Silt Fence Calculator
Estimate silt-fence fabric rolls, support stakes, installation trench volume and material cost from run length, roll overlap, stake spacing and waste.
Default project preview
6 rolls
Effective roll length
97 ft
Order length
561.6 ft
Purchased fabric
600 ft
Support stakes
90
Calculator
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Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Effective roll length equals roll length minus joint overlap. Fabric is rounded up after a waste allowance; stakes use run length and spacing, with one additional end stake per separate run.
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FAQ
Silt Fence Calculator questions
Should silt fence cross a drainage channel?+
Silt fence is generally intended for sheet flow, not concentrated flow. Follow the approved site detail.
Why count separate runs?+
Each run needs terminal support, so several runs use more stakes than one continuous line.
Does the trench volume represent disposal?+
No. The excavated soil is commonly used to anchor and backfill the fabric according to the installation detail.