Vmax3 C350 Turf Reinforcement Mat | North American Green

Vmax³®
C350 Permanent Turf Reinforcement Mat

Permanent Turf Reinforcement Mat

Vmax³ C350 is composed of a permanent, high-strength, three-dimensional matting structure, incorporated with a 100% coconut-fiber matrix that supplements the permanent matting structure’s initial mulching and erosion control capabilities for up to 36 months.

C350 is designed to provide long-term, pre-vegetated erosion protection and permanent turf reinforcement in a range of applications that include critical-flow channels, stream banks, and shorelines.

Proven in extensive laboratory and field research, C350’s high-strength, 3-D matting structure boosts the shear resistance of vegetation up to an amazing 12 lbs/ft² (576 Pa).

With permanent erosion protection equivalent to that of 30” (0.76 m) rock riprap, C350 provides a cost-effective, environmentally friendly, “green” solution to erosion control projects for severe conditions.

Top Net
Polypropylene
8.0 lbs/1,000 ft²
(3.91 kg/100 m²) approx. wt.

Center Net
Polypropylene, corrugated
24.0 lbs/1,000 ft²
(11.7 kg/100 m²) approx. wt.

Coconut Fiber
0.50 lbs/yd²
(0.27 kg/m²)

Bottom Net
Polypropylene
8.0 lbs/1,000 ft²
(3.91 kg/100 m²) approx. wt.

Thread
Permanent

C350 Performance Profile

Phase 1
(unvegetated)

Unprotected seed and soil are highly susceptible to erosion. Upon installation, the C350’s coconut 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 3.2 lbs/ft² (153 Pa).

Phase 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 lbs/ft² (29 Pa).* The C350 continues providing erosion protection between, and structural support for, developing plants – increasing the permissible shear stress of new vegetation up to 10 lbs/ft² (480 Pa).

Phase 3
(vegetation maturity)

Under flow-induced shear stress of only 1.0 lbs/ft² (48 Pa), unreinforced mature vegetation may allow significant soil loss and experience physical damage.** The C350’s corrugated matting structure reinforces soils and anchors vegetation roots and stems – increasing the permissible shear stress of the permanent vegetative stand up to 12 lbs/ft² (576 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 [6” tall (15 cm), good stand].

Product	Typical Applications			Limiting Shear Stress¹ Flow Duration				Permissable Velocity²		FHWA FP-03 Category	ECTC Category	Typical Projects
				Bare Soil		Vegetated		Permissable Velocity²
				0.5 hrs	50 hrs	0.5 hrs	50 hrs	Unvegetated	Vegetated
C350	1:1 & Greater Slopes	High-Flow Channels	Shorelines	3.2 (153)	3.0 (144)	12.0 (576)	10.0 (480)	10.5 (3.2)	20.0 (6.0)	Type 5.A, B and C	Type 5.A, B and C	Drainage Ditches, High-Flow Areas, Shoreline Protection