3-1204T018R0005-ProjectSpecifications.pdf

Table of Contents

Table of Contents Preface 101 - Terms, Format, and Definitions 102 - Bid, Award, and Execution of Contract 103 - Scope of Work 104 - Control of Work 105 - Control of Material 106 - Acceptance of Work 107 - Legal Relations and Responsibility to the Public 108 - Prosecution and Progress 109 - Measurement and Payment 153 - Contractor Quality Control 155 - Schedules for Construction Contracts 156 - Public Traffic 157 - Soil Erosion Control 171 - Weed and Disease Prevention 208 - Structure Excavation and Backfill for Selected Major Structures 308 – Minor Crushed Aggregate 404 - Minor Hot Asphalt Concrete 412 - Asphalt Tack Coat 568 – Multi-Layer Polymer Concrete Overlay 571 – Concrete Patch Repair 635 - Temporary Traffic Control 712 - Joint Material 717 - Structural Metal 718 - Traffic Signing and Marking Material

Preface

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Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-03 for construction of National Forest System Roads.

101 - Terms, Format, and Definitions

101.01 Meaning of Terms

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association Mine Safety and Health Administration National Institute of Standards and Technology National Electrical Safety Code West Coast Lumber Inspection Bureau

Add the following to (b) SI symbols:

mp Milepost ppm Part Per Million

101.04 Definitions

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

Contractor--The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “purchaser”.

Culvert--No definition.

Right-of-Way--A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Add the following:

Adjustment in Contract Price--“Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change--“Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Design Quantity--“Design quantity” is a Forest Service method of measurement from the FS-96 Forest Service Specifications for the Construction of Roads and Bridges.

Under these FP specifications this term is replaced by the term “Contract Quantities”.

Forest Service--The United States of America, acting through the Forest Service, U.S.

Department of Agriculture.

Neat Line--A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road--Temporary construction access built along the route of the project.

Purchaser--The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse--A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order--An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Schedule of Items--A schedule in the contract that contains a listing and description of construction items, quantities, units of measure, unit price, and amount.

Utilization Standards--The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

102 - Bid, Award, and Execution of Contract

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102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work

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Delete all of this section and replace with the following:

103.01 Intent of Contract.

This project is for the rehabilitation of an existing concrete vehicular bridge at milepost

1.0 of Forest Service Road 1376, as it crosses the Chetco River. The project is located on the Gold Beach Ranger District, Rogue River-Siskiyou National Forest, approximately 9 miles northeast of Brookings in Section 12, T40S, R13W, Curry County, Oregon.

The Contractor will be allowed to close Forest Service Road 1376 for two, 3 day durations, otherwise the road will remain open to traffic during construction activities with temporary delays as noted in supplemental specification Section 156 – Public Traffic.

The project includes all labor, materials, equipment, supplies, supervision and incidentals necessary for the rehabilitation of the Chetco River Bridge. Work includes but is not limited to the following:

Soil erosion and pollution control, Temporary traffic control, Clearing and grubbing, Sliver fill construction along guardrail shoulders as required, Removal of existing approach guardrails, Removal of existing bridge rails (existing rail posts to remain), Installation of new approach guardrail and bridge rails, Concrete patch repairs (patching of voids in superstructure concrete, repair of concrete bridge bearing, and pier column), Installation of steel jacket at bridge pier and concrete fill as noted in Plans, Preparation of bridge deck for multi-layer polymer concrete overlay, Construction of concrete overlay on existing bridge deck, Construction of rock gabion retaining wall at bridge end, Placement of tapered asphalt surfacing at bridge ends, and All other items necessary to complete the work in accordance with the plans and specifications.

104 - Control of Work

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Deletions

Delete Sections 104.01, 104.02, and 104.04.

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Add the following subsection:

104.06 Use of Roads by Contractor

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - Control of Material

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105.02 Material Sources.

105.02(a) Government provided sources.

Add the following:

Comply with the requirements of 30 CFR 56, subparts B and H. Use all suitable material for aggregate regardless of size unless otherwise designated. When required, re-establish vegetation in disturbed areas according to section 625.

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105.05 Use of Material Found in the Work.

Delete 105.05 (a) and (b) and the last sentence of the second paragraph and substitute the following:

Materials produced or processed from Government lands in excess of the quantities required for performance of this contract are the property of the Government. The Government is not obligated to make reimbursement for the cost of producing these materials.

106 - Acceptance of Work

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106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility to the Public

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107.05 Responsibility for Damage Claims.

Delete the entire subsection.

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107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

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107.09 Legal Relationship of the Parties.

Delete the entire subsection.

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107.10 Environmental Protection.

