GEOTEXTILES
PART 1 GENERAL
1.1SECTION INCLUDES
A.Geotextiles
1.2RELATED SECTIONS Not Used
1.3REFERENCES
A.AASHTO M 288: Geotextile Specification for Highway Applications
1.4DEFINITIONS Not Used
1.5SUBMITTALS
A.Manufacturer’s product data sheet and recommended installation
instructions.
1.6PACKAGING, 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
2.1EROSION CONTROL GEOTEXTILE
A.Conforming to AASHTO M 288.
Geotextiles
2.2DRAINAGE GEOTEXTILE
A.Class 2 nonwoven drainage geotextile according to AASHTO M 288.
2.3SEPARATION 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 woven slit film geotextiles in or under the pavement
structure.
2.4STABILIZATION GEOTEXTILE
A.Class I fabric according to AASHTO M 288 with Apparent Opening Size of
0.43 mm maximum average roll value.
2.5WEED BARRIER GEOTEXTILE
A.Woven, needle-punched, polypropylene, 5.0 oz, weed barrier geotextile
designed for commercial use.
2.6THREAD FOR SEWN SEAMS
A.Refer to AASHTO M 288, Appendix, Seaming.
PART 3 EXECUTION
3.1GENERAL EROSION CONTROL, DRAINAGE, SEPARATION AND
STABILIZATION
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 ft beyond the
perimeter of the tear or damage.
Geotextiles
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 turn vehicle wheels on the first layer.
3.2INSTALL 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.
3.3INSTALL 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 overlapping above subsequent sheets
to hold geotextile in place.
Geotextiles
3.4INSTALL SEPARATION GEOTEXTILE
A.Overlap the geotextile at least 1 ft at all longitudinal and transverse 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 pins 18 inches long to help secure the geotextile during installation.
3.5INSTALL STABILIZATION GEOTEXTILE
A.Overlap the geotextile at least 2 ft at all longitudinal and transverse 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 pins 18 inches long to help secure the geotextile during installation.
3.6INSTALL 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 thickness 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.
Geotextiles
D.Maintenance
1.Maintain surfaces and supply additional landscape materials where
necessary including areas affected by erosion.
3.7SEW
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.
END OF SECTION
Geotextiles
Geotextiles in other states
Utah revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 247–251 of 1,331.
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