FS_Supplemental_Specifications.docx

Table of Contents

618 Concrete Barriers and Precast Walls……………………………………………………..36

709 - Reinforcing Steel and Wire Rope......…………………………………………………..50 712 - Joint Material…………………………………………………………………………..52

Preface Preface_wo_03_15_2004_m 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 101.00_nat_us_07_25_2005

101.01_nat_us_01_22_2009

101.01 Meaning of Terms

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

101.01_nat_us_01_22_2009

101.01 Meaning of Terms

Delete all references to the FAR (Federal Acquisition Regulations) in the specifications.

101.03_nat_us_06_16_2006

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:

101.04_nat_us_03_29_2007

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 Stream course--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.

Figure 101-1—Illustration of road structure terms.

101.04_nat_us_11_06_2007

101.04 Definitions.

Delete the following definitions:

Contract Modification Day Notice to Proceed Solicitation 101.04_04_us_06_22_2009

101.04 Definitions.

Add the following:

Self Consolidating Concrete (SCC) – a highly-fluid and non-segregating concrete mixture that is able to flow and fill every part and corner of the formwork, even in the presence of dense reinforcement, purely by means of its own mass.

102 - Bid, Award, and Execution of Contract 102.00_nat_us_02_16_2005 102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work 103.00_nat_us_02_16_2005 Deletions

Delete all but subsection 103.01 Intent of Contract.

104 - Control of Work 104.00_nat_us_06_16_2006 Deletions Delete Sections 104.01, 104.02, and 104.04.

104.00_01_us_10_10_2006

104.03 Specifications and Drawings.

Delete 104.03.

104.06_nat_us_02_17_2005 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.

104.07_nat_us_02_17_2005 105 - Control of Material 105.00_01_us_10_13_2006

105.01 Source of Supply and Quality Requirements.

Add the following:

All materials incorporated into the project shall be certified noxious weed seed free, either through visual inspection or commercial certification.

105.02 Material Sources.

(a) Government-provided sources.

Add the following:

Complete any pit or quarry development specified for a designated source, even when material is not obtained from the source.

(b) Contractor-located sources.

Add the following:

Prior to any pit development or use of materials, the pit site shall be approved by the CO that the pit site is free of noxious weed as listed on the "All States Noxious Weeds List”.

105.04 Storing and Handling Material.

Add the following to the beginning of the first sentence:

Transport,

105.05 Use of Material Found in the Work.

Add the following:

Stockpile excess material at an approved location in a stable manner.

105.02_nat_us_01_18_2007

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.

105.02_nat_us_03_08_2007

105.02 Material Sources.

105.02(a) Contractor-provided sources.

Add the following:

All material (e.g., soil, gravel, sand, borrow, aggregate, etc.) transported onto National Forest System land or incorporated into the work will be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area.

105.02_nat_us_02_17_2005

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 106.01_nat_us_01_17_2013

106.01 Conformity with Contract Requirements.

Delete Subsection 106.01 and substitute the following:

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is most strict.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to 106.05 inclusive. The primary method of acceptance is specified in each Section of work. However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove and replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted, at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

(1) Sampling method;

(2) Number of samples;

(3) Sample transport;

(4) Test procedures;

(5) Testing laboratories;

(6) Reporting;

(7) Estimated time and costs; and

(8) Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory. Use a third party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol. If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

(1) Have the work accepted at a reduced price; or

(2) Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

106.01_nat_us_07_31_2007

106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility to the Public

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.09_nat_us_06_16_2006

107.08 Sanitation, Health, and Safety

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

107.10_nat_us_06_16_2006

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.

107.10_05_us_05_04_2007 108 - Prosecution and Progress 108.00_nat_us_02_16_2005 108 Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment 109.00_nat_us_02_17_2005 109 Deletions Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.00_01_us_10_10_2006

109.02 Measurement Terms and Definitions.

Change the following:

All references of “Mass” or “Masses” to “Weight” in U.S. Customary Units.

109.03 Weighing Procedures and Devices.

(c) Project weighing system.

Add the following:

Manual scales may be used if approved in writing by the CO and if the method of weighing meets all other contract requirements.

For aggregates weighed for payment, adjust scale weights of material to deduct the daily average moisture content in excess of 2 percentage points over optimum moisture as determined by AASHTO T 99 or the designated compaction method. If moisture determination is necessary, determine the daily average moisture content in accordance with AASHTO T 255, from not less than three representative samples of aggregate taken at random intervals each day that aggregate is being weighed.