Add the following:

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Before beginning any work, submit a Hazardous Spill Plan. List actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, and similar information. Immediately notify the CO of all hazardous material spills. Provide a written narrative report form no later than 24 hours after the initial report and include the following:

Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

Exact time and location of spill including a description of the area involved.

Containment procedures.

Summary of any communications the Contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

108 - Prosecution and Progress

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108 Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment

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109 Deletions

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

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109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

Add the following definition:

(p) Thousand Board Feet (Mbf). 1,000 board feet based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job. For glued laminated timber, 1,000 board feet based on actual width, thickness, and length of each piece actually incorporated in the job.

153 - Contractor Quality Control

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153.02 Contractor Quality Control Plan.

Add the following:

Submit written proposals for approval of alternate AASHTO or State approved test methods. Alternate methods may be allowed based on documented equivalence to the specified method.

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153.04 Records.

Delete all but the first sentence

155 - Schedules for Construction Contracts

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155 Delete.

Delete Section 155 in its entirety.

156 - Public Traffic

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Delete Section 156 in its entirety and replace with the following:

Description

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project.

Material

156.02 Conform to the MUTCD and the following Sections and Subsections:

Construction sign panels 633 Retro-reflective sheeting 718.01 Temporary concrete barrier 618 Temporary plastic fence 710.11 Temporary traffic control devices 718.22

156.03 General. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic. The Contractor is allowed to have two, 8 hour closure periods on weekends (Saturday & Sunday) as noted in Table 156-1 otherwise traffic delays may not exceed 30 minutes at any one time followed by an open period of no less than 10 minutes.

Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until a traffic control plan has been approved. Post construction signs and traffic control devices in conformance with MUTCD. All required signs will be in place and approved prior to beginning work on project.

If the Contractor agrees in writing to allow public traffic to use a new road being constructed prior to completion, it will be considered an existing road for traffic control purposes.

156.04 Temporary Traffic Control. Install and maintain temporary traffic control devices adjacent to and within the project as required by the approved traffic control plan and the MUTCD. Install and maintain traffic control devices as follows:

(a) Furnish and install traffic control devices before the start of construction operations.

(b) All detours outside of clearing limits will be approved in writing by the Contracting Officer as part of the traffic control plan.

(c) Install only those traffic control devices needed for each stage or phase.

(d) Relocate temporary traffic control devices as necessary.

(e) Remove devices that no longer apply to the existing conditions.

(f) Immediately replace any device that is lost, stolen, destroyed, or inoperative.

(g) Keep temporary traffic control devices clean.

(h) Remove all temporary traffic control devices upon contract completion or when approved.

(i) When required, use flaggers certified by the American Traffic Safety Services

Association, the National Safety Council, the International Municipal Signal Association, a state agency, or other acceptable organization. Perform the work described under MUTCD Part 6. Use type III, VII, VIII, or IX retro-reflective sheeting on flagger paddles. Do not use flags. Flaggers must wear high visibility safety apparel as required by MUTCD 6E.02.

156.05 Temporary Closures. Road segments may be closed as shown in Table 156-1.

The maximum consecutive hours of closure shall be followed by a minimum number of consecutive hours open to traffic as shown. Maintain traffic control devices during closure period(s). Appropriate barricades and signs will be erected and maintained as shown in the traffic control plan or as otherwise designated.

Prior to closing roads during construction, give written notice to the Contracting Officer at least 21 days in advance.

Table 156-1 Temporary Road Closures

Road

Number From

Terminus To

Terminus Maximum

Consecutive hours of Closure

Minimum Consecutive hours Open

1376 MP 1.0 MP 1.1 8 (Saturday 12 8 (Sunday)

156.06 Acceptance. Public traffic work will be evaluated under Subsection 106.02.

Measurement

156.09 Do not measure Public Traffic for payment.

Payment

156.10 Include all costs associated with the Section 156 - Public Traffic in the contract unit price as shown in the bid schedule.

157 - Soil Erosion Control

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157.03 General

Delete the entire subsection and replace with the following:

Prior to the start of construction, submit a written plan that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction. Do not begin work until the necessary controls for that particular phase of work have been implemented. Do not modify the type, size, or location of any control. An alternate erosion control plan with all necessary permits may be submitted 30 days before intended use.

Incorporate all permanent erosion control features into the project at the earliest practicable time, as outlined in the approved plan.

When erosion control measures are not functioning as intended, immediately take corrective action.

171 - Weed and Disease Prevention

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171.01 This work consists of washing and treating construction equipment to remove seeds, plants, and plant fragments from the equipment before the equipment is used on National Forest System lands.

