Specs.docx

STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS

FP-03 : U.S. CUSTOMARY UNITS

SPECIFICATION LIST

PROJECT NAME Sailor Creek Culvert Replacement DATE: 20 May 2010

Road Number

FR 136

Road Name

Gates Lake

Termini

Sta. 12+50 to Sta14+00

Sub Unit

Park Falls

County

Price

THE FOLLOWING STANDARD SPECIFICATIONS SHALL APPLY TO THIS CONTRACT

Preface

Major Structures

Special Note: The above is a list of major specifications applicable to this contract. Other specifications referred to within these specifications, (even though not specifically listed) are also fully applicable to the solicitation and any resultant contract.

SECTION 1 DESCRIPTION/SPECIFICATIONS/WORK STATEMENT

The specification document indicated below is hereby made a part of this contract:

Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects, FP-03:US Customary Units

Applicable portions and Special Project Specifications are listed on the Specification List and include any standard specifications referenced therein.

STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS FP-03: US CUSTOMARY UNITS SPECIAL CONTRACT REQUIREMENTS Sailor Creek Culvert Replacement At FR 136 Preface 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.

SPECIAL CONTRACT REQUIREMENTS

Section 101. Terms, Format and Definitions

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-03 to Transportation Acquisition Regulations (TAR).

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NBS

NESC

WCLIB

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

Delete subsections (b) SI symbols, (c) SI Prefix symbols, and (d) Slope notation and add the following:

(b) English Abbreviations.

AL. - Aluminum ASP. - Asphalt B.W. - Barbed Wire B.C.C.S.P. – Bituminous Coated Corrugated Steel Pipe CEMT. – Cement CEMT.T. – Cement Treated CTB – Cement Treated Base CLEAR & GRUB – Clearing & Grubbing CMPCT. – Compaction CONC. – Concrete CMP – Corrugated Metal Pipe C.S.P. – Corrugated Steel Pipe C.S.P. ARCH – Corrugated Steel Pipe Arch C.Y. – Cubic Yard C.Y.MI. – Cubic Yard Mile DIA. – Diameter EA. – Each EMLSFD. – Emulsified E&P CONTROL – Erosion and Pollution Control FABR. – Fabricated FOUND. – Foundation FURN. – Furnished GAL. – Gallon GR. – Grade HT. – Height H. STRENGTH – High Strength HOR. – Horizontal HR. – Hour L.F. – Linear Foot LD. – Loading L.S. – Lump Sum MAT’L – Material MAX. – Maximum M. – Method MI. – Mile MIN. – Minute MFBM – One Thousand Feet Board Measure M. GALS. – One Thousand Gallons M.GALS.MI. – One Thousand Gallons Mile M.S.F. – One Thousand Square Feet PVC – Polyvinylchloride LBS. – Pounds REFLECT. – Reflectorized SEC. – Section S.F. – Square Foot S.Y. – Square Yard STA. – Station STA. YD. – Station Yard STRUCT. - Structural S. STEEL – Structural Steel STMP – Stump TV – Target Value TH. – Thickness T.M. – Ton Mile T&L – Tops and Limbs UOT – Utilization of Timber VERT. – Vertical WH. – White W. – Width W/ - With W/O – Without W.W. – Woven Wire YE. - Yellow

(c) Slope notation (horizontal : vertical).

Express the slope as the ratio of a number of units of horizontal to one unit vertical.

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. As used in specifications and drawings for specified roads (Timber Sale Contracts), “Contractor” is “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.

101.04 Definitions.

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.

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.

Delete and replace the following definitions:

Roadway--The portion of the road within the limits of excavation and embankment, including slope rounding.

Roadside--A general term denoting the area adjoining the outer edge of the roadway to the R/W.

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

Figure 101-1—Illustration of road structure terms.

Section 102. Bid, Award and Execution of Contract

Delete Section 102 in its entirety.

SPECIAL CONTRACT REQUIREMENTS

Section 103. Scope of Work

Delete all but subsection 103.01 Intent of Contract.

