31 05 19.13 - Geotextiles For Earthwork.pdf
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- Attached to
- Skytop Lodge Sewage Treatment Plant Improvements Project – Contract : 2026-01- Project Number 005153. 0436
- Solicitation number
- Not on record
- Issued by
- Monroe County, Pennsylvania
About this file
Summary
This is a technical specification document for geotextiles for earthwork prepared by Herbert, Rowland & Grubic, Inc. for the Skytop Lodge Sewage Treatment Plant Improvements Project (Project Number 005153.0436) in Canadensis, Pennsylvania. The specification section 31 05 19.13 details the requirements for woven geotextile material to be used in subsurface drainage applications as part of the overall sewage treatment plant upgrades. The primary product specified is a non-biodegradable, UV-resistant, woven polypropylene geotextile fabric (TenCate Geosynthetics Mirafi FW402 or equivalent substitution), with precise performance criteria including mass per unit area of 5.6 oz./sq. yd., 24-mil thickness, tensile strength of 2,400 by 1,680 lbf/ft., and 90 percent strength retention at 5,000 hours UV exposure. Installation requirements include laying the material smoothly on prepared subgrade with minimum 18-inch unseamed overlaps, 12-inch seamed overlaps, securement pins spaced according to slope gradient (24 inches to 5 feet on center), and continuous sewn or thermal seams on steeper slopes. A pre-bid conference for the project is scheduled for August 25, 2026, at 10:30 AM at Skytop Lodge STP in Canadensis, Pennsylvania, with bids due on September 18, 2026, at 10:00 AM through PennBid, requiring bid security of not less than 10% in the form of a certified check or bid bond.
The specification requires submission of detailed product data, shop drawings, manufacturer certificates of compliance, installation instructions, and source quality-control test results demonstrating conformance to AASHTO M288 and applicable ASTM test standards. Manufacturers must have a minimum of three years' documented experience in geotextile production. Materials must be delivered in original manufacturer packaging and stored in clean, dry conditions protected from moisture and dust according to ASTM D4873 guidelines. Accessories including polypropylene polyester or Kevlar sewing thread, steel securing pins (3/16 inch diameter, minimum 12 inches long), and steel wire staples (10 gage minimum, 6 inches minimum length) must meet specified durability requirements. Field quality control and inspection procedures are required throughout installation, with protection measures including ballast to prevent wind uplift and restriction on equipment operation directly over the geotextile. The material must not be left uncovered for more than seven days after installation to prevent UV degradation.
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Text version
31 05 19.13 - GEOTEXTILES FOR EARTHWORK
Herbert, Rowland & Grubic, Inc. 31 05 19.13 - 1 005153.0436
SECTION 31 05 19.13 - GEOTEXTILES FOR EARTHWORK
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Woven geotextile material.
B. Related Requirements:
1. Section 31 05 13 - Soils for Earthwork: Fill and grading materials.
2. Section 31 23 16.13 - Trenching: Soil and subsoil materials for fill and grading purposes.
3. Section 31 25 00 - Erosion and Sedimentation Controls: Erosion and sedimentation control devices.
4. Section 32 11 23 - Aggregate Base Courses: Subbase and base course for placement under paving.
1.2 REFERENCE STANDARDS
A. American Association of State Highway and Transportation Officials:
1. AASHTO M288 - Standard Specification for Geotextile Specification for Highway
Applications.
B. ASTM International:
1. ASTM D3786/D3786M - Standard Test Method for Bursting Strength of Textile
Fabrics—Diaphragm Bursting Strength Tester Method
2. ASTM D4355/D4355M - Standard Test Method for Deterioration of Geotextiles by Exposure to Light, Moisture and Heat in a Xenon Arc Type Apparatus.
3. ASTM D4491/D4491M - Standard Test Methods for Water Permeability of
Geotextiles by Permittivity.
4. ASTM D4533/D4533M - Standard Test Method for Trapezoid Tearing Strength of
Geotextiles.
5. ASTM D4632/D4632M - Standard Test Method for Grab Breaking Load and
Elongation of Geotextiles.