109.02_nat_us_06_16_2006

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.

109.02_0114_us_06_09_2008

109.02 Measurement Terms and Definitions.

Add the following definition:

(q) Actual quantity. (AQ) These quantities are determined from measurements of completed work.

109.03_nat_us_02_17_2005

109.03 Weighing Procedures and Devices.

(c) Project weighing system. Add the following::

Manual scales may be used if approved in writing by the CO and if the method of weighing meets all other contract requirements.

151 - Mobilization

151.01_0105_us_05_04_2007

151.01 Description

Add the following at the end of the last sentence:

“Work also includes cleaning of all equipment used at the project site. Clean all construction equipment prior to entry on the project site. Remove all dirt, plant parts and material that may carry noxious weed seeds into the area. Only construction equipment inspected by the Forest Service will be allowed to operate within the project area. Treat subsequent move-ins of equipment the same as the initial move-in. Clean truck beds and dump boxes hauling to the project site prior to entering the work area.”

151.01_0114_us_08_04_2005

151.01 Description

Add the following:

This work consists of washing and treating construction equipment and vehicles necessary for equipment transport to remove seeds, plants, and plant fragments before the equipment is used on Forest Service lands.

Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment. Only equipment inspected by the Forest Service will be allowed to operate within the project area. All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in. This requirement does not apply to cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas off the National Forest.

Equipment will be considered free of soil, seed, and other such debris when a visual inspection does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Notify the CO in writing at least 24 hours before moving any construction equipment onto the national forest. Notification will include an agreed upon location where the equipment will be available for inspection by the Forest Service. Inspection will be required after every cleaning.

Use methods of cleaning and locations for cleaning approved by the C.O.

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

New infestations of noxious weeds of concern to Forest Service and identified by either Contractor or Forest Service, on the Project Area or on the haul route, will be promptly reported to the other party. Contractor and Forest Service will agree on treatment methods to reduce or stop the spread of noxious weeds when new infestations are found. A current list of noxious weeds of concern to Forest Service is available at each Forest Service office.

153 - Contractor Quality Control 153.02_nat_us_02_17_2005

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.

153.02_04_us_06_22_2009 154 - Contractor Sampling and Testing 154.01_nat_us_05_24_2005

154.01 Description

Delete the last sentence of the first paragraph.

155 - Schedules for Construction Contracts 155.00_nat_us_05_11_2004 155 Delete.

Delete Section 155 in its entirety.

156 - Public Traffic 156.00_nat_us_04_17_2007 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:

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. Delays may not exceed _10_ 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 retroreflective 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 days of closure shall be followed by a minimum number of consecutive days 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 10 days in advance.

Table 156-1 Temporary Road Closures

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

Measurement and Payment

156.07 Do not measure Public Traffic for payment. Compensation is made as an indirect payment.

156.00_01_us_10_10_2006

157 - Soil Erosion Control 157.00_01_us_10_10_2006

157.02 Materials

Add the following:

Provide bales, wattles, logs and rolls from a certified noxious weed free source.

157.03 General.

Delete the first two paragraphs and replace with the following:

Prepare, file and submit storm water permits as required by the State with jurisdiction, including payment of necessary fees. The storm water permits shall be for ___ outfalls.

Submit an Erosion Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans and storm water permits. Do not modify the type, size, or location of any control or practice without approval. Submit the erosion control plan proposal at least 7 days before operations begin to the CO for approval.

Reflect in the Erosion Control Plan special concerns and measures necessary to protect resources and government improvements. Include:

(a) The construction activities and sequence of implementation relating to specific erosion control measures.

(b) The location and type of permanent controls to be implemented during construction.

(c) The location and type of temporary controls to be implemented during construction.

(d) For work in stream channels with running water a detailed dewatering plan.

(e) For work in stream channels without flowing water describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

(f) Description of the monitoring plan.

Add the following to the third paragraph:

Upon completion of construction at the site, remove all temporary erosion control devices, dewatering materials and equipment from Government property.

157.08 Water Crossings.

Add the following:

At any channel crossing where there is running water, dewater by rerouting water flow around the site before and during excavation and embankment operations.

157.09 Diversions.

Delete the first sentence and replace with the following:

When shown on the plans, construct temporary channels, temporary culverts, or sandbags to divert water around disturbed areas and slopes. Earthen dams are prohibited.

