Specs Section 35 42 35_Tangier Island Jetty_Amended.pdf

TANGIER ISLAND JETTY CONSTRUCTION TANGIER

100% Submittal

PROJECT TABLE OF CONTENTS

DI VI SI ON 01 - GENERAL REQUI REMENTS

01 00 55 SOIL BORING DATA

01 11 00 SUMMARY OF WORK

01 14 00 WORK RESTRICTIONS

01 22 00.00 10 MEASUREMENT AND PAYMENT

01 30 00 PROJECT MEETINGS

01 32 01.10 50 PROJECT PROGRESS SCHEDULE - SIMPLIFIED

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00 CONTRACTOR QUALITY CONTROL

01 45 00.10 10 QUALITY CONTROL SYSTEM (QCS)

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

01 57 20.00 10 ENVIRONMENTAL PROTECTION

01 78 00 CLOSEOUT SUBMITTALS

DI VI SI ON 31 - EARTHWORK

31 00 00 EARTHWORK

DI VI SI ON 35 - WATERWAY AND MARI NE CONSTRUCTI ON

35 31 19 STONE, CHANNEL, SHORELINE/COASTAL PROTECTION FOR

STRUCTURES

35 42 35 POLYMERIC MARINE MATTRESS

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PROJECT TABLE OF CONTENTS Page 1

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 42 35

POLYMERIC MARINE MATTRESS

11/17

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 DEFINITIONS

1.4.1 Polymeric Marine Mattress

1.4.2 Geogrid

1.4.3 Minimum Average Roll Values

1.4.4 True Tensile Modulus in Use

1.4.5 Junction Strength

1.4.6 Flexural Stiffness (Also Known as Flexural Rigidity)

1.4.7 Ultraviolet Stability

1.5 QUALITY ASSURANCE

1.6 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 MANUFACTURERS

2.2 MATERIALS

2.2.1 Structural Geogrid

2.2.2 Mechanical Connection Elements

2.2.3 UV Stabilized Braid

2.2.4 Extensions

2.2.5 Stone Fill Materials

PART 3 EXECUTION

3.1 EXAMINATION

3.2 FINAL FABRICATION AND FILLING

3.2.1 Mechanical Connections

3.2.2 Seaming

3.2.3 Filling

3.3 PREPARATION

3.3.1 Geotextile Underlayer

3.3.1.1 General

3.3.1.2 Geotextile Fiber

3.3.1.3 Seams

3.3.2 INSPECTIONS, VERIFICATIONS, AND TESTING

3.3.2.1 Manufacturing and Sampling

3.3.2.2 Placement

3.4 INSTALLATION

3.4.1 Position

3.4.2 Placement Procedures

3.4.3 Construction Tolerances

3.4.4 Splicing and Anchoring

3.5 REPAIR

SECTION 35 42 35 Page 1

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SECTION 35 42 35 Page 2

SECTION 35 42 35

POLYMERIC MARINE MATTRESS

11/17

PART 1 GENERAL

1.1 SUMMARY

This Section consists for furnishing a Polymeric Marine Mattress (PMM) system with structural geogrid, braid, mechanical connection elements and stone fill as specified herein and shown on the contract drawings. The geogrid material for the mattress shall include sufficient quantities to form lifting hoops for the units. The work consists of fabricating, filling and placing mattress units in accordance with this Section and in reasonably close conformity with the lines, grades and dimensions shown on the contract drawings or approved by the Contracting Officer. Some prefabrication of the units may be accomplished prior to delivery to the site.

1.2 REFERENCES

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

ASTM INTERNATIONAL (ASTM)

ASTM D4355 (2002) Deterioration of Geotextiles from Exposure to Light, Moisture and Heat in a Xenon-Arc Type Apparatus

ASTM D4632 (2008) Grab Breaking Load and Elongation of Geotextiles

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

ASTM D6241 (2014) Standard Test Method for the Static Puncture Strength of Geotextiles and Geotextile-Related Products Using a 50-mm Probe

ASTM D6637 (2011) Standard Test Method for Determining Tensile Properties of Geogrids by the Single or Multi-Rib Tensile Method

ASTM D7737/D7737M (2015) Standard Test Method for Individual Geogrid Junction Strength

ASTM D7748/D7748M (2014) Standard Test Method for Flexural Rigidity of Geogrids, Geotextiles and Related Products

SECTION 35 42 35 Page 3

1.3 SUBMITTALS

Government approval is required for submittals marked 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

Shop Drawings; G

The Contractor shall submit details of the typical sections and connections.