SPECIAL CONTRACT REQUIREMENTS

Section 104. Control of Work

Delete sections 104.01, 104.02, and 104.04.

104.03 Specifications and Drawings.

Add the following:

(c) As-Built-Plans. Furnish one set of as built plans to the Government. The Government will provide one set of contract plans to be used exclusively for recording the as-built details of the project. Use red pencil or red ink to record the information described below.

Note all additions or revisions to the location, character, and dimensions of the prescribed work shown on the contract plans. Line out all details shown that are not applicable to the completed work. Check off details shown that were incorporated into the completed work without change.

Retain the plans at the project site and, as work progresses, continuously update them to reflect the as-built details. Upon request, make the plans available to the CO to review for compliance with these specifications.

As a minimum, show the following types of changes on the as-built plans:

(1) Typical section(s)

(a) Revisions in dimensions

(b) Revisions in materials

(2) Plan and profile

· Revisions to the alignment

· Changes in the construction limits

· Revisions in location, type, and grade of road approaches

· Location and type of utilities

· Location, size, and type of underdrains

· Skew of culverts

· Channel changes

· Location of monuments and permanent references

· Elevations for all aerial and underground crossings of utilities

· Location, length, and type of fencing

· Revisions to grades, elevations, and stationing of intersection PIs

· Equations

· Culvert diameter, length, type, and stationing. On culvert extensions, indicate the length of the existing pipe and the length of the extension.

· Location, length, stationing, and type of retaining walls

· Location, length, stationing, and end treatment of guardrail

(3) Bridge

(a) Stationing of bridge ends

(b) Revisions to footing and seal elevations

(c) Pile length, size, type, and tip elevation

(d) Any changes in plan or dimensions including any major changes in reinforcing

(4) Miscellaneous

(a) Revisions to parking areas or turnouts

(b) Final location, type and length of curbs, sidewalks, etc.

Furnish the as-built working plans to the CO before the final inspection. Correct all details found during the final inspection that are not shown on the as-built plans and return to the CO within 5 working days.

104.05 Load Restrictions.

Add the following:

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.

Section 105. Control of Material

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.

105.05 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.

Section 106. Acceptance of Work

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 more 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.

Delete subsection 106.07.

Section 107. Legal Relation and Responsibility to the Public

107.02 Protection and Restoration of Property and Landscape.

Add the following:

If work will occur in 2010 then: Do not work during the following holidays: Memorial Day Weekend, Thursday May 27 through Tuesday June 1; The Fourth of July Weekend, Thursday July 1 through Tuesday July 6; and Labor Day Weekend, Thursday September 2 through Tuesday September 7.

All seeding shall be completed between June 1 and September 15.

107.05 Responsibility for Damage Claims.

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”.

107.08 Sanitation, Health, and Safety.

Add the following:

Perform all operations in a prudent, conscientious, safe and professional manner. Ensure that all personnel involved in handling and packaging the hazardous waste be trained for the level of expertise required for the proper performance of the task and, in particular, in the areas of chemical incompatibility, general first aid procedures and spills. Provide handling and personnel protective equipment appropriate to ensure safe handling of the hazardous waste (at a minimum, in accordance with 29 CFR 1910.120). Provide notification to the Forest Service of all hazardous material that may be brought onto the National Forest as part of accomplishing the tasks under this contract.

107.09 Legal Relationship of the Parties.

Delete the entire subsection:

107.10 Environmental Protection.

Add the following:

Do not locate equipment repair shops, stationary refueling sites, or other facilities where hazardous material may be spilled on Government land.

Before beginning any work, submit a Hazardous Spill Plan. In the 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, etc. Immediately notify the CO of all hazardous spills. Provide a written report in narrative 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 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. Include copies of all spill related clean-up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for any and all spills or leaks and subsequent clean ups required during the performance of this contract which occur as a result of or are contributed to by the actions of its agents, employees, or subcontractors. Clean up such spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations. Perform the clean up at no cost to the Government.