203 - Removal of Structures and Obstructions 203.00_01_us_10_11_2006

203.01 Description.

Delete and replace with the following:

This work consists of disposing of construction slash and debris, salvaging, removing, and disposing of buildings, fences, structures, pavements, culverts, utilities, curbs, sidewalks, and other obstructions.

203.02_nat_us_02_18_2005

203.02 Material.

Add the following:

Geotextile 714

203.03_0510_us_01_25_2005

203.03 Salvaging Material.

Delete this subsection and add the following:

Unless shown on the plans, remove all designated material from the project area and National Forest land.

203.08 PAYMENT.

Add after the first sentence:

“Payment is based upon the removal and disposal of all structures designated in the contract, and DOES NOT included the excavation necessary to access these structures.”

209 - Structure Excavation and Backfill 209.10_1005_us_05_04_2005

209.01 Description.

Delete and replace the second sentence with the following:

The work includes preserving channels, shoring and bracing, sealing foundations, dewatering, excavating, stockpiling, preparing foundations, bedding, and backfilling.

209.07 Dewatering.

Add the following:

Do not pump water from the foundation excavations directly into live streams or marine waters. Pump water into settling areas as specified in the contract.

209.10 Backfill.

Delete and replace the first sentence with the following:

Place backfill in horizontal layers that when compacted do not exceed 12 inches in depth.

Add the following after the third paragraph:

Place rock backfill that is 9-12 inches in its largest dimension against the marine log crib structure, in a manner so that the rock does not damage the timber crib structure members or the geotextile material.

209.11_nat_us_02_24_2005

209.11 Compacting.

Delete the subsection and add the following:

Compact backfill using designated compaction method A, B, or C:

Method A. Ensure that backfill density exceeds the density of the surrounding embankment.

Method B. Adjust the moisture content of the backfill material to a moisture content suitable for compaction. Compact each layer using appropriate compaction equipment until visual displacement ceases. For compaction under sections 252, 254, 255, 257, 258 and 262 compact with a vibratory steel wheeled roller with a mass of at least 8 tons.

Method C. Determine optimum moisture content and maximum density according to AASHTO T 99 method C. Adjust the moisture content of the backfill material to a moisture content suitable for compaction. Compact material placed in all layers to at least 95 percent of the maximum density. Determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

Table 209-1 Sampling and Testing Requirements Add the following:

(2) Compaction methods (A) and (B) do not require AASHTO T-99 or T-310 test methods for foundation fill.

209.11_0114_us_02_15_2005

209.12 Acceptance

Add the following:

Compaction methods (A) and (B) do not require sampling and testing.

209.13 Measurement and Payment.

Delete and replace the second paragraph with the following:

Measure the structural excavation for marine structures by the cubic yard in its original position. Include the following volumes in marine structure excavation:

251 - Riprap 251.00_01_us_10_11_2006

251.01 Description

Delete the first sentence and add the following:

This work consists of furnishing, hauling, and placing of riprap for bank protection, slope protection, drainage structures, erosion control, and other features shown on the plans.

251.02 Material.

Add the following:

When shown on the plans stone from the project site may be utilized.

251.07 Acceptance

Delete sampling and testing requirements of Table 251-1 and certification requirements of Subsection 106.03.

251.09 Payment.

Add the following:

The cost of excavation, embankment and haul required for placement of riprap is incidental to pay items listed in the bid schedule. No payment will be made under Item 251.

252 - Special Rock Embankment and Rock Buttress 252.00_01_us_10_11_2006

252.01 Description

Add the following:

Flagstone rock placement

252.02 Material

Add the following:

Geotextiles, Type IV (A, B, or C) 714.01 Change the Subsection under Rock for buttresses from 705.05 to 705.02

252.03 Placing Rock.

Add the following:

Place geotextile according to Subsection 207.05. When geotexitle is in place, request approval from the CO before placing rock on geotextile.

Section 258. — REINFORCED CONCRETE RETAINING WALLS

Description

258.1 This work consists of constructing reinforced concrete retaining walls.

Material

258.2 Conform to the following Sections and Subsections:

Construction Requirements

258.3 General. Survey according to Section 152, and verify the limits of the wall installation. Prepare and submit forms and falsework drawings according to Section 562. Perform the work under Section 209.