SD-04 Samples

The Contractor shall submit product samples for the following:

Geogrid; G Braid; G Mechanical Connection Elements; G

SD-07 Certificates

Geogrid; G

The Contractor shall submit geogrid product data sheet and certification from the manufacturer that the geogrid product supplied meets the requirements as indicated in paragraph 2.2 MATERIALS of this Section.

SD-08 Manufacturer's Instructions

Manufacturer's Instructions; G

The Contractor shall submit manufacturer's general recommendations and instructions for fabrication, filling, installation and repair.

SD-09 Manufacturer's Field Reports

Roll Values; G

1.4 DEFINITIONS

1.4.1 Polymeric Marine Mattress

A non-metallic compartmental structure filled densely and tightly with stone prior to installation. Filling is achieved while each unit is positioned on edge prior to installation. Units are comprised of structural geogrid, braid, and mechanical connection elements fabricated to allow placement and provide containment of aggregate fill.

1.4.2 Geogrid

An integrally formed grid structure manufactured of a stress resistance polypropylene (PP) material with molecular weight and

SECTION 35 42 35 Page 4 molecular characteristics which impart high resistance to:

a. Loss of load capacity or structural integrity when the geogrid is subjected to mechanical stress in installation.

b. Deformation when the geogrid is subjected to applied force in use.

c. Loss of load capacity or structural integrity when the geogrid is subjected to long-term environmental stress.

1.4.3 Minimum Average Roll Values

Value based on testing and determined in accordance with ASTM D4759.

1.4.4 True Tensile Modulus in Use

The ratio of tensile strength to corresponding strain (e.g., 1 percent).

The tensile strength is measured via ASTM D6637 as modified by AASHTO Standard Specification for Highway Bridges, 1997 Interim, using a single rib having the greater of 3 junctions or 8 inches and tested at a strain rate of 10 percent per minute based on this gauge length without deforming test materials under load before measuring such resistance or employing "secant" or "offset" tangent methods of measurement so as to overstate tensile properties. Values shown in paragraph 2.2.1 are MARV (minimum average roll values).

1.4.5 Junction Strength

Junction Strength - Breaking tensile strength of junctions when tested in accordance with ASTM D7737/D7737M . Values shown in paragraph 2.2.1 are MARV (minimum average roll values).

1.4.6 Flexural Stiffness (Also Known as Flexural Rigidity)

Resistance to bending force measured via ASTM D7748/D7748M using one meter (minimum) long specimens. Values shown in paragraph 2.2.1 are MARV (minimum average roll values).

1.4.7 Ultraviolet Stability

The ratio of tensile strength after exposure to the tensile strength prior to exposure with exposure per ASTM D4355 and tensile strengths measured via ASTM D6637 as specified in subparagraph "True Tensile Modulus in Use" of paragraph DEFINITIONS above.

1.5 QUALITY ASSURANCE

Prior to the installation of the units, the Contractor shall arrange a meeting at the site with the system supplier and, where applicable, the system installer. The Contracting Officer shall be notified at least 5 working days in advance of the time of the meeting.

1.6 DELIVERY, STORAGE, AND HANDLING

The Contractor shall prevent excessive mud, wet concrete, epoxy, or other deleterious materials from coming in contact with and affixing to mattress materials. Store at temperatures above -20 degrees F (-29 degrees C).

Rolled materials may be laid flat or stood on end.

SECTION 35 42 35 Page 5

PART 2 PRODUCTS

2.1 MANUFACTURERS

An approved source of geogrid is Tensar International Corp., or other approved equivalent.

2.2 MATERIALS

2.2.1 Structural Geogrid

a. Unless otherwise specified on the contract drawings, shop drawings, or directed by the Contracting Officer, the structural geogrid type shall be Type 1 for the Top, Bottom, Sides and Internal Diaphragms of the units.

b. The structural geogrid shall be produced from virgin resin and classified as polypropylene (PP) and shall possess complete continuity of all properties throughout its structure.

c. The structural geogrid shall accept applied force in use by positive mechanical interlock (i.e., direct mechanical keying) with:

(1) Compacted soil or construction fill materials;

(2) Contiguous sections of itself when overlapped and embedded in compacted soil or construction fill materials; and,

(3) Rigid mechanical connection elements such as bodkins, pins or hooks.