107.11 Protection of Forests, Parks, and Public Lands.

Add the following:

Equipment Cleaning:

The Contractor is also responsible for all equipment that is brought to the site to be cleaned to ensure that the equipment is weed free. All equipment will be inspected by the CO prior to being offloaded or stored at the site.

Also add the following:

Immediately extinguish without expense to the Government all fires on or in the vicinity of the project which are caused by the Contractor’s employee’s, whether set directly or indirectly as a result of construction operations, with or without direction by the Forest Service. The Contractor may be held liable for all damages and costs of additional labor, subsistence, equipment, supplies, and transportation deemed necessary by the Government resulting from fires set or caused by Contractor’s employees or resulting construction operations.

Contractor’s Responsibility for Controlling Other Emergencies - When requested by the Contracting Officer, allow the Forest Service to temporarily use employees and equipment for emergency control work. Payment will be made at not less than the current area rate established by the Forest Service.

Do not burn camp refuse, brush, slash, or debris such as that resulting from clearing around camps or on rights-of-way, without the written approval of the Contracting Officer. Submit written requests for burning to the Contracting Officer at least 48 hours in advance of intended burning. The Contracting Officer will approve routine camp refuse disposal incineration in the camp development proposal.

SPECIAL CONTRACT REQUIREMENTS

Section 108. Prosecution and Progress

Delete Section 108 in its entirety.

SPECIAL CONTRACT REQUIREMENTS

Section 109. Measurement and Payment

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.

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.

109.03 Weighing Procedures and Devices.

c) Project weighing system. Add the following::

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.

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

SPECIAL CONTRACT REQUIREMENTS

Section 153. Contractor Quality Control

153.02 Contractor Quality Control Plan.

Add the following:

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

153.04 Records.

Delete all but the first paragraph.

Section 155. Schedules for Construction Contracts

Delete Section 155 in its entirety.

SPECIAL CONTRACT REQUIREMENTS

Section 156. Public Traffic

156.03 Accommodating Traffic During Work.

Delete the first paragraph and replace with the following:

Accommodate traffic according to the requirements set forth below, MUTCD, and Section 635. Submit a traffic control plan for acceptance at least 10 days before intended use.

The contractor will be allowed a maximum period of two weeks closure to through traffic on FR 136. All construction must be sufficiently progressed to allow for safe passage of the general public across the new structures by October 31, 2010

156.04 Maintaining Roadways During Work.

(a) Add the following:

Do not construct detours outside of the clearing limits or use alternate route detours without the approval of the CO.

156.08 Traffic and Safety Supervisor.

Delete this section in its entirety.

Section 157. Soil Erosion Control

157.01 Description.

Including construction of temporary diversion channels.

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.

157.09 Diversions.

Delete the 1st sentence and add the following:

Construct temporary channels, temporary culverts, or sandbags to divert water around disturbed areas, slopes, and work areas. Earthen dams are prohibited.

157.13 Maintenance and Cleanup

Delete the third paragraph.

157.16 Payment

Delete all but the first paragraph.

Section 201. Clearing and Grubbing

201.02 Delete: Tree wound dressing material reference.

201.03 General.

Delete the last sentence.

201.04 Clearing.

Delete the last sentence of (d).

201.04 Clearing. (c)

Replace with the following:

(c) In areas outside the excavation, embankment, and slope rounding limits, cut stumps to within 12 inches or one-third of the stump diameter of the ground, whichever is higher, measured on the side adjacent to the highest ground.

NOTE: This work, including any disposal, is incidental to Pay Item 203

SPECIAL CONTRACT REQUIREMENTS

Section 203. Removal of Structures and Obstructions

203.01.

Delete and replace with the following:

This work consists of disposing of clearing slash, salvaging, removing, and legally disposing of fences, pavements, culverts, utilities, and other unneeded obstructions.

203.02.

Add the following:

Geotextile 714

203.03 Salvaging Material

Add the following:

There is no material to be salvaged in this contract

203.05 Disposing of Material.

(a) Remove from project.

Delete the last two sentences

203.05 Disposing of Material.

(f) Scattering. Scatter construction slash outside the clearing limits without damaging trees. Limb all logs. Place logs and stumps away from trees, positioned so they will not roll, and are not on top of one another. Limb and scatter other construction slash to reduce slash concentrations.

