Material Tested properties

Wide-width Tensile Strength kN/m

Elongation at Break %

Thickness mm

Permittivity 1/s

Design Site conditions

Design Load kN/m

Combined Reduction Factor x

Factor of Safety

— x

Ultimate strength against design load

Design Check

Allowable Strength: — kN/m
Utilisation of Allowable: — %
Secant Tensile Modulus: — kN/m
Hydraulic Permeability: — m/s

The reduction factor should combine installation damage, creep, chemical and biological degradation. Values below 2.0 are rarely defensible for a buried application.

Geotextile Tensile Strength & Permeability Modeler — free, with the formula and a worked example, at Textile School.