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P550® Overview | Problems Solved


P550®   |   Performace Profile
P550 In Action!
Phase 1Phase 1
Unvegetated

Unprotected seed and soil are highly susceptible to erosion. Upon installation, the P550’s polypropylene fiber matrix and corrugated matting structure provide a uniform mulch layer and effective erosion protection for seed and soil under flow-induced shear stresses up to 4 lbs / ft2 (191 Pa). 		Phase 2Phase 2
Vegetation Establishment

The tender stems and undeveloped root systems of immature vegetation provide little protection for the soil surface and are prone to damage or removal at shear stresses of only 0.6 lb / ft2 (29 Pa).* The P550 continues providing erosion protection between, and structural support for, developing plants – increasing the permissible shear stress of new vegetation up to 12 lbs / ft2 (576 Pa).		 Phase 3Phase 3
Vegetation Maturity

Under flow-induced shear stress of only 1.0 lb / ft2 (48 Pa), unreinforced mature vegetation may allow significant soil loss and experience physical damage.** The P550 reinforces soils and anchors vegetation roots and stems – increasing the permissible shear stress of the permanent vegetative stand up to 14 lbs / ft2 (672 Pa).

* Based on FHWA HEC#15 Permissible Shear Stress for Class D Vegetation [2 – 6” tall (5 – 15 cm), fair stand].
** Based on FHWA HEC#15 Permissible Shear Stress for Class C Vegetation [6” tall (15 cm), good stand].

All Vmax3 products have been tested by AASHTO's National Transportation Product Evaluation Program for RECPs.
GSA Contract Number GS-07F-8870D : 04/01/2004-03/31/2009