258.4 Reinforcing Steel. Submit all order lists and bending diagrams according to Subsections 104.03 and 554.03. Fabricate reinforcing steel according to Subsection

554.05. Ship and protect material according to Subsections 554.04 and 554.06. Place, fasten, and splice reinforcing steel according to Subsections 554.08 and 554.09.

258.5 Structural Concrete. Design concrete mixture according to Subsection 552.03. Store, handle, batch, and mix material and deliver concrete according to Subsections

552.04 through 552.08. Provide quality control according to Section 153 and Subsection

552.09. Construct wall according to Subsections 552.10 through 552.16.

258.6 Backfilling. Backfill the area behind the wall with structural backfill according to Subsection 209.10. Compact each layer according to Subsection 209.11 except use an approved lightweight mechanical or vibratory compactor within 3 feet of the wall.

258.7 Acceptance. Reinforced concrete retaining wall material, construction, and services will be evaluated as follows:

Survey work will be evaluated under Section 152.

Forms and falsework drawings will be evaluated under Section 562.

Structure excavation and backfill will be evaluated under Section 209. Concrete will be evaluated under Section 552.

Reinforcing steel will be evaluated under Section 554.

Material for joint fillers, sealants, tie bars, dowel bars, and hook bolts will be evaluated under Subsections 106.02 and 106.03.

Measurement

258.8 Measure the Section 258 items listed in the bid schedule according to Subsection

109.02 and the following as applicable.

Measure by the cubic yard of concrete in the structure including footings.

Measure the square foot area by the length of the front wall face and the height excluding footings.

Measure foundation fill under Section 208.

Payment

258.09 The accepted quantities will be paid at the contract price per unit of measurement adjusted according to Subsection 106.05 for the Section 258 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

The accepted quantities of reinforced concrete retaining wall will be paid for at the contract unit bid price multiplied by an adjusted pay factor (PFa) determined as follows:

PFa = 1 - 0.5 (1-PF) where:

PF = Pay factor for concrete as determined under Section 552.

308 - Minor Crushed Aggregate 308.00_01_us_10_11_2006 Delete section 308 in its entirety and replace with the following:

Description

308.01 This work consists of furnishing and placing crushed aggregate for bedding, backfill and roadway aggregate course.

Material

308.02 Conform to the following Subsections:

Construction Requirements

308.03 Preparing Surface. Prepare the roadway surface on which aggregate course is placed as shown on the plans.

308.04 Placing Crushed Aggregate.

(a) Roadway 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(a) before placing the next layer.

(b) Bedding and backfill aggregate. Place and shape the mixture in layers that, when compacted, do not exceed 6 inches in depth.

308.05 Compacting and Finishing Crushed Aggregate.

(a) Roadway aggregate. Compact using the methods below, specified in the Schedule of Items.

(1) Method 1. Operate equipment over the full width of spread aggregate.

(2) Method 2. Compact the aggregate by operating compaction equipment over the total width until visible deformation ceases. A minimum of three complete roller passes shall be made at a moisture content suitable for compaction.

(b) Bedding and backfill aggregate. Compact in 6 inch lifts by using a Forest Service approved mechanical compactor until no visible deformation is observed over the entire area of aggregate.

308.06 Acceptance. Crushed aggregate will be evaluated under Subsections 106.02 and 106.03. Furnish a production certification including gradation and quality properties for each source.

Construction of roadway aggregate courses will be evaluated under Subsections 106.02 and 106.04. Method 2 compaction will be evaluated under Section 106.04.

Placement of bedding and backfill aggregate will be evaluated under Subsection 106.02 and Section 209.

Preparation of the surfaces on which crushed aggregate is placed will be evaluated under Section 303 and 209 as applicable.

308.07 Measurement

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 on the road.

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

308.08 Payment

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.

551 - Driven Piles 551.01_1005_us_05_20_2005

551.01 Work.

Add the following:

This work also consists of installing pile caps, bracing and all work required to complete the pile assembly.

551.02 Requirements.

Add the following:

551.08 Preparation and Driving.

Add the following:

(e) Incidental Construction. Install pile caps, bracing, and all other required work.

551.09 Splices.

Delete the first sentence of the third paragraph of Subsection 551.09 (a) Steel piles and replace with the following:

Weld in accordance with AASHTO/(AWS) D 1.5, Bridge Welding Code, or in accordance with AWS D 1.1, Structural Welding Code, for tubular/pipe sections.

