Washed Sand Subsoil

An alkaline, non-saline, non-calcareous, stone-free sand with a single grain structure. The low organic matter content aligns with the requirements for structural subsoil, and the high permeability rate ensures efficient drainage. Additionally, the sufficient total porosity indicates that a portion of the retained water would remain available to plants.

The engineering properties of the sample, particularly its California Bearing Ratio (CBR) and particle size distribution, suggest it can function effectively as a structural subsoil under compacted conditions. However, as its performance is moisture-dependent, careful moisture management during installation is recommended to maintain stability.

Overall, the sample meets the key horticultural and geotechnical criteria for structural subsoil use in hard landscapes. To optimize plant establishment and performance, selecting species that tolerate alkaline conditions and incorporating an irrigation strategy where necessary is advisable.

Organic Matter (LOI): <0.5% w/w.