Material

171.02 Conform to the following Subsection:

Water 725.01

Construction Requirements

171.03 General . Notify the CO in writing at least 24 hours before moving any construction equipment onto National Forest System lands. Construction equipment does not include cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas outside of National Forest System lands.

Perform all work at a location designated on the plans or other locations approved in writing. Provide the CO with an opportunity to monitor the washing and inspection.

171.04 Equipment. Use a high pressure washing system.

For work on National Forest System lands, use a washing system that traps all wash water and either stores it for removal from National Forest System lands or recycles the water for continued use. If the equipment recycles the water, provide adequate filters for seed removal. Dispose of the filter material and removed seeds in an approved manner.

Do not mix soaps, detergents, or other chemicals with the wash water.

For work at a commercial washing facility, use an approved facility.

171.05 Washing. Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment.

171.06 Inspection. Inspect the washed construction equipment, including the undercarriage, to ensure that the washing removed the dirt, debris, and seeds from the construction equipment. Rewash the construction equipment as necessary or as directed.

171.07 Acceptance. Weed prevention will be evaluated under Subsection 106.02.

171.08 Do not measure weed prevention for payment.

171.09 Include all costs associated with the Section 171-Weed Prevention in the unit price for Section 151-Mobilization.

208 - Structure Excavation and Backfill for Selected Major Structures

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Construction Requirements

208.04 General.

Add the following to the end of the second sentence of the third paragraph:

"... to the CO a minimum of 5 days prior to beginning excavation work."

Add the following to the end of the third sentence of the third paragraph:

"...to the CO a minimum of 15 days prior to installation."

Delete the seventh paragraph and replace with the following:

Dispose of unsuitable or excess material on-site as directed by the Contracting Officer

(CO).

208.13 Measurement.

Add the following to the second paragraph:

(f) Material excavated to construct end walls or wing walls which lie outside the excavation limits specified above.

Add the following paragraph:

Foundation over-excavation and the resulting replacement material will not be measured for payment unless the CO determines the over-excavation was unavoidable because of the nature of the material.

308 – Minor Crushed Aggregate

Delete this section and substitute the following:

Section 308. — MINOR CRUSHED AGGREGATE

308.01 This work consists of furnishing, placing, and compaction of crushed aggregate for roadway aggregate courses.

Material

308.02 Crushed Aggregate. Furnish hard, durable particles or fragments of crushed stone or gravel conforming to the size and quality requirements for crushed aggregate material normally used locally in the construction and maintenance of highways by local Federal or State agencies. Furnish crushed aggregate with a maximum size between ¾ and 1 1/2 inches as determined by AASHTO T 27 and T 11. Furnish crushed aggregate uniformly graded from coarse to fine and free of organic matter, lumps or balls of clay, and other deleterious matter including noxious weed seed.

308.03 Preparing Surface. Prepare the surface on which the aggregate course is placed by blading and rolling to provide for uniform surface aggregate depth across prescribed area as directed by the CO.

308.04 Placing Crushed Aggregate. Mix the aggregate and adjust the moisture content to obtain a uniform mixture with a moisture content suitable for compaction. Spread and shape the mixture on the prepared surface in a uniform layer.

Do not place the mixture in a layer exceeding 6 inches in compacted thickness. When more than one layer is necessary, compact each layer according to Subsection 308.05 before placing the next layer.

308.05 Compacting and Finishing Crushed Aggregate. Adjust the moisture content to a level suitable for compaction. Use compression-type rollers at speeds less than 6 feet per second and vibratory rollers at speeds less than 3 feet per second. Compact each layer of material full width with one of the following and until there is no visible evidence of further consolidation or Subsection 301.05.

(1) Four roller passes of a vibratory roller having a minimum dynamic force of

40,000 pounds impact per vibration and a minimum frequency of 1000 vibrations per minute.

(2) Eight roller passes of a 20-ton compression-type roller.

(3) Eight roller passes of a vibratory roller having a minimum dynamic force of 30,000 pounds impact per vibration and a minimum frequency of 1000 vibrations per minute.

(4) Eight roller passes of a vibratory roller having a minimum dynamic force of 9,000 pounds impact per vibration and a minimum frequency of 3,500 vibrations per minute.

Shape the surface to the required template and check the surface with a 10-foot straightedge. Defective areas are surface deviations in excess of 3/4 inch in 10 feet between any two contacts of the straightedge with the surface.

Correct all defective areas by loosening the material, adding or removing material, reshaping, and compacting.

