B.08.03_Amendment_2_Updated_31_05_19.pdf

C-44 Reservoir/STA Project, C-44 Intake Canal - Bank Stabilization (ICBS), Martin County, Florida

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 05 19

GEOTEXTILE

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 WARRANTY

PART 2 PRODUCTS

2.1 MATERIALS AND MANUFACTURE

2.1.1 Non-Woven Geotextile

2.1.2 Thread

2.2 DELIVERY, STORAGE AND HANDLING

2.3 MANUFACTURER QUALITY CONTROL SAMPLING AND TESTING

PART 3 EXECUTION

3.1 QUALITY ASSURANCE SAMPLES AND TESTS

3.1.1 Quality Assurance Samples

3.1.2 Quality Assurance Tests

3.2 PREPARATION

3.3 INSTALLATION

3.3.1 Overlaps

3.3.2 Seam Construction

3.3.3 Geotextile Repair

3.4 COVERING

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SECTION 31 05 19 Page 1 W912EP19R0013 Amendment 0002

SECTION 31 05 19

GEOTEXTILE

PART 1 GENERAL

1.1 SUMMARY

Non-woven geotextile as filter material under riprap.

Woven geotextile material .

Related Sections:

Section 01 33 00 SUBMITTAL PROCEDURES

Section 31 00 00 EARTHWORK

Section 35 31 19 RIPRAP SYSTEM

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D4354 (2012) Sampling of Geosynthetics for Testing

ASTM D4355/D4355M (2014) Deterioration of Geotextiles from Exposure to Light, Moisture and Heat in a Xenon-Arc Type Apparatus

ASTM D4491/D4491M (2015) Standard Test Methods for Water Permeability of Geotextiles by Permittivity

ASTM D4533 (2011) Trapezoid Tearing Strength of Geotextiles

ASTM D4632/D4632M (2015a) Grab Breaking Load and Elongation of Geotextiles

ASTM D4751 (2016) Standard Test Method for Determining Apparent Opening Size of a Geotextile

ASTM D4759 (2011; R 2018) Standard Practice for Determining the Specification Conformance of Geosynthetics

ASTM D4833/D4833M (2007; E 2013; R 2013) Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products

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ASTM D4873/D4873M (2017) Standard Guide for Identification, Storage, and Handling of Geosynthetic Rolls and Samples

ASTM D5261 (2010) Measuring Mass Per Unit Area of Geotextiles

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Layout ; G, DO

Geotextile layout plan with proposed size, number, position and sequencing of geotextile rolls and direction of all field seams.

Anchor ; G, DO

Proposed details of anchoring geotextile.

Seams; G, DO

Contractor shall submit details of the proposed sewing method for field seams of each type of geotextile (type of stitch, number of stitches per inch, number of stitching rows, distance from the edge of the geotextile to the stitches, and weight and type of thread) and a minimum 3 feet long sample of the sewn seam for each type of geotextile for approval by the Contracting Officer.

SD-03 Product Data

Manufacturer Quality Control Sampling and Testing ; G, RO

A minimum of 7 days prior to scheduled use, manufacturer's quality control manual.

Thread ; G, DO

The Contractor shall submit manufacturer's documentation that the materials meet the requirements herein.

Installation Plan ; G, DO

The Contractor shall submit the proposed installation plan, which may include the manufacturer's recommended installation procedure.

SD-06 Test Reports

Quality Assurance Tests ; G, RO

Test results for resins, roll material and factory seam tests at

SECTION 31 05 19 Page 3 frequency specified in respective quality control manuals. Results shall include or bracket the rolls delivered for use in the work.

SD-07 Certificates

Geotextile ; G, DO

A minimum of 30 days prior to scheduled use, submit the manufacturer's documentation that raw materials and roll materials comply with required geotextile physical properties. For needle punched geotextile, the Manufacturer shall certify that the geotextile has been continuously inspected using permanent on-line full-width metal detectors and does not contain any needles which could damage other geosynthetic layers.

1.4 WARRANTY

The Manufacturer shall warrant the EQUIPMENT, MATERIALS and PRODUCTS specified in this section against defective materials and workmanship with the Manufacturer's standard warranty, but for no less than two years from the date of Substantial Completion, and as described in Section 00 07 00 - General Terms and Conditions. If the Manufacturer's standard warranty is less than the stipulated period, the Manufacturer shall provide a special Manufacturer's extended warranty for the stipulated period, or a Maintenance Bond in the form attached herein, to extend the Manufacturer's warranty period for the stipulated period.

