06 13 33.pdf

ROCKAWAY REINFORCED DUNE AND CROSSOVER

Amendment 007

SECTION 06 13 33

TIMBERWORK

11/16

PART 1 GENERAL

1.1 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.

AMERICAN WOOD PROTECTION ASSOCIATION (AWPA)

AWPA M4 (2015) Standard for the Care of Preservative-Treated Wood Products

AWPA P34 (2014) Standard for Copper Naphthenate, Waterbone (CuN-W)

ASTM INTERNATIONAL (ASTM)

ASTM D5643/D5643M (2012) Standard Specification for Coal Tar Roof Cement, Asbestos Free

1.2 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. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Timberwork ; G, DO

Submit drawings of treated timber showing dimensions of cut, framed, or bored timbers.

SD-06 Test Reports

Preservative Treatment - Pier Timberworks; G, RO

The Contractor must provide the Contracting Officer's Representative (COR) with the inspection report of an independent inspection agency, approved by the Contracting Officer, that offered products comply with applicable AWPA standards.

Delivery Inspection List ; G, RO

SD-07 Certificates

SDS and CIS ; G, RO

SECTION 06 13 33 Page 1

Pesticide Applicator Company Self-Certification; G, RO

Best Management Practices (BMPs) ; G, RO

1.3 DELIVERY, STORAGE, AND HANDLING

Handle and store timber in accordance with AWPA M4. Follow precautions identified in SDS and CIS provided by the supplier of treated wood products.

Open-stack untreated timber and lumber material on skids at least 12 inches above ground, in a manner that will prevent warping and allow shedding of water. Close-stack treated timber and lumber material in a manner that will prevent long timbers or preframed material from sagging or becoming crooked. Keep ground under and within 5 feet of such piles free of weeds, rubbish, and combustible materials. Protect materials from weather.

Handle treated timber with ropes or chain slings without dropping, breaking outer fibers, bruising, or penetrating surface with tools. Do not use cant dogs, peaveys, hooks, or pike poles. Protect timber and hardware from damage.

1.4 QUALITY ASSURANCE

1.4.1 Preservative Treatment - Timberwork

The Contractor must be responsible for the quality of treated wood products. The Contractor must provide the Contracting Officer's Representative (COR) with the inspection report of an independent inspection agency, approved by the Contracting Officer, certifying that the offered products comply with applicable AWPA standards. Identify treatment on each piece by the quality mark of an agency accredited by the Board of Review of the American Lumber Standard Committee. Inspect all preservative-treated wood visually to ensure there are no excessive residual materials or preservative deposits. Material must be clean and dry or it will be rejected because of environmental concerns.

1.4.2 SDS and CIS

Provide Safety Data Sheets (SDS) and Consumer Information Sheets (CIS) associated with timber pile preservative treatment. Contractor must comply with all safety precautions indicated on SDS and CIS.

1.4.3 Delivery Inspection List

Field inspect and submit a verification list of each treated timber member and each strapped bundle of treated lumber indicating the wording and lettering of the quality control markings, the species and the condition of the wood. Do not incorporate materials damaged in transport from plant to site. Inspect all preservative-treated wood, visually to ensure there are no excessive residual materials or preservative deposits. Material must be clean and dry or it will be rejected due to environmental concerns.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Lumber and Timbers

Provide solid sawn lumber and timbers Southern Pine, Grade 1 or equal

SECTION 06 13 33 Page 2 identified by the grade mark of a recognized association or independent inspection agency using the specific grading requirements of an association recognized as covering the species used. The association or independent inspection agency must be certified by the Board of Review, American Lumber Standards Committee, to grade the species used. For secondary members use lumber or timbers rated No. 1 or better. Use commercial grade lumber for decking members.

2.1.2 Preservative Treatment

All lumber for the crossover decking, railings, and tread for stairs will be treated using MCA (Micronized Copper Azole) and preservative treatment in accordance with industry standards AWPA U1. All other lumber including timber piles will be treated using AWPA U1, category UC5A (Northern Waters) with ACZA (Ammoniacal Copper Zinc Arsenate). The Contractor must be responsible for the quality of treated wood products.

All lumber for the crossover decking, railings, and tread for stairs will be treated using MCA (Micronized Copper Azole) and preservative treatment in accordance with industry standards AWPA U1. All other lumber will be treated using AWPA U1, category UC5A (Northern Waters)with ACZA (Ammoniacal Copper Zinc Arsenate).