308.06 Acceptance. Acceptance is based on visual inspection of the work for compliance with the contract and prevailing industry standards. Prior to placement of material furnish a production certification including gradation and quality properties for each source for approval. Prior to placement of material furnish a certification stating that the provided crushed aggregates are weed free for each source and product for approval. Material accepted by certification may be sampled and tested at any time by the government. If found not in conformance with the contract, the material will be rejected whether in place or not.

Measurement

308.07 Measure the Section 308 items listed in the bid schedule according to Subsection

109.02 and the following as applicable.

Measure crushed aggregate by the cubic yard in place.

Measure square yard width horizontally to include the top of aggregate width including designed widenings. Measure the square yard length horizontally along the centerline of the roadway.

Payment

308.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 308 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

404 - Minor Hot Asphalt Concrete

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404.02 Composition of Mix (Job-Mix Formula).

Delete the second paragraph and replace with the following:

Submit a job-mix formula and supporting documentation, test results, and calculations for the material to be incorporated into the work. Include copies of laboratory test results and mix design data that demonstrate that the properties of the aggregate, additives, and mixture meet the current requirements and criteria of Federal or state agencies. Ensure that the job-mix formula was performed no more than one year prior to placing the hot asphalt concrete. After reviewing the Contractor’s proposed job-mix formula, the CO will determine the final values for the job-mix formula to be used and notify the Contractor in writing.

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404.04 Weather Limitations.

Change 35o F to 45o F:

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404.06 Placing.

Add the following:

Do not place asphalt until the CO has approved in writing the area where it will be placed.

Delete the last sentence and replace with the following:

Offset the longitudinal joint of one layer at least 6 inches from the joint in the layer immediately below. Make the longitudinal joint in the top layer along the centerline of two-lane roadways or at the lane lines of roadways with more than two lanes. Offset transverse joints in succeeding layers and in adjacent lanes at least 10 feet, where possible.

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404.07 Compacting (a).

Delete and replace with the following:

(a) Roadway paving. Thoroughly and uniformly compact the surface a minimum of three passes with rollers that meet one of the following requirements:

(1) Steel-wheeled rollers, other than vibratory type, capable of exerting a force of not less than 1.5 ton/feet of width of the compression roll or rolls.

(2) Vibratory steel-wheel rollers with a minimum mass of 5 ton, equipped with amplitude and frequency controls, and designed to compact asphalt concrete.

(3) Pneumatic-tire rollers with smooth tread tires of equal size that provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 lbf/in2.

Perform initial compaction while the mixture is above 250 °F. Perform finish rolling with steel-wheel rollers and continue until no roller tracks remain.

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404.09 Acceptance.

Add the following to the second paragraph:

See Table 404-1 for sampling and testing requirements.

Table 404-1. Delete and replace with the following:

Table 404-1 Sampling and Testing Requirements.

Material or

Product

Type of Acceptance (Subsection)

Characteristic Category Sampling Methods

Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Asphalt Mixture (404.09)

- - - AASHTO T

As requested by the CO

Roadway prior to compaction yes As soon as sampled

Section 561

412 - Asphalt Tack Coat

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Measurement

412.07 Acceptance

Delete the first paragraph and replace with the following:

Emulsified asphalt will be evaluated under Subsections 106.02, 106.03, and 702.07.

568 – Multi-Layer Polymer Concrete Overlay

Section 568, which is not part of the FP-03 Standard Specifications, is included in this project by Supplemental Specification.

Description

568.00 Scope.

This work consists of preparing a bridge deck and sealing and resurfacing the deck with a multi-layer polymer concrete overlay (MPCO).

568.04 Submittals.

Submit the following at least two weeks before beginning the overlay work:

A manufacturer’s safety sheet for each MPCO component.

Manufacture dates and shelf-life expiration dates for each production lot of primer/sealer and polymer components.

Tabulated data indicating the estimated cure time, in minutes, for the allowable ambient temperature range in increment of 10ºF.

A detailed work plan for the MPCO preparation, application, and cleanup. Include estimated dates and timeframes.

A fourier transform infra-red spectrum analysis of each polymer component.

Aggregate (except moisture content) and polymer resin test results.

568.05 Pre-placement Conferences.

(a) Supervisory Personnel – Hold a pre-placement conference with all supervisory personnel, subcontractors, suppliers, MPCO manufacturer and other personnel who will be involved in the overlay work. Meet at a mutually agreed time approximately two weeks in advance of the work. Present and discuss all phases of the overlay work.

(b) Placement Crew – Hold a second pre-placement conference with the contracting officer’s representative and the entire overlay work crew at the job site one-half hour before overlay work begins to discuss placement duties and procedures. Do not begin the overlay work until this meeting is held.

