Drainage · French-drain materials
Measure the trench. Plan the drainage layer.
Convert trench dimensions into washed stone, perforated pipe, landscape fabric, allowance, estimated weight, and editable material cost.
← Trench length →← Trench width →↕ Trench depth↔ Pipe diameterFabric wraps sides + overlap
1 Measure the trench and pipe
2 Plan fabric, stone, and allowance
3 Enter supplier prices
Results update automatically · stone volume excludes the pipe cylinder
Transparent calculation
Trench volume minus pipe volume.
Stone fills the rectangular trench around the pipe. Fabric width covers the bottom and both sides plus overlap; every assumption remains editable.