d. The structural geogrid shall have the following characteristics or similar:

PROPERTY UNITS TYPE 1

Junction Strength (MD/XMD) kN/m (lb/ft) 25.11/27.9 (1,665/1,911)

Flexural Stiffness mg-cm 2,000,000

Resistance to Installation Damage percent GP 85

Resistance to Long Term Degradation percent 100

Ultraviolet Stability (Retained Strength @ 500 hours) percent 98

Aperture Dimensions (nominal) inches (mm) 1.0/1.2 (25.0/30.5)

Rib Thickness (minimum) inches (mm) 0.07/0.07 (1.78/1.78)

SECTION 35 42 35 Page 6

2.2.2 Mechanical Connection Elements

The mechanical connection elements shall be as shown on the contract drawings and shop drawings and shall be composed of high density HDPE, unless otherwise approved by the Contracting Officer.

2.2.3 UV Stabilized Braid

a. The braid used for tying and lacing in the fabrication of the units shall be 8-strand hollow-core braid composed of high density polyethylene (HDPE). Each strand shall consist of a bundle of monofilament

HDPE.

b. The braid shall have a nominal diameter of not less than 3/16 inch and a breaking strength of not less than 400 pounds on a test specimen 36 inches in length.

c. The braid shall be UV stabilized with a minimum carbon black content of 2.0 percent by weight.

2.2.4 Extensions

a. Extensions shall be constructed of Structural Geogrid; see paragraph

2.2.1 Structural Geogrid of this Section.

b. Geogrid extensions shall be a two (2) foot structural geogrid extension and attached to the mattress as indicated in the contract drawings, shop drawings or as directed by the Contracting Officer.

2.2.5 Stone Fill Materials

a. The stone for filling shall be crushed stone. The stone shall be durable and of suitable quality to ensure suitable performance in the mattress and the climate at the work site. Stone shall be angular in shape. Stone shall be free from cracks, seams and other defects that would tend to increase its deterioration in the mattress. The inclusion of objectionable quantities of dirt, sand, clay and rock fines shall not be permitted.

b. Unless otherwise shown on the contract drawings, shop drawings or approved by the Contracting Officer the stone shall possess the following qualities:

(1) The stone fill shall possess a specific gravity of at least 2.5.

(2) The minimum diameter of stone used shall not be less than 2 inches, across the smallest dimension of the stone. The maximum diamter of stone used shall be 6 inches; however, the median stone size shall be 4 inches.

PART 3 EXECUTION

3.1 EXAMINATION

The Contractor shall check the geogrid, braid and mechanical connection elements upon delivery to verify that the proper material has been received. These materials shall be inspected by the Contractor to be free of flaws or damage occurring during manufacturing, shipping, or handling.

SECTION 35 42 35 Page 7

3.2 FINAL FABRICATION AND FILLING

3.2.1 Mechanical Connections

The joints where the ends and baffles of each unit join the top or bottom of the unit shall be made with a mechanical connection between geogrid elements as shown on the contract drawings and shop drawings.

3.2.2 Seaming

Unless otherwise shown on the contract drawings, shop drawings or approved by the Contracting Officer:

a. All cut ends of braid material shall be knotted within 1 inch to 2 inch of the end to prevent raveling of the braid material. The braid material shall be securely knotted to the geogrid at all ends of all stitched seams, and at a spacing not to exceed 6 feet along any stitched seam.

Pieces of braid material may be spliced end to end by securely knotting.

b. The stitches along each seam shall be sufficiently tight to close the gap between the adjacent pieces of geogrid. The braid material shall be stitched through each pair of apertures along each seam at least once. The spacing of stitches shall be reasonably uniform at approximately 6 (minimum) stitches per foot along the entire length of each seam.

c. Seaming to connect adjacent units is not required

3.2.3 Filling

Unless otherwise shown on the contract drawings and shop drawings or approved by the Contracting Officer:

a. Each unit shall be filled and the fill shall be packed while the unit is laid flat with the top flaps pointed upwards. Dump stone into each compartment. Spread the stone in each compartment allowing final stage spreading to be accomplished manually.

b. Packing of the stone fill material and complete filling of each compartment shall be adequate to achieve complete filling as evidenced by tightly confined stone particles, tensioned interior diaphragms, braid connections, slight bulging of each compartment, and no evidence of air space between compartments during lifting. Excessive bulging of the unit or displacement on the interior diaphragms, such as caused by overpacking or inadequate support, shall not be allowed.

c. Lifting hoops shall be formed by splicing together the flap of the main piece of marine grid over the top of the mattress while leaving sufficient length for the lifting hoop on each end of the mattress to form the top layer of marine grid.

d. Filling shall be accomplished in a manner that does not cause excessive damage to the geogrid, mechanical connection elements or the braid.