Materials

568.10 General.

Furnish materials meeting the following requirements:

(a) Multi-Layer Polymer Concrete Overlay – Furnish an MPCO from the Oregon Department of Transportation’s Qualified Products List (QPL).

Sample the furnished aggregate according to AASHTO T 2 and test it by performing sieve analysis according to AASHTO T 27, and addition testing according to the following:

Sieve Size Percent Passing (by weight)

4 100

8 30 - 75

16 0 – 5

30 0 – 1

Property Test Method Requirements

Aggregate absorption AASHTO T 84 1% max.

Abrasion loss AASHTO T 327 9.5% max.

Moisture content* AASHTO T 255 0.20% max.

Mohs hardness - 6.0 min.

*At time of mixing the polymer resin.

Package all aggregate material so that it arrives at the project site clean, dry, and at the specified moisture content.

Sample and test the elongation of the polymer resin according to ASTM D 638.

(b) Portland Cement Concrete Repair Material – Furnish Portland cement concrete (PCC) repair material according to Section 571.

568.16 Bond Strength.

Before opening to traffic, perform two bond tests for each complete placement in the presence of and at locations designated by the contracting officer. Cut 3-inch diameter cores and conduct bond tests on the cores.

The bond tests consist of:

Coring through the MPCO approximately 1-inch into the existing concrete.

Attaching a device to the top of the core.

Exerting a tensile load to the core sufficient to cause failure or achieve 300 psi, whichever occurs first.

Perform bond tests when the deck surface temperature is less than 80 ºF.

A successful test is the failure of the concrete substrate or bond failure at or above 250 psi.

After coring and testing, restore the area voided by the cores by blowing with compressed air and filling with MPCO material.

Equipment

568.20 Equipment.

Provide equipment to place the MPCO that meets the requirements of the manufacturer.

Remove all equipment that leaks oil or other contaminants from the work area until they are repaired. Before placing the MPCO, cover the prepared deck with clear plastic, overlapping as required to prevent contaminants from contacting the deck. Do not use equipment until approval is obtained.

556.21 Surface preparation equipment:

(a) Sawing equipment – Furnish power-driven concrete saws adequate for sawing joints.

(b) Scarifying equipment – Furnish power-operated micro-milling and shot blasting scarifying equipment capable of uniformly removing the existing surface to depths required.

(1) Micro-milling – Furnish cold plane or rotomill grinding machines using carbide cutting tools in a rotary drum. Provide equipment with tooth spacing of not more than ¼ inch, capable of leaving smooth, uniform pattern of striations.

Limit machines to a gross operational weight of no more than 35 tons and a forward speed of 2.5 feet per minute. Operate at a drum speed of at least 120

RPM.

(2) Shot-blasting – Furnish mono-directional or bi-directional electric-powered shot blast machines with single or multiple blast wheels that cover a width of at least 2.5 feet per pass, and conform to EPA air pollution requirements by containing dust and steel abrasive media. If the equipment is not equipped for simultaneous bi-directional blasting, make separate passes in opposite directions to ensure equal cleaning on all sides of the exposed aggregate.

(c) Power-driven hand tools – Furnish power-driven hand tools for removal of unsound concrete meeting the following requirements:

Class 2 preparation equipment – For Class 2 deck preparation use chipping hammers equal to or less than a nominal 15 pound class.

Class 3 preparation equipment – For Class 3 deck preparation use chipping hammers equal to or less than a nominal 30 pound class.

(d) Hand tools – Furnish hammers and chisels to remove final particle of unsound concrete or to achieve the required depth.

(e) Air compressor – Furnish air compressors equipped with functioning oil traps.

Ensure air used for blow-down or prepared surfaces is free of oil.

568.24 Miscellaneous equipment:

(a) Tools – Furnish squeegees, rollers, and other approved tools to apply the primer/sealer and the polymer resin.

Furnish a power broadcaster to uniformly apply the MPCO aggregate.

Furnish pickup type power brooms capable of removing loose aggregate.

(b) Coring equipment– Furnish core cutting equipment that can produce a core at least 3-inches in diameter.

(c) Bonding test equipment– Furnish bond testing equipment that:

Is compatible with the core test.

Can exert a tensile load to the core sufficient to exceed 300 psi.

Is equipped with a measuring device capable of reading tensile force exerted with 1.0% accuracy.

Labor

568.30 Personnel qualifications.

Provide employees meeting the following requirements:

Workers that are certified, in writing, by the MPCO manufacturer that they are qualified to place the MPCO.

A MPCO manufacturer technical representative that is experienced in MPCO application and mix design.

The MPCO manufacturer technical representative duties include:

Be present at both pre-placement conferences.