In the event that ACZA cannot be sourced, Chromated Copper Arsenate (CCA) pressure treated wood with a retention of 1.5 pcf may be used under the condition that it must be clean and free of CCA surface deposits. Wood with CCA surface deposits must be washed for at least 5 minutes under running water prior to use. The washing must occur greater than 100 feet landward of any regulated wetland and/or water body. Any wood debris such as sawdust or wash waster must not enter any water body, including wetlands or protected buffer areas. The Contractor must be responsible for the quality of treated wood products.

2.1.3 Hardware

Pile hardware must consisting of bolts with necessary nuts and washers, timber connectors, drift pins, dowels, nails, screws, spikes, and other fastenings. Bolts and nuts must conform to ASTM A325 or SAE Gr. 5 per contract drawings. Provide cast-iron ogee, malleable iron washers, or plate or cut washers where indicated. Provide bolts with washers under nut and head. Provide timber connectors and other metal fastenings of type and size indicated. Hot-dip galvanize all hardware specified or indicated in accordance with ASTM A123/A123M or ASTM A153/A153M, as applicable.

PART 3 EXECUTION

3.1 INSTALLATION

Cut, bevel, and face timbers prior to plant preservative treatment. In addition to the contract clause entitled "Accident Prevention" provide protective equipment for personnel fabricating, field treating, or handling materials treated with creosote or water-borne salts. Refer to paragraph SDS AND CIS.

3.1.1 Framing

Cut and frame lumber and timber so that joints will fit over contact surface. Secure timbers and piles in alignment. Open joints are

SECTION 06 13 33 Page 3 unacceptable. Shimming is not allowed. Drill holes for drift pins and dowels with a bit 1/16 inch less in diameter than the pin or dowel. Drill holes for truss rods or bolts with a bit 1/16 inch larger in diameter than rod or bolt. Drill holes for lag screws in two parts. Make lead hole for shank the same diameter as shank. Make lead hole for the threaded portion approximately two-thirds of the shank diameter. Drill holes in small timbers for boat or wire spikes with a bit of the same diameter or smallest dimension of the spike to prevent splitting. Counterbore for countersinking wherever smooth faces are indicated or specified.

3.1.2 Caps

Prior to placing caps, treat tops of posts or piles with copper naphthenate per AWPA M4. Place timber caps to secure bearing over tops of supporting posts or piles and to secure even alignment of their ends.

Secure caps by drift bolts of at least 1 inch into posts or piles. Place drift bolts in the center of pile or post unless otherwise noted on the drawings.

3.1.3 Stringers

Place crown up and, if possible, the better edge of deck stringers down.

Tops of stringers must not vary from a plane more than will permit bearing of the floor on stringers. Butt-joint and splice outside stringers, but lap interior stringers to take bearing over full width of cap or floor beam at each end. Break joints if stringers cover two spans. Toenail or drift bolt stringers as indicated. Stringers may be of sufficient length to cover two spans, except on sharp horizontal curves. Between stringers, frame and toenail solid-bridging at each end with at least four nails .

Make size and spacing of bridging as indicated.

3.1.4 Decking

Make decking of a single thickness of plank supported by stringers .

Unless otherwise indicated, lay plank with heart side down and with tight joints. Screw each plank to each joist or nailing strip with at least two fasteners. Provide fasteners at least 4 inches greater than the thickness of plank. Provide #12 x 2.5" Stainless steel deck plan screws. Place fasteners at least 2-1/2 inches from edges of the plank. Cut ends of planks parallel to center line of crossovers. Grade planks as to thickness and lay so that adjacent planks vary less than 1/16 inch .

3.1.5 Recycled Plastic Lumber Decking - Option

Reinforced Plastic Lumber (RPL) decking is on option for the elevated crossover 2x6 decking members. The installer shall have a minimum of three

(3) years' experience or three (3) installations within the last five (5) years of similar RPL decking projects.

RPL decking shall be rated to the minimum load requirements and extruded according to the shapes and dimensions noted on the drawings. Composite lumber containing wood or sawdust shall be rejected. The texture of the RPL surface shall provide slip resistance as recommended by U.S. Americans with Disabilities Act Accessibility Guidelines (ADAAG), as defined as a minimum static coefficient of friction 0.5. The manufacturer must submit testing performed under ASTM test method D2047 "Standard test method for Static Coefficient of Friction of Polish Coated Flooring Surfaces as Measured by the James Machine" using a rubber, dry condition test shoe.

Alternate test methods for slip resistance are not acceptable. RPL must

SECTION 06 13 33 Page 4 meet the specified dimensions within a 1/16" tolerance for width and height. Color of RPL decking shall match the existing RPL decking along the existing boardwalk.

