919 — GEOTEXTILES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 900 MATERIALS SECTION 919 — GEOTEXTILES
919.01 Geotextile Requirements
Geotextiles used on Administration projects shall participate in the National Transportation Product Evaluation Program (NTPEP) and conform to the Contract Documents and MSMT 732. Geotextiles shall be manufactured from fibers consisting of long chain synthetic polymers, composed of a minimum 95 percent by weight of polyolefins or polyesters, and formed into a stable network so the filaments or yarns retain their dimensional stability relative to each other, including selvages. Geotextiles used on Administration projects shall conform to the following: GRAB STRENGTH lb PUNCTURE STRENGTH lb PERMITTIVITY sec-1 APPARENT OPENING SIZE, MAX mm TRAPEZOID TEAR STRENGTH *** lb MARYLAND APPLICATION CLASS TYPE OF GEOTEXTILE D4632 D6241 D4491 D4751 D4533 NONWOVEN 160 310 0.50 0.43 55TYPE I WOVEN, MONOFILAMENT 250 495 0.50 0.43 90 NONWOVEN 160 310 0.20 0.25 55SD TYPE II WOVEN, MONOFILAMENT 250 495 0.20 0.25 90 NONWOVEN 200 430 0.70 0.43 80TYPE I WOVEN, MONOFILAMENT 250 620 0.70 0.43 90 NONWOVEN 200 310 0.20 0.25 55TYPE II WOVEN, MONOFILAMENT 250 495 0.20 0.25 90 NONWOVEN 200 220 0.10 0.22 40 PE TYPE III WOVEN, MONOFILAMENT 250 370 0.10 0.22 70 NONWOVEN 160 310 0.20 0.30 80SE WOVEN 250 495 0.20 0.30 90 ST WOVEN 300* 600 0.05 0.15** 110 F WOVEN 200 450 0.05 0.60 75 NONWOVEN 200 450 1.1 0.21 80 E WOVEN, MONOFILAMENT 370 900 0.28 0.21 100 Note 1: All property values in the above table are based on minimum average roll values in the weakest principal direction except for apparent opening size. Note 2: The ultraviolet stability shall be 50 percent after 500 hrs of exposure for all classes, except Class F, which shall be 70 percent (D4355). 919 — GEOTEXTILES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS *15 percent elongation for silt fence and monofilament woven geotextile in Machine Direction **This is a MINIMUM apparent opening size, not a maximum. ***Machine Direction Contact the Office of Materials Technology’s Soils and Aggregate Technology Division for approval of geotextiles used for reinforcement applications.
919.02 Seam and Overlap
D4884. Geotextiles joined by sewing shall conform to the following:
a.Either “J” or “Butterfly” type seams joined with a lock stitch.
b.Tensile strength requirements when tested across the seam.
c.Thread used for seaming shall be of equal or greater durability than the geotextile itself.
919.03 Securing Pins Or Staples
Minimum 10 in. length and designed to securely hold the geotextile in place during construction.
Sections that cite this one
- 211Geosynthethic Stabilized Subgrade Using Graded Aggregate Base
- 212Subgrade Drainage Blanket
- 306Underdrains, Subgrade Drains, and Spring Control
- 308Erosion and Sediment Control
- 316Stormwater Management (SWM) Filtration Facilities
- 204Embankment and Subgrade
- 311Riprap Ditches
- 312Riprap Slope and Channel Protection
Geotextiles in other states
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Source: Standard Specifications for Construction and Materials, 2026 Edition. Pages 1037–1038 of 1,138. View official source ↗