Specs.pdf

Standard Specifications for Construction of Roads & Bridges on Federal Highway Projects

Specification List

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

Project Name FR 1700

Date Prepared 03/16/09

Road Number FR 1700

Termini….. 0.22 R Const. Recon . Decom. .

Spec. No. Title Latest Revised Edition

101 thru 109 General Requirements X FP-03

151 Mobilization X FP-03

155 Schedules for Construction Contracts X FP-03

156 Public Traffic X FP-03

157 Soil Erosion Control X FP-03

201 Clearing & Grubbing X FP-03

203 Removal of Structures & Obstructions FP-03

204 Excavation & Embankment X FP-03

208 Structural Exc. & Backfill for Major Structures

X FP-03

251 Riprap X FP-03

301 Untreated Aggregate Courses X FP-03

602 Culverts & Drains X FP-03

603 Structural Plate Structures X FP-03

625 Turf Establishment X FP-03

633 Permanent Traffic Control X FP-03

635 Temporary Traffic Control X FP-03

703 Aggregate

SUPPLEMENTAL SPECIFICATION LIST

FR 1700

Section 101 - Terms, Format, and Definitions

Section 102 - Bid, Award, and Execution of Contract

Section 103 - Scope of Work

Section 105 - Control of Materials

Section 106 - Acceptance of Work

Section 107 - Legal Relations and Responsibility to the Public

Section 108 - Prosecution and Progress

Section 109 - Measurement and Payment

Section 155 - Schedules for Construction Contracts

Section 156 - Public Traffic

Section 157 - Soil Erosion Control

Section 201 - Clearing and Grubbing

Section 203 - Removal of Structures and Obstructions

Section 204 - Excavation and Embankment

Section 208 - Structural Excavation and Backfill For Selected Major Structures

Section 251 - Riprap

Section 301 - Untreated Aggregate Courses

Section 602 - Culverts and Drains

Section 603 - Structural Plate Structures

Section 625 - Turf Establishment

Section 635 - Temporary Traffic Control

Section 703 - Aggregate

SUPPLEMENTAL SPECIFICATION

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.

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). For Timber Sales, delete all references in FP-03 to Federal Acquisition Regulations (FAR).

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.

http://www.nist.gov/�

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.

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.

R ig ht of

W ay

R oa ds id e R oa ds id e

C le ar in g W id th

R oa dw ay

C le ar in g Li m it

X Y

G ro un d

Li ne

Tr av el ed

W ay C L

B er m S ur fa ce C ou rs e B as e

C ou rs e

Fi ll

S lo pe

B ac k S lo pe

D ra in ag e D itc h

G ro un d

Li ne

S ub gr ad e

R oa d B ed

S ha pe s an d di m en si on s w ill va ry to fi t l oc al c on di tio ns

S ee d ra w in gs fo r t yp ic al s ec tio ns

X a nd Y d en ot e cl ea rin g ou ts id e of ro ad w ay

N ot e:

Right - of - Way Line

Right - of - Way Line

Clearing Limit

Shoulder

Shoulder

Section 102 – BID, AWARD, AND EXECUTION OF CONTRACT

102 Delete

Delete Section 102 in its entirety.

Section 103 – SCOPE OF WORK

103 Delete

Delete all but subsection 103.01 Intent of Contract.

Section 105- CONTROL OF MATERIAL

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.

Government-provided optional sources for this project are identified as follows:

Material is available for use as ( ) as needed for the project from

Aggregate Surface Course material from

There is no charge for material taken from these pits for use on this project.

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

106.05 Statistical Evaluation of Work and Determination of Pay Factor (Value of Work).

Delete subsection 106.05 (Do not delete for paving projects)

106.07 Partial and Final Acceptance.

Delete subsection 106.07

Section 107- LEGAL RELATIONS AND RESPONSIBILITY TO THE PUBLIC

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

Section 108- PROSECUTION AND PROGRESS

Delete Section 108 in its entirety.