Be at the project site and verify the deck is prepared to the manufacturer’s satisfaction.

Be at the project site during overlay placements and monitor the placement to ensure the manufacturer’s recommendations are met.

Construction

568.40 General.

Prepare the entire deck surface including the deck edge against the curb to receive the MPCO. Remove all grease, oil, paint, dirt, laitance, rust, and all other contaminants that would affect adhesion of the MPCO.

568.40 Surface preparation.

(a) General – Remove surface concrete by approved hand methods that cannot be reached by power-driven equipment.

Dispose of all material off of Forest Service Lands according to Section 203.

Perform a de-lamination deck survey using chain drag or other approved methods to determine limits of Class 2 preparation required.

(b) Bridge deck drains – Temporarily block all deck drains and catch basins while preparing the surface and placing MPCO. Do not allow scarifying, chipping, sawing, sandblasting, shot-blasting, sweeping, water-blasting, or flushing material to enter them.

(c) Expansion joints – Before constructing the MPCO, block out expansion joints with rigid polyethylene foam or other approved material, compatible with the primer/sealer and polymer resin.

Remove material that is within 12 inches of all joints with bush hammers, scabblers or by other means acceptable to the contracting officer. Do not damage the joints.

(d) Initial surface preparation – Perform surface preparation far enough in advance of resurfacing so that all further deck preparation can be satisfactorily completed. Prepare bridge decks according to the following:

(1) Class 1 Preparation – Before beginning Class 1 preparation, construct a 50-foot long by 5-foot wide test strip in an area approved by the contracting officer.

Roughen the existing concrete surface to an exposed aggregate surface texture depth profile of at least 1/16 inch determined according to ASTM E965 (standard volumetric test). Do not proceed with Class 1 preparation until the contracting officer approves the test strip results.

Continue to roughen the existing concrete surface to match the test strip.

Protect visible reinforcing steel.

(2) Class 2 Preparation – In Class 2 areas remove concrete with nominal 15 pound powered chipping hammer as follows:

Remove all unsound concrete from the lower limit of Class 1 preparation down to a maximum depth of half the total thickness of the existing deck.

Remove a minimum of ¾ inch of concrete around and below reinforcing steel that is not at least 50 percent embedded in the existing concrete surface.

Sandblast reinforcing steel coated or pitted with rust to a bright finish.

(3) Class 3 Preparation – When Class 3 preparation is required it will be designated by the contracting officer and performed according to Section

Perform Class preparation as follows:

Remove the full thickness of deck remaining below the lower limit of Class 2 preparation using jackhammers.

Sandblast reinforcing steel pitted with rust to remove all rust.

When concrete is removed to the limits of Class 2 and Class 3 preparations, repair the deck with a PCC repair material compatible with MPCO. Cure the PCC repair material according to the manufacturer’s recommendations before placing the MPCO. Before beginning production test the PCC repair material to MPCO bond according to 568.16.

(e) Final surface preparation – Roughen the surface leaving an exposed aggregate surface texture depth profile of at least 1/16 inch determined according to ASTM E965 (standard volumetric test). Take at least two tests for each placement or for every 250 square yards of surface whichever is greater.

(1) Micro-milling – When micro-milling is used, prepare final surfaces by:

Shot-blasting

Sweeping the area magnetically to remove metal residue.

Cleaning with an air compressor immediately before resurfacing.

(2) Shot-blasting – When shot-blasting is used, prepare final surfaces by:

Sweeping the area magnetically to remove metal residue.

Cleaning with an air compressor immediately before resurfacing.

568.42 Placing Multi-layer Polymer Concrete Overlay.

(a) Placement conditions – Place MPCO on prepared surfaces only when all the following conditions are met:

The air temperatures and the deck surface temperature are within the manufacturer’s recommended range.

The entire deck surface is dry by visual inspection.

Moisture is not present on the deck surface by visual inspection and moisture is not visible on a test sheet when tested according to ASTM D4263.

During the hours of darkness work area are illuminated. Submit an illumination plan for approval at the pre-placement conference.

(b) Thickness – Place MPCO in lifts to achieve a total minimum thickness of 3/8 inch.

(c) Mixing the Polymer Resin – Condition and mix the polymer resin as recommended by the manufacturer. Do not dilute, thin, or add foreign material to either the individual polymer resin components or the mixed polymer resin.

(d) Overlay Application – With the contracting officer’s approval of the surface preparation apply the MPCO according to the manufacturer’s recommendations.

After each lift, before gelling of the polymer resin occurs, broadcast a layer of aggregate at a rate of 2 pounds of aggregate per square yard or until no wet spots are visible.

Feather the MPCO to the expansion joint edges.

