Geotextile Filtration AOS Calculator
Geotechnical & Drainage Engineering: Evaluate soil retention criteria, maximum allowable Apparent Opening Size ($O_{95}$), and minimum permittivity ($\psi$) per AASHTO M288.
Base Soil Particle Size Distribution
85% of soil particles are finer
Geotextile Retention & Permittivity Requirements
Max Allowable AOS
-- mm
US Standard Sieve
--
Min Permittivity ($\psi$)
-- s⁻¹
Anti-Clog Min $O_{95}$
-- mm
Retention Criteria: --
Recommended Fabric Type: --
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