The Bulk Density and Specific Gravity of the recycled plastic lumber shall conform to the acceptable standards determined by the standard test method in ASTM D6111. Recycled Plastic Lumber shall not absorb moisture, corrode, rot, warp, splinter, or crack. Cross sections shall not show wide deep gaps or holes. Plastic lumber shall remain unpainted. The plastic lumber shall be delivered to the site with trimmed square and smooth ends and to uniform lengths. Tolerance to manufactured lengths is two (2) inches over and zero inches under measured at a temperature of 700F. The lumber shall have a maximum of a 1/4" cup in 10", measured across the face. The maximum crook permitted will be 2" in 24'. All material shall be bundled and fully supported during shipping and storage to prevent creep, and per manufacturer's recommendation. All material must be straight and true when place in the construction.

All structures using recycled plastic material shall be designed with a minimum factor of safety of 2.0 against failure with a maximum strain of 2% over a 30 year life of structure. Maximum long term deflection of loaded structures shall not exceed 1/240 of the span under dead load conditions, at a 30 year modulus of elasticity accepted by the COR. All hardware shall be of the sizes shown on the plans and shall be 316 stainless steel unless otherwise indicated.

Upon delivery RPL material shall be unstacked, and laid out to acclimate to current temperature per manufacturer's recommendation for not less than 48 hours. Temperature to be verified with a non-contact thermometer in the field, hourly prior to installation in accordance with the dimensions as indicated on the drawings with gaps as shown in the approved manufacturer's gap chart. Contractor shall have two (2) non-contact thermometers on site, one of which shall be available to the COR.

The RPL decking shall be laid in the directions shown on the plans with spacing between abutting joints shall conform to the manufacturer's gap chart and tool holding at the extreme at 1/4". Each run of plank shall consist of planks that are no longer than ten (10) feet long. Fasteners shall not protrude from top of decking. Make tight connections between members. Install fasteners without splitting RPL. Each plank shall be attached to each stringer per manufacturer's installation recommendations. Place fasteners not less than 3/4" from the ends of the plank, and no less than 3/4" from the sides of the plank. Use shims to ensure RPL decking has a consistent smooth pitch. Shims, where necessary, shall be RPL. Grade planks as to thickness and lay so that adjacent planks vary no more than one-sixteenth (1/16") inch in elevation. Tolerance for the flatness of the finished decking shall be within one-quarter (1/4") inch per ten feet.

Butt Joints of decking planks shall be installed with consideration for expansion and contraction. Gap to be installed is dependent upon temperature at time of installation. Size of joint shall be calculated using the temperature at time of installation and the linear coefficient of thermal expansion. Consult manufacturer for the Linear Coefficient of Thermal Expansion as determined using ASTM D6341. Buckling of planks will not be accepted.

Representative shall be on site for a minimum of two (2) days a week during the delivery and installation of RPL material to insure that the

SECTION 06 13 33 Page 5 product is installed per manufacturer's recommendations, gap chart and tool. The inspections shall occur at delivery, at 25%, 50%, 75%, 100% of installation.

Contractor shall submit shop drawings showing complete details of construction, decking layout and screw locations. The Contractor shall furnish three (3) copies of prints or approved shop drawings, together with three (3) copies of a completed list of all materials to be furnished, indicating the type, method, and color of finish intended.

The Contractor shall submit two (2) one (1') foot long samples showing color and texture of recycled plastic for approval.

The Contractor shall submit a written warranty signed by the authorized representative of the manufacturer for the RPL material being used for the project.

The Contractor shall submit samples of stainless steel hardware to be used for installation of decking with manufacturer's data sheet.

Certified copies of required tests for materials supplied as specified in this item and as required by the Engineer shall be submitted and approved prior to ordering any material. Contractor shall also submit verification that RPL meets minimum composition requirements.

Technical specifications of the RPL product shall be submitted to the COR for review/approval prior to installation.

3.1.6 Fastening

Vertical bolts must have nuts on the lower end. Where bolts are used to fasten timber to timber, timber to concrete, or timber to steel, bolt members together when they are installed and retighten immediately prior to final acceptance of contract. Provide bolts having sufficient additional threading to provide at least 3/8 inch per foot thickness of timber for future retightening.

3.2 FIELD TREATMENT

3.2.1 Timberwork

Field treat all cuts, holes, bevels, notches, refacing, abrasions, and injuries such as abrasions or holes from removal of spikes or nails made in the field in treated piles or timbers in accordance with AWPA M4, SDS and CIS. Trim cuts and abrasions before field treatment. Depressions or openings around bolt holes, joints, or gaps including recesses formed by counterboring must be field treated with copper naphthenate conforming to AWPA P34; and after bolt or screw is in place, fill with coal-tar roofing cement conforming to ASTM D5643/D5643M .

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