The Contractor shall warrant the work against defects for one year from the date of Substantial Completion and as described in Section 00 07 00 - General Terms and Conditions.

PART 2 PRODUCTS

2.1 MATERIALS AND MANUFACTURE

2.1.1 Non-Woven Geotextile

Non-woven pervious sheet of polymeric material.

Geotextile fibers:

Long-chain synthetic polymer composed of at least 95 percent by weight polypropylene, polyesters, or polyamides.

Filaments resistant to deterioration by ultraviolet light, oxidation, and heat exposure.

Do not use reclaimed or recycled fibers or polymer to the formulation.

Form geotextile into a network such that the filaments or yarns retain dimensional stability relative to each other, including the selvages.

Finish the edges of the geotextiles to prevent the outer fiber from pulling away from the geotextile.

Use of woven silt film geotextiles shall not be allowed.

Acceptable physical property values are listed below in Table 1. Values shown are for the weaker principal direction, with the exception of apparent opening size (AOS), which is the maximum average roll value.

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Acceptance of geotextile shall be in accordance with ASTM D4759.

Type 1 Non-Woven Geotextile Properties:

PROPERTY TEST METHOD AVERAGE ROLL REQUIREMENTS

Mass per Unit Area, OZ/SY ASTM D5261 12 nominal

Apparent Opening Size, U.S.

Sieve

ASTM D4751 100

Permittivity, SEC-1 ASTM D4491/D4491M >0.8

Puncture Strength, LBS ASTM D4833/D4833M >800

Grab Tensile Strength, LBS ASTM D4632/D4632M >300

Trapezoidal Tear, LBS ASTM D4533 >115

Ultraviolet Degradation % Retained at 500 HRS

ASTM D4355/D4355M >70

Sewn Seam Strength, LBS ASTM D4632/D4632M >270

2.1.2 Thread

High-strength polyester, nylon, or other approved thread type.

Equivalent chemical compatibility and ultraviolet light stability as the geotextile.

Contrasting color with the geotextile.

2.2 DELIVERY, STORAGE AND HANDLING

Label, handle, and store geotextiles in accordance with ASTM D4873/D4873M and as specified herein.

Wrap each roll in an opaque and waterproof layer of plastic during shipment and storage. Do not remove the plastic wrapping until deployment.

Label each roll with the manufacturer's name, geotextile type, lot number, roll number, and roll dimensions (length, width, gross weight).

Repair or replace geotextile or plastic wrapping damaged as a result of storage or handling.

Do not expose geotextile to temperatures in excess of 160 Deg F or less than 32 Deg F unless recommended by the manufacturer.

Do not use hooks, tongs or other sharp instruments for handling geotextile. Do not lift rolls by use of cables or chains in contact with the geotextile. Do not drag geotextile along the ground.

2.3 MANUFACTURER QUALITY CONTROL SAMPLING AND TESTING

The Manufacturer is responsible for establishing and maintaining a quality control program to assure compliance with the requirements of the specification. Documentation describing the quality control program shall

SECTION 31 05 19 Page 5 be made available upon request. Perform manufacturing quality control sampling and testing in accordance with the manufacturer's approved quality control manual. As a minimum, geotextiles shall be randomly sampled for testing in accordance with ASTM D4354, Procedure A.

Acceptance of geotextile shall be in accordance with ASTM D4759. Tests not meeting the specified requirements will result in the rejection of applicable rolls.

PART 3 EXECUTION

3.1 QUALITY ASSURANCE SAMPLES AND TESTS

3.1.1 Quality Assurance Samples

Provide assistance to the Contracting Officer in the collection of quality assurance samples. Collect samples upon delivery to the site for quality assurance testing at a frequency of one per 100,000 square feet. Identify samples with a waterproof marker by manufacturer's name, product identification, lot number, roll number, and machine direction. The date and a unique sample number shall also be noted on the sample. Discard the outer layer of the geotextile roll prior to sampling a roll. Samples shall then be collected by cutting the full-width of the geotextile sheet a minimum of 3 feet long in the machine direction. Rolls which are sampled shall be immediately resealed in their protective covering.

3.1.2 Quality Assurance Tests

The Contractor shall provide quality assurance samples to a USACE validated laboratory. Samples will be tested to verify that geotextile meets the requirements specified. Test method ASTM D4355/D4355M shall not be performed on the collected samples. Geotextile product acceptance shall be based on ASTM D4759. Tests not meeting the specified requirements will result in the rejection of applicable rolls.

