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Material (700-799)

738GEOGRIDS

PA · 2026 Standard SpecificationsBook pages 752752View official source ↗

Extended -Term Temporary RECP (24 Month Functional Longevity) Type Product and Material Description Slope Applications Channel Applications Machine Direction Tensile Strength (lb/ft)(1) Transverse Direction Tensile Strength (lb/ft) Material Thickness

(in)Ground

Coverage (%) Minimum Seed Germination Enhancement (%)(3) Minimum Weight Per Unit Area (oz /yd2)(4) Maximum Slope (H:V)(6) Maximum Allowable C-Factor at Maximum Slope(5) Shear Stress (lb/ft2)(2) 3.A Open Weave Textile – an open weave textile composed of processed slow degrading natural or polymer yarns or twines woven into a continuous matrix. 2:1 ≤0.05 ≥ 2.0 ≥ 100 ≥ 40 ≥ 0.20 ‐ ≤ 0.40 ≥ 40 200 ≥ 11.0 3.B Erosion Control Blanket and Open Weave Textile - An erosion control blanket composed of slowly degrading polymer or natural fibers mechanically bound together between two slowly degrading synthetic or natural fiber nets to form a continuous matrix 1.5:1 ≤ 0.05 ≥ 2.00 ≥ 100 ≥ 40 ≥ 0.20 ‐ ≤ 0.50 ≥ 50 ‐ ≤ 95 200 ≥ 8.0

(1)Tensile Strength machine direction according to ASTM D6818.
(2)The required minimum shear stress RECP (unvegetated area) can sustain without physical damage or excessive erosion (> 0.5 inches soil loss) during a 30 minute

flow event in large -scale testing. An acceptable large -scale test method is ASTM D6460 or equivalent approved by the Representative.

(3)Seed Germination Enhancement according to ASTM D7322.
(4)Weight Per Unit Area: ASTM D6475 for Temporary Erosion Control Blankets.
(5)Cover -Factor (C -Factor) measured according to ASTM D6459.
(6)This value should represent the maximum gradient the product should be recommended for rainfall/slope application .

806.2( a) 806.2(b) Long -Term Temporary RECP (36 month Functional Longevity) Type Product and Material Description Slope Applications Channel Applications Machine Direction Tensile Strength (lb/ft)(1) Transverse Direction Tensile Strength (lb/ft) Material Thickness

(in)Ground

Coverage (%) Minimum Seed Germination Enhancement (%)(3) Minimum Weight Per Unit Area (oz /yd2)(4) Maximum Slope (H:V) Maximum Allowable C-Factor at Maximum Slope(5) Maximum Shear Stress (lb/ft2)(2) 4.A An open weave textile composed of processed slow degrading natural or polymer yarns or twines woven into a continuous matrix. 1:1 ≤ 0.05 ≥ 2.25 ≥ 100 ≥ 40 ≥ 0.20 ‐ ≤ 0.40 ≥ 50 200 ≥ 20.0 4.B An erosion control blanket composed of processed slow degrading natural or polymer fibers mechanically bound together between two slow degrading synthetic or natural fiber nettings to form a continuous matrix. 1:1 ≤ 0.05 ≥ 2.25 ≥ 100 ≥ 40 ≥ 0.20 ‐ ≤ 0.50 ≥ 50 ‐ ≤ 95 200 ≥ 8.0

(1)Tensile Strength machine direction according to ASTM D6818.
(2)The required minimum shear stress
Source: Pennsylvania Department of Transportation Specifications, 2026 Edition. Pages 752752 of 1,522.