Section 204. Excavation and Embankment

204.05 Conserved Topsoil.

Delete the subsection

204.06 Roadway Excavation.

Add the following:

Road pioneering, slash disposal, and grubbing of stumps may proceed concurrently with excavation. Conduct excavation and placement operations so material to be treated under Section 201 will not be incorporated in the roadway unless specifically included in the slash treatment method.

Remove snow and ice in advance of the work and deposit beyond the roadway limits in a manner that will not waste material or generate sediment. Do not incorporate snow and ice into the embankment. Do not place snow or ice in a manner to cause damage.

204.06 Roadway Excavation

Add the following:

(b) Rock Cuts.

When blasting rock, use blasting methods according to Subsection 205.08

204.09 Preparing Foundation for Embankment Construction.

Delete subsection (a) and replace it with the following:

(a) Embankment less than 3 feet high over natural ground. When designated, remove topsoil and break up the ground surface to a minimum depth of 6 inches by plowing or scarifying. Compact the ground surface according to Subsection 204.11.

204.10 Embankment Construction.

(a) General.

Delete the third paragraph and add the following:

Compact embankment side slopes flatter than 2:1 with a tamping type roller or by walking with a dozer. For slopes 2:1 or steeper, compact the slopes as construction of the embankment progresses.

204.11 Compaction.

Delete the first paragraph and replace it with the following:

For compaction under method (a), (b), or (c), use AASHTO T 27 to determine the amount of material retained on a Number. 4 sieve. For compaction methods (d) or (e) no sieve test is required and compact as the method requires.

Add the following compaction methods:

(d) Layer Placement Method (Hauling and Spreading Equipment). Material may be initially placed by end dumping to the minimum depth needed for operation of spreading equipment. Level and smooth each embankment layer before placement of subsequent layers. Operate hauling and spreading equipment uniformly over the full width of each layer. Construct a solid embankment with adequate compaction by working smaller rock and fines in with the larger rocks to fill the voids, and by operating hauling and spreading equipment uniformly over the full width of each layer as the embankment is constructed.

(e) Layer Placement (Roller Compaction) Method. Place embankments as specified in the layer placement method. Ensure that material is at moisture content suitable to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases or, in the case of the sheepsfoot roller, the roller “walks out” of the layer. Make at least three complete passes.

204.13 Sloping, Shaping, and Finishing.

Delete section (d) and add the following:

(d) Finishing. Finish the road surface to be smooth, uniform, and shaped to conform to the typical sections. Remove unsuitable material from the roadbed and replace it with suitable material. Finish roadbeds to the tolerance class shown in table 204-2.

Ensure that the subgrade for both surfaced and unsurfaced roads is visibly moist during shaping and dressing. Bring low sections, holes, cracks, or depressions to grade with suitable material. Maintain proper ditch drainage.

Finish the roadbed for unsurfaced roads using one of the following methods:

(1) Method A. Ensure that the top 6 inches below the finished roadbed contains rocks no larger than 6 inches. Remove oversize material from the roadbed and replace it with suitable material

(2) Method B. Roll the roadbed to break down rocky material. Roll a minimum of five full-width passes, or until visual displacement ceases, with a vibratory grid roller or equivalent with a minimum mass of 10 tons.

(3) Method C. Tractor finish work by spreading the excavation for roads designated as Construction Tolerance Class K, L, or M. Eliminate rock berms that may form during embankment construction with a tractor finish.

204.14 Disposal of Unsuitable or Excess Material.

Delete the text of the first paragraph and substitute the following:

Unsuitable material may be used on slopes where it will to be subject to erosion into wetlands, rivers, or streams. Any unsuitable material not used on slopes or onsite shall be disposed of at designated sites or legally off of the project.

Table 204-1 Sampling and Testing Requirements.

Add the following note to the table:

When compaction methods (d) or (e) are used AASHTO M 145, T 99, T 180, and T 310 are not required for earth embankment test methods.

