What materials should be used for fill in a recreation area?

In a recreation area, the choice of fill materials is crucial for ensuring stability, drainage, and safety. Gravel and silt can effectively provide a solid base while allowing for adequate drainage. Gravel is particularly beneficial as it promotes drainage, reducing the likelihood of water pooling, which can damage the area and create unsafe conditions for recreational activities. Silt, when used in conjunction with gravel, can help create a more stable and compact surface that maintains its integrity over time, accommodating various recreational uses.

The other materials mentioned are less suitable for use in recreational areas. For example, sand and concrete might not provide the necessary flexibility and drainage needed for such spaces. Loam and clay can become compacted and retain water, which is not ideal for recreational purposes where a firm yet adaptable surface is required. Peat and rocks may pose challenges with stability and could create uneven surfaces that are unsafe for users.