Civil & Stormwater Drainage
French Drain & Stormwater Sizer
Prevent yard flooding and basement hydrostatic pressure. Calculate trench cubic yards, washed stone backfill, non-woven filter fabric, and pipe flow rate.
Trench Dimensions & Pipe
Linear Feet
Bill of Materials & Hydraulics
Washed Gravel
5.9
Cubic Yards (#57 Stone)
Gravel Weight
8.3
Tons
Geotextile Fabric
480
Sq Ft Non-Woven
Perforated Pipe
80 LF
4" Perforated
Max Flow Capacity
80 GPM
At 1% slope
Est Material Cost
$1,150
DIY Material BOM
Discharging Behind a Retaining Wall?
Calculate retaining wall block courses and hydrostatic pressure relief backfill.
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