Add Table 204-2—Construction Tolerances:

Table 204- 2- Construction tolerances.

Tolerance Class(a)

Subgrade elevation (ft)

a. Maximum allowable deviation from construction stakes and drawings.

b. Maximum allowable deviation from staked slope measured from slope stakes or hinge points.

c. Unless otherwise shown the centerline alignment and subgrade elevation, as built, have no horizontal curves with a radius of less than 80 feet, and no vertical curves with a curve length of less than 80 feet when the algebraic difference in the grade change is less than 10 percent, or a curve length of less than 100 feet when the algebraic difference of the grade change is greater than or equal to 10 percent. The centerline grade is not to exceed 20 percent in 100 feet of length.

204.15 Acceptance

Table 204-1 Sampling and Testing Requirements.

Add the following note to the table:

(2) When compaction methods (d) or (e) are used AASHTO M 145, T 99, T 180, and T 310 are not required for earth embankment test methods.

Section 208. Structure Excavation and Backfill for Selected Major Structures

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."

208.06 Cofferdams.

Add the following:

Maintaining 25% of the stream flow shall be required when constructing cofferdams. This may be done by use of pumping, creating a diversion channel, or other Method Approved by the CO. The work involved with maintaining the stream flow shall be considered incidental to Pay Item 60202 Culverts.

Delete subsections (a), (f), and (g) and add the following:

(a) Cofferdams shall be constructed by sand bagging, sheeting, or other Method Approved by the CO.

208.09 Foundation Preparation.

Add the following after the first paragraph:

The foundation elevation is defined as the bottom of footings, for spread footing placement; the bottom of the pile cap, for construction of pile foundations; and the toe of the wall, for construction of retaining walls, except wingwalls at bridges.

Replace all material from any over-excavation below the designated footing elevation with compacted gravel at the direction of the CO.

When boulders or irregular, fractured, or seamed bedrock precludes excavation to the designated footing elevation without further loosening of previously solid material, the CO may order removal of such loose material and allow payment for gravel, that is required to restore foundation material to the designated elevation

208.10 Backfill.

Refer to SCR 204.11 and 204.13 for compaction and Finishing/Tolerance requirements.

208.13 Measurement.

Change the following:

(a) “18 inches” to “48 inches”

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.

Section 209. Structure Excavation and Backfill

209.07 Dewatering.

Delete entire subsection and add the following:

All discharge from dewatering must be filtered by a method approved by the CO to remove sediment from entering any waterway.

209.10 Backfill.

(a) General.

Add the following:

Replace any pipe that is distorted by more than 5 percent of nominal dimensions, or that is ruptured or broken.

Do not place or backfill pipe that meets any of the following conditions until the excavation and foundation have been approved in writing by the CO:

· Embankment height greater than 6 feet at subgrade centerline.

· Installation in a protected streamcourse.

· Round pipe with a diameter of 48 inches or greater.

· Pipe arches with a span of 50 inches or greater.

· Any box culvert of structure other than pipe culverts.

(b) Pipe culverts.

(1) Pipe culverts with compacted backfill.

Add the following:

On each side of the culvert, place an area of compacted material at least 4’ from edge of new culvert. Compact the backfill without damaging or displacing the culvert. Complete the backfilling of the trench with suitable material.

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. 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.

Method C. Ensure moisture content suitable for obtaining compaction. Compact each layer using compaction equipment designed for this purpose 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 2 3/4 tons.

Table 209-1 Sampling and Testing Requirements

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

251 - Riprap

251.03 General.

Add the following:

Place riprap under or adjacent to structures before placing prefabricated superstructure units or constructing superstructure falsework unless otherwise approved by the CO.

251.08 Measurement.

Payment for excavation and embankment required for placement of riprap is indirectly included in the pay item for riprap.

Section 301. Untreated Aggregate Courses

Title. Change the title to: Section 301 Aggregate Courses 301.01.

Add the following:

Work includes producing aggregate by pit-run, grid-rolling, screening, or crushing methods, or placing Government-furnished aggregate, as specified. Work may include additive mineral filler, or binder.