Add the following to Subsection 551.09 (a) Steel piles.

Repair galvanized coatings damaged by welding according to ASTM A780.

551.11 Pile Load Tests.

Add the following:

Furnish a shelter to protect the dynamic test equipment from the elements. Locate the shelter within 50 feet of the test location. Provide a shelter with a minimum floor size of 65 ft2 and minimum ceiling height of 6.5 ft. Maintain the inside temperature between 50 °F and 95 °F.

Provide a suitable electrical power supply for the test equipment. If field generators are used as the power source, provide functioning meters for monitoring power voltage and frequency.

551.12 Pile Cutoffs.

Add the following:

Ensure full bearing between timber caps and piles by making accurate, square cuts.

(b) Wood Piles.

Delete the last sentence of the first paragraph of Subsection (1) and replace with the following:

Brush apply one application of creosote-coal tar solution or other required preservative as required in AWPA standards.

551.03_nat_us_08_05_2009 Construction Requirements

551.03 Pile Driving Equipment

(b) Approval of pile driving equipment.

Delete the first two paragraphs and replace with the following:

Furnish pile driving equipment of such size that the permanent piles can be driven with reasonable effort to the required lengths without damage. The energy of the driving equipment submitted for approval, as rated by the manufacturer, must be at least 10,000 foot-pounds.

(1) Equipment submittal.

Delete the last three sentences in the first paragraph.

(2) Wave equation. Omit this subsection.

0. Pile Lengths.

Delete first paragraph and replace with the following:

Furnish piles in accordance with the itemized pile order list shown on the plans. The order lengths may be longer than the Government estimates will remain in the structure, to provide a margin of safety in case piles have to be driven deeper than anticipated. All piling furnished and paid for is the property of the Government, including piling not driven to full penetration as directed by the CO. For cutoff pile lengths over 10 feet, deliver these to a storage area designated by the CO. For cutoff pile lengths less than 10 feet or any designated to be removed by the CO, remove the material from Forest Service land in accordance with Section 202.

Furnish pile lengths less than 60 feet long as one piece, unless field splices, at the contractors expense, are approved in writing at the time of material submittal.

551.06 Driven Pile Capacity.

Add the following at the end of the first paragraph:

Drive piles to the minimum tip elevations shown on the plans. If a pile reaches refusal above the minimum tip elevation shown on the plans, do not overdrive the pile. Refusal is defined as 7 blows/inch.

Delete paragraph two and subsections (a) and (b).

0. Preparation and Driving.

Delete the second paragraph and replace with the following:

Drive piles to within 3 inches of plan location at cutoff elevation; provide a minimum of 9 inches cover to any cap face. Drive piles so that the axial alignment is within 1/4 inch per foot, along the longitudinal axis, of the required alignment. The CO may stop driving to check the pile alignment. Check alignment of piles that cannot be internally inspected after installation before the last 5 feet are driven. Do not pull laterally on piles or splice to correct misalignment. Do not splice a properly aligned section on a misaligned pile.

551.09 Splices.

(a) Steel Piles.

Delete the last sentence of the last paragraph and replace with the following:

Approved proprietary manufactured splices may be used in place of full penetration groove butt welds; submit manufacturer's literature and attachment instructions to the CO for approval.

551.16 Measurement.

Delete paragraph two and replace it with the following paragraphs:

Measure furnished piles by the linear foot as given in the pile order list.

Measure driven piles by the linear foot from the final pile tip elevation to the cutoff elevation.

552 - Structural Concrete 552.02_nat_us_06_20_2007 Material

552.02 Add the following:

Construction Requirements

0. Composition (Concrete Mix Design).

Delete Tables 552-1, 2, and 3 and replace with the following:

Table 552-1 Composition of Concrete

(pound per cubic yard)

(inches) Maximum Nominal Coarse Aggregate Size (5) (inches)

(1) Maximum slump is 8 inches if approved mix design includes a high-range water reducer.

(2) Concrete with a water reducing and retarding admixture conforming to AASHTO M 194, type D.

(3) A latex modified concrete with 0.037 gallons of modifier per pound of cement.

(4) Measure the slump 4 to 5 minutes after the concrete is discharged from the mixer.

(5) Meeting the processing requirements of AASHTO M43, Table 1 – Standard Sizes of Processed Aggregate.

