Classes 1b and 2 soils are considered suitable for what purpose?

Classes 1b and 2 soils are recognized for their capacity to effectively support standard systems based on texture. These soil classes are generally associated with good drainage and aeration qualities, which are essential for sustaining healthy plant growth and ensuring efficient operation of standard wastewater treatment systems.

Standard systems are typically designed for soils that provide optimal conditions for absorption and treatment of effluent. The classification takes into account factors such as soil texture, permeability, and moisture retention—all crucial for determining the appropriate wastewater management practices. Therefore, identifying soil classes that fit these criteria enables proper wastewater treatment and prevents environmental contamination.

Other purposes mentioned, such as non-standard systems or specific types of irrigation, do not align with the recognized applications of these soil classes. Additionally, heavy construction often involves different soil characteristics that require more robust support and stability than what Classes 1b and 2 typically provide. Hence, these soils are specifically noted for their suitability for standard systems based on texture.