drainage. Cement would create a rigid environment that could lead to strain on the conduits, as it doesn't accommodate expansion or contraction of the surrounding soil. Thus, sand is the material that best meets the requirements for underground conduits in this context.