If application of the MPCO surface does not meet the manufacturer’s recommendations stop the operation until revised methods, changes in equipment, or correction of procedures are proposed and approved.

568.43 Delamination survey and repair – The completed MPCO surface will be inspected by the contracting officer for delamination, bond failure, and other damage by use of a chain drag, coring, and other devices. Areas of delamination of less than one square foot will not require repair. Core samples that do not achieve bond strength of at least 250 psi will be repaired at no additional cost to the Government. Core samples with bond strength of 250 psi or greater will be paid according to section 106.

Repair all surface defects by removing the defective material and reapplying the MPCO.

Do not damage adjacent materials or steel substrates. Repair to the satisfaction of the contracting officer at no additional cost to the Government.

Make all repairs before opening to traffic or, if the resurfaced area is opened to traffic at the Contractor’s request before completing repairs all additional traffic control to complete the repairs will be at no additional cost to the Government.

568.44 Use of new surface:

(a) Vehicles – Do not allow vehicles or construction equipment on the MPCO surface until curing is complete.

(b) Traffic – Do not open sections to traffic until approved by the contracting officer. Before opening to traffic, remove all loose aggregate by power brooming and open all drains.

568.80 Measurement.

The quantities of work performed under this Section will be measured according to the following:

Class 1 Preparation – Class 1 preparation will be measured on the area basis.

Class 2 Preparation – Class 2 preparation will be measured on the area basis.

Furnish MPCO Material and Constructing MPCO – Furnishing and constructing multi-layer polymer concrete overlay will each be measured on the area basis. The area will be determined by measuring the actual surface of the resurfaced bridge deck.

568.90 Payment.

The accepted quantities of work performed under this Section will be paid at the contract unit price, per unit of measurement for the following items:

Pay Item Unit of Measurement

(a) Class 1 Preparation………………………………………..….Square Yard

(b) Class 2 Preparation………………………………………..….Square Yard

(c) Furnish MPCO Material…………………………………..….Square Yard

(d) Construct MPCO Overlay………………..………………..….Square Yard

571 – Concrete Patch Repair

Section 571, which is not part of the FP-03 Standard Specifications, is included in this project by Supplemental Specification.

571.01 Scope.

This work consists of patching existing holes, surface spalls, or scaling in concrete superstructure girders, curbs, sidewalks and substructures as called out on the Plans or as directed by the contracting officer (CO).

571.02 Submittals.

Submit the following at least two weeks before beginning the patch repair work:

A detailed work plan for areas to be patched including patch repair preparation, application, and cleanup. Include estimated dates and timeframes.

A manufacturer’s product description (cut) sheet for each patching component.

Manufacture dates and shelf-life expiration dates for each patch repair component.

Tabulated data indicating the estimated cure time, in minutes, for the allowable ambient temperature range in increment of 10ºF.

Aggregate to be used (as required).

Materials

571.03. Conform to the following Subsection:

Epoxy resin adhesives 725.21 Grout 725.22

571.04 Concrete Repair.

(a) Patch material.

For repair areas less than 1 ½” inches (38 millimeters) in depth; Use a polymer modified concrete. Furnish polymer modified PCC repair material from the Oregon DOT Qualified Products List.

For other repair areas greater than 1 ½” inches (38 millimeters) in depth, apply a bonding coat of epoxy resin adhesive to the surfaces of the sound existing concrete immediately before placing new concrete against it. Follow the manufacturer’s recommendations for the epoxy resin adhesive. Use epoxy resin adhesive and hydraulic cement concrete repair material from the Oregon DOT Qualified Products List.

(b) Patch area preparation.

Extend the limits of repair at least 2 inches (50 millimeters) outside the deteriorated area. Saw cut vertically along the perimeter of the patch area, parallel to the existing joint, and to a minimum depth of 1½ inches (38 millimeters). Near vertical edges from milling or grinding machines are acceptable.

Break out concrete within repair areas to a minimum depth of 1½ inches (38 millimeters) to expose sound concrete.

After removal of loose, deteriorated or unsound concrete, shotblast exposed structural steel, reinforcing steel, and concrete surfaces which will be in contact with repair material until free of rust and foreign material. Clean the sound concrete surface by flushing with clean water from a high pressure water jet or compressed air. Remove and replace deteriorated reinforcing steel. Before placing repair concrete, thoroughly flush with clean water under pressure or compressed air. If compressed air is used, provide a filter in airline to ensure that the air is oil-free. If there is an interval of more than 24 hours between cleaning of the sound concrete surfaces that have been contaminated by substances detrimental to good bonding, clean by abrasive shot blasting and pressurized water flushing or remove the concrete.