6. ASTM D4751 - Standard Test Method for Determining Apparent Opening Size of a Geotextile.
7. ASTM D4833/D4833M - Standard Test Method for Index Puncture Resistance of
Geomembranes and Related Products.
8. ASTM D4873 - Standard Guide for Identification, Storage, and Handling of
Geosynthetic Rolls and Samples.
9. ASTM D4884/D4844M - Standard Test Method for Strength of Sewn or Bonded
Seams of Geotextiles.
10. ASTM D4886 - Standard Test Method for Abrasion Resistance of Geotextiles (Sand
Paper/Sliding Block Method).
11. ASTM D6524 - Standard Test Method for Measuring the Resiliency of Turf
Reinforcement Mats (TRMs).
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12. ASTM D6525/D6525M - Standard Test Method for Measuring Nominal Thickness of Rolled Erosion Control Products.
13. ASTM D6566 - Standard Test Method for Measuring Mass per Unit Area of Turf Reinforcement Mats.
14. ASTM D6567 - Standard Test Method for Measuring the Light Penetration of a Turf Reinforcement Mat (TRM).
15. ASTM D6575 - Standard Test Method for Determining Stiffness of Geosynthetics Used as Turf Reinforcement Mats (TRMs).
16. ASTM D6818 - Standard Test Method for Ultimate Tensile Properties of Rolled Erosion Control Products.
1.3 SUBMITTALS
A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.
B. Product Data: Submit manufacturer information including tensile strength, elongation, thickness, UV resistance, and other material specifications.
C. Shop Drawings: Indicate fabric layout, seam locations, and overlap details in installation drawings.
D. Manufacturer's Certificate: Certify that products meet or exceed specified requirements.
E. Manufacturer Instructions: Submit detailed instructions on installation requirements, including storage and handling procedures.
F. Source Quality-Control Submittals: Indicate results of factory tests and inspections.
1.4 CLOSEOUT SUBMITTALS
A. Section 01 77 00 - Closeout Procedures: Requirements for submittals.
B. Project Record Documents: Record actual locations of geotextile material, including placement depth.
1.5 QUALIFICATIONS
A. Manufacturer: Company specializing in manufacturing products specified in this Section with minimum three years' documented experience.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Section 01 61 00 - Product Requirements: Requirements for transporting, handling, storing, and protecting products.
B. Inspection: Accept materials on Site in manufacturer's original packaging and inspect for damage.
C. Comply with ASTM D4873.
Herbert, Rowland & Grubic, Inc. 31 05 19.13 - 3 005153.0436
D. Store materials according to manufacturer instructions.
E. Protection:
1. Protect materials from moisture and dust by storing in clean, dry location remote from construction operations areas.
2. Provide additional protection according to manufacturer instructions.
PART 2 - PRODUCTS
2.1 SUBSURFACE DRAINAGE GEOTEXTILE
A. Manufacturers:
1. TenCate Geosynthetics – Mirafi FW402.
2. Substitutions: As specified in Section 01 61 00 - Product Requirements.
B. Description:
1. Non-biodegradable, UV-resistant, woven geotextile fabric.
2. Material: Polypropylene.
3. Calendar such that yarns will retain relative positions.
C. Performance and Design Criteria:
1. Comply with AASHTO M288.
2. Mass per Unit Area:
a. 5.6 oz./sq. yd.
b. Comply with ASTM D6566.
3. Thickness:
a. 24 mils.
b. Comply with ASTM D6525.
4. Tensile Strength (Grab):
a. 2,400 by 1,680 lbf/ft.
b. Comply with ASTM D4595.
5. Maximum Elongation:
a. 24 percent.
b. Comply with ASTM D4632.
6. Burst Strength:
a. 189 psi.
b. Comply with ASTM D3786.
7. CBR Puncture:
a. 675 lb.
b. Comply with ASTM D6241.
8. UV Resistance at 5000 Hours:
a. Strength Retention: 90 percent.
b. Comply with ASTM D4355.
9. Apparent Opening Size:
a. 40 US Std Seive.
b. Comply with ASTM D4751.
10. Permittivity:
a. 2.1 sec-1
Herbert, Rowland & Grubic, Inc. 31 05 19.13 - 4 005153.0436
b. Comply with ASTM D4491
11. Flow Rate:
a. 145 gal/min/sq. ft.
b. Comply with ASTM D4491.