3.2 PREPARATION

Construct the surface underlying the geotextile as required in Section

35 31 19 RIPRAP SYSTEM.

3.3 INSTALLATION

Notify the Contracting Officer a minimum of 48 hours prior to installation of geotextile. Install geotextile in accordance with manufacturer's written recommendations and the approved installation plan and the layout plan. Contractor may need to use divers to ensure the surface preparation is performed as required. If divers are required, the Contractor shall submit a Dive Operations Plan as required in EM 385-1-1, and as part of the Accident Prevention Plan (APP). The Activity Hazard Analysis (AHA) shall also include diving operations. Both APP and AHA are required in Section 01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS.

No equipment will be permitted to traffic in direct contact with the geotextile.

Lay geotextile smooth so as to be free of tensile stresses, folds, and wrinkles.

Use adequate ballast (e.g. sand bags) to prevent uplift by wind.

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Do not use staples or pins to hold the geotextile in place.

Do not leave geotextile uncovered for more than 7 days.

Anchor geotextile and backfill anchor trenches. The Contractor can secure submerged edges of geotextile through staking or weighting in lieu of use of a key trench. Methods used must be consistent with the work plan.

Protect geotextile from clogging, tears and other damage during installation. Damaged geotextile shall be repaird per the manufacturer's requirments at not additional cost to the Government.

3.3.1 Overlaps

Continuously overlap panels a minimum of 24 inches at all longitudinal and transverse joints.

Install geotextile vertically from the top of slopes to the bottom with the upstream geotextile panel overlapping the downstream panel by at least 24 inches (minimum). On horizontal seams the upper panel will overlap the lower panel by at least 24 inches. All geotextile placed in the wet shall have a minimum overlap of 36 inches. If approved, sewn seams may be used instead of overlapped seams.

3.3.2 Seam Construction

Sew seams continuously using an SSa flat seam with one row of a two-thread 401 chain stitch unless otherwise recommended by the manufacturer.

Minimum distance from the geotextile edge to the stitch line nearest to that edge: 2 IN unless otherwise recommended by the manufacturer.

Tie off thread at the end of each seam to prevent unraveling.

Construct seams on the top side of the geotextile to allow inspection.

Sew skipped stitches or discontinuities with an extra line of stitching with 18 IN of overlap.

For seams that are field sewn, the seams shall be sewn using the same equipment and procedures as will be used for the production seams.

For field and factory seams which are sewn, provide ad least a 2-meter sample of sewn seam before the geotextile is installed. If seams are sewn in both the machine and cross section machine direction, provide samples of seams from both directions. Provide Quality Assurance seam samples to the Government at the request of the Contracting Officer.

Seam strength shall meet the minimum requirements specified in Table 1 above.

3.3.3 Geotextile Repair

Place a patch of the same type of geotextile which extends a minimum of 24 inches beyond the edge of the damage or defect.

Fasten patches continuously using a sewn seam or other approved method.

Align machine direction of the patch with the machine direction of the

SECTION 31 05 19 Page 7 geotextile being repaired.

Replace geotextile which cannot be repaired.

3.4 COVERING

Do not cover the geotextile prior to inspection and approval by the Contracting Officer. The Contractor's QC shall inspect, approve and document approved areas prior to covering subgrade with geotextile.

Documentation shall be provided with the QC daily report. Place bedding, riprap, or cover soil in a manner that prevents soil from entering the geotextile overlap zone, prevents tensile stress from being mobilized in the geotextile, and prevents wrinkles from folding over onto themselves.

On side slopes, soil backfill shall be placed from the bottom of the slope upward. Cover materials shall not be dropped onto the geotextile from a height greater than 3 feet. No equipment shall be operated directly on top of the geotextile without approval of the Contracting Officer. Use equipment with ground pressures less than 7 psi to place the first lift over the geotextile. A minimum of 10 inches of soil shall be maintained between full scale construction equipment and the geotextile. Cover soil material type, compaction, and testing requirements shall be as specified for embankment fill in Section 31 00 00 EARTHWORK. Equipment placing cover soil shall not stop abruptly, make sharp turns, spin their wheels, or travel at speeds exceeding 5 miles per hour. Geotextile damaged due to cover placement, spreading equipment, or spreading or compaction procedures, shall be replaced a the expense of the Contractor.

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