Quick answer
Give each run or grade change its own row, record trench geometry and outlet/reference conditions, then use the calculator for aggregate and pipe quantities.
Measurement & layout
French Drain Field Worksheet
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Field sketch
Drain route sketch
Mark segments, stations, grade breaks, inlet/outlet points and obstacles.
| Segment | Length | Trench width | Trench depth | Pipe / OD | Grade / station reference | Outlet / termination | Aggregate / field notes | Row action |
|---|---|---|---|---|---|---|---|---|