301.02.

Add the following:

301.03 General.

Do not place aggregate until the surface on which it will be placed has been approved in writing by the CO.

For pit run or grid-rolled material, furnish material smaller than the maximum size. No gradation other than maximum size will be required for pit-run or grid-rolled material. For grid rolling, use all suitable material that can be reduced to maximum size. After processing on the road, remove all oversize material from the road and dispose of it as directed by the CO.

Provide additives or binder, if required, at the proportions specified.

Develop and use Government furnished sources according to Section 105.

If the aggregate is produced and stockpiled before placement, handle and stockpiled according to Section 307. Establish stockpile sites at locations approved. Clear and grub stockpile sites, if required according to Section 201.

301.04 Mixing and Spreading.

Delete the first sentence of the first paragraph and add the following:

Ensure that aggregate and any required additives, water, mineral filler, and binder are mixed by the specified method except, if crushed aggregate products are being produced and mineral filler, binder, or additives are required, uniformly blend during crushing. Control additive proportions to 0.5 percent dry weight.

Stationary Plant Method. Mix the aggregate with other required materials in an approved mixer. Add water during the mixing operation in the amount necessary to provide the moisture content for compacting to the specified density. After mixing, transport the aggregate to the jobsite while it contains the proper moisture content, and place it on the roadbed or base course using an aggregate spreader.

Travel Plant Method. After placing the aggregate for each layer with an aggregate spreader or windrow-sizing device, uniformly mix it with other required materials using a traveling mixing plant. During mixing, add water to provide the necessary moisture content for compacting.

Road Mix Method. After placing the aggregate for each layer, mix it with other required materials at the required moisture content until the mixture is uniform throughout. Mix aggregate, water, and all other materials until a uniform distribution is obtained.

Spread the aggregate in a uniform layer, with no segregation of size, and to a loose depth that will provide the required compacted thickness.

During placement of aggregate over geotextile, place aggregate in a single lift to the full depth specified.

During all stages of construction, route and distribute hauling and leveling equipment over the width and length of each layer of material.

301.05 Compacting.

Delete the first and third paragraphs and add the following:

Compact the aggregate using one of the following methods as specified:

(a) Compaction A. Compact the aggregate by operating spreading and hauling equipment.

(b) Compaction B. Moisten or dry the aggregate to a uniform moisture content between 5 and 7 percent based on total dry weight of the mixture. Operate rollers and compact as specified in Subsection 204.11(a).

(c) Compaction C. Compact each layer of aggregate to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 99, method C or D.

(1) Compaction C-1. Compact each layer of aggregate to a density of at least 96 percent of the maximum density, as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box 7669, Missoula, MT 59807).

(d) Compaction D. Compact each layer of aggregate to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 180, method C or D.

(1) Compaction D-1. Compact each layer of aggregate to a density of at least 100 percent of the maximum density as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box 7669, Missoula, MT 59807).

(e) Compaction E. Operate rollers and compact as specified in Subsection 204.11(a).

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface. When a density requirement is specified, determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

301.06 Surface Tolerance.

Add the following:

Thickness and Width requirements:

The maximum variation from the compacted specified thickness is ½ inch. The compacted thickness is not consistently above or below the specified thickness and the average thickness of 4 random measurements for any ½ mile of road segment is within + ¼ inch of the specified thickness.

The maximum variation from the specified width will not exceed +12 inches at any point. The compacted width is not consistently above the specified width and the average of any four random measurements along any ½ mile of road segment is within +4 inches of the specified width.

301.08 (b) Plasticity Index.

Add the following to the first sentence: “and under 703.05(c)(3)”.

Table 301-1: Add the following tables

301.10 Payment

Delete the following:

adjusted according to Subsection 106.05

Table 301-1—Acceptance Sampling and Testing Requirements

Table 301-1—Acceptance Sampling and Testing Requirements

Table 301-1: Delete laboratory and field density requirements for base, subbase, and surfacing and replace with the following:

Compaction

Section 602. Culverts and Drains

602.03 General:

Add the following:

Ensure that the final installed alignment of all pipe allows no reverse grades, and does not permit horizontal and vertical alignments to vary from a straight line drawn from center of inlet to center of outlet by more than 2 percent of pipe center length or 1.0 feet, whichever is less.

