artificial foundation bed

filled soil foundation with rock chunk

artificial foundation

artificial foundation pile

artificial soil

artificial soil and water loss

artificial soil erosion

artificial soil filter

artificial soil infiltration

artificial soil solution

artificial soil substrate

Back Filled Soil

bubble-filled bed

culvert under deep filled soil

Depth of filled soil

dredger filled soil

EMBANKMENT FILLED SOIL

FILLED SOIL

foundation filled subsoil with large block stones