2.2 ACCESSORIES
A. Sewing Thread:
1. Material: Polypropylene Polyester or Kevlar.
2. Durability: Equal to or greater than durability of geotextile.
B. Securing Pins:
1. Material: Steel rods or bars.
2. Diameter: 3/16 inch.
3. Minimum Length: 12 inches.
4. Washers:
a. Material: Steel.
b. Outside Diameter: Minimum 1-1/2 inches.
c. Inside Diameter: 1/4 inch.
d. Thickness: 1/8 inch.
C. Wire Staples:
1. Material: Steel.
2. Minimum Size: 10 gage.
3. Minimum Length: 6 inches.
2.3 SOURCE QUALITY CONTROL
A. Section 01 40 00 - Quality Requirements: Requirements for testing, inspection, and analysis.
B. Certificate of Compliance:
1. If manufacturer is approved by authorities having jurisdiction, submit certificate of compliance indicating Work performed at manufacturer's facility conforms to Contract Documents.
2. Specified shop tests are not required for Work performed by approved manufacturer.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Section 01 73 00 - Execution Requirements: Requirements for installation examination.
B. Verify that underlying surface is smooth and free of ruts or protrusions that could damage geotextile material.
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3.2 PREPARATION
A. Section 01 73 00 - Execution Requirements: Requirements for installation preparation.
B. Subgrade Material and Compaction Requirements: As specified in Section 31 23 16.13 – Trenching.
3.3 INSTALLATION
A. Geotextile Material:
1. Lay and maintain smooth and free of tensile stresses, folds, wrinkles, or creases.
2. Ensure that material is in direct contact with subgrade.
3. Orientate with long dimension of each sheet parallel to direction of slope.
4. Minimum Unseamed Joints Overlap: 18 inches.
B. Securement Pins:
1. Insert through geotextile midway between edges of overlaps and minimum 6 inches from free edges.
2. Minimum Spacing:
a. Slopes Steeper than 3 Horizontal on 1 Vertical: 24 inches o.c.
b. Slopes 3 Horizontal on 1 Vertical to 4 Horizontal on 1 Vertical: 3 feet o.c.
c. Slopes Flatter than 4 Horizontal on 1 Vertical: 5 feet o.c.
3. Ensure that washer bears against geotextile.
C. Seams:
1. Minimum Seamed Joints Overlap: 12 inches at longitudinal and transverse joints.
2. Seams across Slope: Lap upper panel over lower panel.
3. Sewn Seams:
a. Continuously sew seams on slopes steeper than 1 vertical on 2 horizontal.
b. Stitch Type: As recommended by geotextile manufacturer.
c. Tie off thread at the end of each seam to prevent unraveling.
4. Thermal Seams:
a. As recommended by geotextile manufacturer.
b. Comply with ASTM D4886.
D. Penetrations: As recommended by geotextile manufacturer.
E. Repairing Damaged Geotextiles:
1. Repair torn or damaged geotextile by placing patch of same type of geotextile over damaged area minimum of 12 inches beyond edge of damaged area, and fasten as recommended by geotextile manufacturer.
2. Remove and replace geotextile rolls which cannot be repaired.
F. Fill and Cover:
1. Place fill to prevent tensile stress or wrinkles in geotextile.
2. Place fill from bottom of side-slopes upward.
3. Do not drop fill from height greater than 3 feet.
Herbert, Rowland & Grubic, Inc. 31 05 19.13 - 6 005153.0436
3.4 FIELD QUALITY CONTROL
A. Section 01 40 00 - Quality Requirements: Requirements for inspecting and testing.
3.5 PROTECTION
A. Section 01 73 00 - Execution Requirements: Requirements for protecting finished Work.
B. Ballast: Adequate to prevent uplift of material by wind.
C. UV Exposure: Do not leave material uncovered for more than seven days after installation.
D. Do not use staples or pins to hold geotextiles in place where located adjacent to other geosynthetic layers that could be damaged.
E. Do not operate equipment directly on top of geotextile.
END OF SECTION
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