Part 1 — General
1.1 Section Includes
A.Geotextiles
1.2 RELATED SECTIONS Not Used
1.3 References
A.AASHTO M 288: Geotextile Specification for Highway Applications
1.4 DEFINITIONS Not Used
1.5 Submittals
A.Manufacturer’s product data sheet and recommended installation instructions.
1.6 Packaging, Shipping, and Storing
A.Protect the geotextile from direct sunlight, chemicals, mud, dirt , and debris during shipment and storage.
B.Labeling and Tagging
1.Identify each package by a tag or label securely affixed to the outside of the roll on at least one end.
2.Provide the following required information on the tag:
a.Name of the geotextile manufacturer
b.Brand name of the product, width, length, and package weight of geotextile
Part 2 — Products
2.1 Erosion Control Geotextile
A.Conforming to AASHTO M 288.
2.2 Drainage Geotextile
A.Class 2 nonwoven drainage geotextile according to AASHTO M 288 .
2.3 Separation Geotextile
A.Class I fabric according to AASHTO M 288 with Apparent Opening Size of
0.60 mm maximum average roll value.
1.Do not use w oven slit film geotextiles in or under the pavement structure .
2.4 Stabilization Geotextile
A.Class I fabric according to AASHTO M 288 with Apparent Opening Size of
0.43 mm maximum average roll value.
2.5 Weed Barrier Geotextile
A.Woven , needle- punched, polypropylene , 5.0 oz, weed barrier geotextile designed for commercial use.
2.6 Thread for Sewn Seams
A.Refer to AASHTO M 288, Appendix, Seaming.
Part 3 — Execution
3.1 General Erosion Control, Drainage, Seperation and
STABALIZATION
A.Place geotextile on areas that are smooth and free of projections or depressions.
1.Do not drag the geotextile across the subgrade.
2.Roll geotextile out as smoothly as possible in the direction of vehicle travel.
B.Do not operate construction equipment or traffic directly on geotextile.
C.Repair immediately if damaged
1.Place patch over damaged area and extend 3 f t beyond the perimeter of the tear or damage.
D.Place cover material as soon as possible.
1.Do not leave uncovered for more than five days
2.Do not tear, puncture or shift geotextile during placement.
3.Use at least a 6 inch thick cover layer or twice the maximum aggregate size, whichever is thicker .
4.Do not dump cover material directly on the geotextile except as a starter course.
E.Limit construction vehicles in size and mass so rutting in the initial layer above the geotextile is not more than 3 inch deep or half the layer thickness, whichever is less.
1.Do not t urn vehicle wheels on the first layer.
3.2 Install Erosion Control Geotextile
A.Overlap the geotextile at least 2 ft at all longitudinal and transverse joints or sew the geotextile unless otherwise specified.
B.Place overlapped geotextile so that the upstream sheet overlaps the downstream sheets.
C.Overlap each sheet over the next downhill sheet for placement on slopes .
D.Anchor the geotextile using key trenches or aprons at the crests and toes of the slope.
3.3 Install Drainage Geotextile
A.Place and secure geotextile to provide direct contact against the excavated surface.
B.Overlap successive sheets of geotextile at least 1 ft in the down- gradient direction of flow.
C.Overlap geotextile at least 1 ft at the top of the trench, where applicable.
D.Place fill beginning with the sheets overlap ping above subsequent sheets to hold geotextile in place.
3.4 Install Separation Geotextile
A.Overlap the geotextile at least 1 ft at all longitudinal and trans verse joints or sew the geotextile unless otherwise specified.
B.Place fill to hold geotextile in place beginning with the sheets overlapping above subsequent sheets.
C.Use p ins 18 inches long to h elp secur e the geotextile during installation.
3.5 Install Stabilization Geotextile
A.Overlap the geotextile at least 2 ft at all longitudinal and trans verse joints or sew the geotextile unless otherwise specified.
B.Overlap each sheet over the next downhill sheet for placement on slopes .
C.Place fill to hold geotextile in place beginning with the sheets overlapping above subsequent sheets.
D.Use p ins 18 inches long to help secur e the geotextile during installation.
3.6 Install Weed Barrier Geotextile
A.Preparation
1.Remove sharp objects, large stones , and undesirable vegetation.
2.Cut an “X” over each plant and push geotextile under plant base if placing geotextile over an existing bed.
3.Roll geotextile over soil and cut an “X” for each plant hole if placing over a new bed.
4.Fold excess geotextile under and cover with specified landscaping materials.
B.Surface Cover
1.Provide at least 4 inch of cover on all areas on the geotextile.
2.Increase thick ness of cover material over geotextile to three times the diameter of the largest rock material if using large landscape rock.
3.Do not leave any portion of geotextile exposed to direct sunlight.
C.Repair
1.Repair immediately if damaged.
2.Place patch over damaged area and extend 3 ft beyond the perimeter of the tear or damage.
D.Maintenance
1.Maintain surfaces and supply additional landscape materials where necessary including areas affect ed by erosion.
3.7 Sew
A.Stitch seam such that no subgrade can be seen through the seam and the edge of the geotextile will not distort or be damaged under the force of cover material placement.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 247–251 of 1,331.