Science · Soils
Sand Base
A sand foundation whose function depends on grading, depth, compaction and drainage outlets.
Construction layer descriptor
Profile
- Grading
- Fine and coarse sands differ hydraulically
- Depth
- Storage scales with effective layer thickness
- Compaction
- Placement affects porosity
- Outlets
- Water must have a viable drainage path
Water & soil targets
- Moisture (VWC)
- Site-calibrated; measure field capacity and dry-down
- Salinity tolerance
- Not determined by this label; measure EC and relevant ions
- Drought tolerance
- Depends on usable storage, rooting depth and vegetation
Measure retention, infiltration and layer depths in place. Texture or construction labels do not define a universal irrigation threshold.
Problems to watch
- Settling
- Clogging by fines
- Rapid drying
Stress signs
- Depressions
- Ponding
- Dry surface patches
Where you'll find it
- Sports-surface foundations
- Landscape drainage layers
More soils
All Science profilesGeneral agronomic guidance and typical ranges; actual targets vary by site, soil, climate and season.