(6) Use Class P (AE) concrete in the entire depth of the top flange of all multi-beam bridge girders. In lieu of this, Class P (AE) concrete may be used for fabrication of the entire girder, and throughout the entire depth of prestressed slabs. In all cases, furnish concrete meeting the 28 day specified minimum concrete strength requirements for the prestressed members as shown on the plans, unless otherwise specified.

Table 552-2 Minimum Air Content for Air Entrained Concrete Nominal Maximum Aggregate Size (1) As Delivered Minimum Air Content (2) (3) (%)

(1) Meeting the processing requirements of AASHTO M 43, Table 1 – Standard Sizes of Processed Aggregate.

(2) These air contents apply to the total mix. When testing these concretes, aggregates larger than 1½ inches are removed by handpicking or sieving, and air content is determined on the minus 1½-inch fraction of the mix. Air content of the total mix is computed from the value determined on the minus 1½-inch fraction.

(3) For P(AE) concrete, the as delivered minimum air contents may be reduced 1.0 % and the maximum air content is 6.0 %

Table 552-3 Required Average Compressive Strength (1) Specified Compressive Strength (f’c) (psi) Required Average Compressive Strength (f’cr) (psi)

(1) Use this table when there is not enough data available to establish a standard deviation

Delete the first paragraph after Table 552-2 and replace with the following:

Submit written concrete mix designs for approval at least 30 calendar days before production.

Add the following under the list of items to be included in the mix design submittal:

(y) Evaluation of potential aggregate reactivity

552.08 Delivery.

1. Truck mixer/agitator.

Add the following:

Do not exceed 130 total revolutions at mixing speed, including both initial mixing and remixing. Do not exceed 300 total revolutions, including both mixing and agitating speed.

0. Quality Control of Mix.

Add the following after the first paragraph:

At least 2 weeks prior to the start of concrete placement operations, arrange a pre-concrete placement conference. Coordinate attendance with the CO and any applicable subcontractors. Be prepared to discuss and/or submit the following:

(1) Proposed concrete placement schedule.

(2) Review approved concrete mix design and determination of batch weights.

(3) Discuss Section 153, Contractor Quality Control, minimum frequency schedule for process control sampling and testing (to be performed by the Contractor).

(4) Discuss batching, mixing, placing, and curing requirements.

(5) Discuss Subsections 106.03, Certification, and 106.05, Statistical Evaluation of Material for Acceptance.

552.11 Handling and Placing Concrete.

Add the following after the forth paragraph:

Use an approved form release agent to produce a minimum of staining, air holes, and hydration discoloration.

0. Construction Joints.

Add the following at the end of the first paragraph:

Provide form cleanout ports at construction joints.

552.18 Loads on New Concrete Structures.

Add the following paragraph:

Do not allow vehicle traffic on new concrete slab until full compressive strength has been achieved.

552.02_04_us_06_22_2009

Add the following to Table 552-9

Table 552-9 Sampling nd Testing Requirements

Material or Product Type of Acceptance (Subsection)

Specifications Sampling Frequency Point of Sampling

Structural concrete

SCC

(552.09 (b)(3)) Measured and Tested For Conformance (106.04) Unit Mass

Air Content

Slump Flow

Temperature

Visual Stability Index

AASHTO T 121

AASHTO T 152 or T 196

ACI 237

Field Measured

ACI 237

1 per load

Point of Discharge

Upon Completing Tests

552.13_nat_us_08_12_2004 Section 618. — CONCRETE BARRIERS AND PRECAST GUARDWALLS

Description

618.1 This work consists of constructing and resetting concrete barrier and precast concrete guardwall systems.

Material

Construction Requirements

618.3 General. Excavate and backfill according to Section 209. Construct barriers and guardwalls that meet crash test requirements of NCHRP Report 350, Recommended Procedures for Safety Performance and Evaluation of the Highway Features.

618.4 Concrete Barriers. Concrete barriers may be cast-in-place, slip-formed, or precast according to Section 552. Finish the sides and top according to Subsection 552.16(a).

(a) Cast-in-place. Hand form or saw contraction joints 1/4 inch wide and 2 inches deep at 20-foot intervals. Saw as soon as possible after the concrete has set sufficiently to preclude raveling during sawing, but before shrinkage cracking occurs. Decrease the depth of the saw cut at the edge adjacent to the pavement to prevent pavement damage.

Place 3/4-inch preformed joint filler in all construction joints. Cut the joint filler to fit the cross-sectional area at structures and barrier…