SECTION 35 42 35 Page 8

3.3 PREPARATION

3.3.1 Geotextile Underlayer

3.3.1.1 General

Provide geotextile that is a woven monofilament pervious sheet of plastic yarn as defined by ASTM D 123 matching or exceeding the minimum average roll values listed in TABLE 1. Strength values indicated in the table are for the weaker principal direction.

TABLE 1

MINIMUM PHYSICAL REQUIREMENTS FOR DRAINAGE GEOTEXTILE

PROPERTY UNITS ACCEPTABLE VALUES TEST METHOD

GRAB STRENGTH lb 202 ASTM D4632

SEAM

STRENGTH lb 141 ASTM D4632 PUNCTURE lb 79 ASTM D6241 TRAPEZOID TEAR lb 79 ASTM D4533

APPARENT OPENING

SIZE U.S. SIEVE 40 ASTM D4751

3.3.1.2 Geotextile Fiber

Fibers used in the manufacturing of the geotextile shall consist of a long-chain synthetic polymer composed of at least 85 percent by weight of polyolefins, polyesters, or polamides. Add stabilizers and/or inhibitors to the base polymer, if necessary to make the filaments resistant to deterioration caused by ultraviolet light and heat exposure. Reclaimed or recycled fibers or polymer shall not be added to the formulation.

Geotextile shall be formed into a network such that the filaments or yarns retain dimensional stability relative to each other, including the edges.

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

3.3.1.3 Seams

Sew the seams of the geotextile with thread of a material meeting the chemical requirements given above for geotextile yarn or bond the seams by cementing or by heat. Attach the sheets of geotextile at the factory or another approved location, if necessary, to form the required width section. Test seams in accordance with method ASTM D 4632 . The strength of the seam shall be not less than 90 percent of the required grab tensile strength of the unaged geotextile in any principal direction.

3.3.2 INSPECTIONS, VERIFICATIONS, AND TESTING

3.3.2.1 Manufacturing and Sampling

Geotextiles and factory seams shall meet the requirements specified in TABLE 1. Perform conformance testing in accordance with the manufacturers

SECTION 35 42 35 Page 9 approved quality control manual.

3.3.2.2 Placement

The Contractoring Office may approve placing the geotexile simultaneously with the mattress units by pre-attaching the geotextile material to the bottom of each mattress unit with provision for sufficient overlap of the geotextile.

3.4 INSTALLATION

3.4.1 Position

The units shall be placed at the proper elevation, alignment and orientation as shown on the contract drawings or as directed by the Contracting Officer. Units shall be placed with the long dimension perpendicular to the shoreline on the prepared subgrade.

3.4.2 Placement Procedures

a. The procedure used in placement of the units shall be in accordance with the Manufacturer's Instructions of the system supplier and as approved by the Contracting Officer.

b. For lifting of each unit, a spreader beam and/or spreader bars shall be used in a manner that the unit is not subjected to severe bending or distortion and that the top and bottom layers of geogrid are tensioned uniformly across their width. Units should generally be lifted from a horizontal position.

c. Personnel shall stay clear of the area beneath units and rigging during lifting. Tag lines and/or divers may be required to facilitate proper placement of the units.

3.4.3 Construction Tolerances

The finished surface of the marine mattress shall not deviate from the lines and grades shown by one (1") inch +/-. Tolerances are measured perpendicular to the indicated neatline. The intention is that the work shall be built generally to the required elevations, slope and grade.

Placed material not meeting these limits shall be removed or reworked as directed by the Contracting Officer.

3.4.4 Splicing and Anchoring

Where applicable, splicing and/or anchoring of the units shall be accomplished as shown on the contract drawings, shop drawings, or as directed by the Contracting Officer.

3.5 REPAIR

Any units damaged during installation shall be repaired in a manner approved by the Contracting Officer or shall be replaced by the Contractor. Any such measures required shall be at no additional cost to the Government.

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SECTION 35 42 35 Page 10

SECTION 35 42 35 Page 11

3.5 REPAIR