Diversion ditches incidental to pay item 60305.

602.05 Laying Metal Pipe

Add the following:

Dry installation shall be required for installation of all pipes and consist of the following work:

Construction of cofferdams according to Special Contract Requirement Subsection 208.06, de-watering of the site, placement of the new pipe, backfill and compaction. Cofferdams shall be incidental to Pay Item 60305.

Section 625. Turf Establishment

625.03 General.

Delete the subsection and add the following:

Apply turf establishment to finished slopes and ditches between June 1 and September 15. Do not seed during windy weather or when the ground is excessively wet, frozen, snow covered, extremely dry, cloddy, hard pan, or is otherwise untellable.

Application Methods for Seed, Fertilizer, & Limestone

Seed Mixtures shall consist of the following:

35 % Canada Wild Rye (Elymus Canadensis) 20 % sideoats gramna (bouteloua curtipendula) 10% annual ryegrass (Lolium Multiflorum) 10% little bluestem (Schizachyrium Scoparium) 10% indiangrass (sorgastrum Nutuns) 10% big bluestem (Andropogon gerardi) 4% purple prarie clover (Dalea Purpurea) 1% blackeyed susan (Rudbeckia hirta)

Seeding rates = 10 pounds per acre.

625.05 Watering.

Delete the subsection and add the following:

Moisten seeding areas before seeding.

625.06 Fertilizing.

Add the following to subsection (a):

Chemical analysis shall be as listed below and shall be applied at 50 pounds per acre:

Nitrogen, not less than 10% Phosphoric acid, not less than 10% Potash, not less than 10%

Section 629. Rolled Erosion Control Products

629.05 Erosion Control Blanket

The erosion control blanket shall be type ENS2 or equivalent that consists of 100% wheat straw mechanically bound and covered on both sides by netting. The straw shall be homogeneously blended and evenly distributed throughout the blanket. The netting shall be twisted jute with mesh openings of approximately ½ inch by 1 inch. The blanket shall be sewn on approximately 2 inch centers with twisted jute thread. Every component of the blanket shall be 100% biodegradable.

Section 703. Aggregate

703.05 Subbase, Base, & Surface Course Aggregate

Replace (1) under 703.05(a) with the following:

(1) Los Angeles abrasion, AASHTO T 96 40% max.

Add the following to 703.05(b):

(3) Plastic limit, AASHTO T 90 Nonplastic

Replace (1) and add (3) under 703.05(c) with the following:

(1) Gradation Table 703-3

(3) Plasticity index, AASHTO T 90:

Replace Table 703-3 with the following:

Table 703-3. Gradation TV ranges for surface courses.

% by Mass Passing Designated Sieve (AASHTO T 27 and T 11) Grading Designation

Note: Allowable deviations (±) from TV are shown in parentheses. If the plasticity index (PI) is greater than 0, the TV range for the No. 200 sieve size is 6-12 (4).

703.05 Subbase, Base, & Surface Course Aggregate

Delete (1) through (4) under 703.05(a)

Add the following to Tables 703-2:

% by Weight Passing Designated Sieve (AASHTO T11 and T-27) Grading Designation

4 in.

3 in.

2 in.

No. 4

15-45

15-45

15-45

Note: For Grading M, O, and Q the allowable deviations (+/-) from the TV are to the broad band limits.

Add the following to Tables 703-2:

% by Weight Passing Designated Sieve (AASHTO T-11 and T-27) Grading Designation

1 in.

¾ in.

70-98

No. 4

No. 200

Note: For Grading Y and Z the allowable deviations (+/-) from the TV are to the broad band limits.

703.10(e). Delete and replace with the following:

Flakiness Index, FLH T 508 30% max.

703.10. Add the following:

(i) Adherent coating on the aggregate, FLH T 512 0.5% max.

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