Where the bond between existing concrete and reinforcing steel is destroyed, remove concrete adjacent to the steel to provide at least ¾-inch (19-millimeter) clearance for the new concrete to bond to the reinforcing steel. Use care to prevent damage to remaining concrete when achieving the final surface.

Do not cut or damage reinforcing steel designated to remain in place. Repair or replace damaged bars. Replace deteriorated bars as directed by the CO. Clean exposed reinforcing steel of coatings or residue that inhibits bonding with the new concrete.

Protect the steel from corrosion and contamination. If the steel becomes corroded or contaminated, re-clean the steel before placing concrete.

(c) Placing concrete.

Remove sandblasting residue immediately before placing the epoxy resin adhesive.

Apply an epoxy resin adhesive according to the manufacturer’s recommendations.

Delay concrete placement until the epoxy becomes tacky.

Place and consolidate the concrete to eliminate voids at the interface of the patch and existing concrete. Place and consolidate hydraulic cement concrete according to Subsection 552.11. Place and consolidate polymer concrete according to climate conditions and methods recommended by the manufacturer.

(d) Joints.

If a repair area abuts a working joint, repair the joint similar to the existing joint to maintain a working joint. Form a new joint to the same width as the existing joint.

Use compressible joint filler material as inserts to prevent intrusion of the repair material into the joint.

(e) Finishing concrete.

Finish patches according to Subsection 552.16, (a) Class 1, to match the plane and texture of the contiguous structure. Cure hydraulic cement concrete according to Subsection 552.15. Cure polymer concrete as recommended by the manufacturer.

571.20 Measure the Section 571 pay items listed in the bid schedule according to Subsection 109.02.

Payment

571.30 The accepted quantities will be paid at the contract price per unit of measurement for the Section 571 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

635 - Temporary Traffic Control

635.03_nat_us_05_13_2004

635.03 General.

Add the following:

Install temporary traffic control signs to temporary posts or approved temporary sign mounts.

712 - Joint Material

712.01_nat_us_07_03_2007

712.01 Sealants, Fillers, Seals, and Sleeves.

(b) Preformed expansion joint fillers.

Add to the end of the first sentence:

except on abutment, pier cap or other bent more than one piece may be used.

717 - Structural Metal

717.01_nat_us_07_03_2007

717.01 Structural Steel

(e) High-Strength Bolts, Nuts, & Washers.

Delete the first paragraph and replace with the following:

Conform to either AASHTO M164 or AASHTO M253, as specified. Use Type 3 bolts in combination with unpainted weathering structure steel. Conform to AASHTO M293 (ASTM F 436) for hardened steel washers.

Add the following subsections:

(f) Load-Indicating Washers.

Furnish load-indicating washers (Compressible-washer-type DTI's) conforming to ASTM F 959, Type 8.8 or 10.9. Use Type 8.8 with AASHTO M 164 bolts and with ASTM F 568, Class 8.8 tie rods; use Type 10.9 with AASHTO M 253 bolts. When galvanizing is shown on the plans, furnish DTI's mechanically galvanized to conform to AASHTO M 298, Class 50, Type I. When used with other components that are weathering steel or are to be coated the color of weathering steel, furnish DTI's protectively coated with baked epoxy in a black color.

(g) Steel Anchor Bolts.

Furnish steel anchor bolts of the dimensions shown on the plans. Furnish steel anchor bolts that conform to AASHTO M314, Grade 40 unless otherwise shown on the plans. Ensure that the exposed portion of the bolt is zinc coated by hot dip or mechanical deposition.

(h) Structural Steel Tubing.

Furnish structural steel tubing that conforms to ASTM A500, grade B or ASTM A501 unless otherwise shown on the plans.

717.07 Galvanized Coatings

Add the following:

Furnish hot-dipped galvanized hardware and fasteners conforming to AASHTO M 232 and mechanically galvanized hardware and fasteners conforming to AASHTO M 298.

Repair damaged galvanized surfaces by power or hand tool cleaning, followed by 2 brush applications of zinc rich 2 component paint meeting FS TT-P-641, FS TT-P-1046A or MIL-P-21035. Single component brush or spray-on zinc or galvanizing compounds are not permitted. A source for TT-P-641 paint is Far West Paint Company, Tukwila, WA 206-244-8844.

718 - Traffic Signing and Marking Material

718.05_nat_us_02_25_2008

718.05 Aluminum Panels

Delete the third paragraph and replace with the following:

Clean, degrease and properly prepare the panels according to methods recommended by the sheeting manufacturer. Conversion coatings will conform to ASTM B-921 or ASTM B-449.