Section 109- MEASUREMENT AND PAYMENT

109.02 Measurement Terms and Definitions

Add: One of the following methods of measurement for determining final payment is

DESIGNATED on the SCHEDULE OF ITEMS for each pay item:

(a) Designated Quantities (DQ). These quantities denote the final number or units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units SHOWN in the SCHEDULE OF ITEMS may be authorized under any of the following conditions:

(1) As a result of changes in the work authorized by the Contracting

Officer.

(2) As a result of the Contracting Officer determining that errors exist in the original design that cause a pay item quantity to change by 15 percent or more.

(3) As a result of the contractor submitting to the Contracting Officer a written request showing evidence of errors in the original design that cause a pay item quantity to change by 15 percent or more.

The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designated quantity is believed to be in error.

(b) Staked Quantities (SQ). These quantities are determined from staked measurements prior to construction.

(c) Actual Quantities (AQ). These quantities are determined from measurements of completed work.

(d) Vehicle Quantities (VQ). These quantities are measured or weighed in hauling vehicles.

(e) Lump Sum Quantities (LSQ). These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They will not be measured.

Quantity Measurements. The Forest Service shall make all measurements for computation of quantities for all work items except those specified for payment by Design Quantity (DQ). The Engineer shall compute the quantities for periodic payments and for final payment.

The Contractor shall certify in writing at the completion of contract work, that the quality of construction conforms to the drawings, specifications, and requirements of the Contract.

109 Deletions Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

Section 155- SCHEDULES FOR CONSTRUCTION CONTRACTS

Delete Section 155 in its entirety.

Section 156- PUBLIC TRAFFIC

156.03 Accommodating traffic During Work.

Delete the following from the last paragraph:

according to Subsection 106.07(b)

Unless otherwise SHOWN ON THE DRAWINGS or described in the SUPPLEMENTAL SPECIFICATIONS, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic.

Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until a plan for the satisfactory handling of traffic has been approved. Specific requirements for temporary closures, detours, part-width construction, and access to adjacent or intersecting facilities will be SHOWN ON THE DRAWINGS or described in the SUPPLEMENTAL SPECIFICATIONS. Post construction signs and traffic control devices in conformance with the “Manual on Uniform Traffic Control Devices” (MUTCD). Do not proceed with work on the project until all required signs are in place and approved.

Before shutting down any operations, take all necessary precautions to prevent damage to the project, such as temporary detours, approaches, crossings, or intersections; and provide for normal drainage and minimization of erosion. Leave all travelways in a condition suitable for traffic.

The government may permit use of portions of the project during periods when operations have shut down. All maintenance attributed to permitted use during periods of work suspension will be provided by the Government, except for maintenance needed through the fault or negligence of the contractor. The Contractor shall be responsible for any maintenance not attributed to use, or that is necessary during suspensions through the fault or negligence of the Contractor.

When SHOWN ON THE DRAWINGS or described in the SUPPLEMENTAL SPECIFICATIONS, road segments may be closed to all traffic during the period(s) when construction is in progress. If any of the listed roads are to be closed during construction operations, give at least 14 days advance notice.

Unless otherwise provided, when construction activity is in progress and closure has not been provided for herin, delays may not exceed 30 minutes, in order to reasonably accommodate traffic.

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.

156.06 Limitations on Construction Operations.

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 SHOWN ON THE DRAWINGS, designated in the Road Order, or described in the SUPPLEMENTAL SPECIFICATIONS, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

156.08 Traffic and Safety Supervisor.

Delete this section in its entirety.

Section 157. - SOIL EROSION CONTROL

157.03 General

(a) Add 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.

157.16 Delete (a), (b), & (c).

Replace with:

(a) 50 percent of the contract quantity at the unit bid price will be paid upon installation.

(b) Payment of the remaining contract quantity at the unit bid price will be paid at completion and acceptance of the contract.

Section 201-CLEARING AND GRUBBING

201.01 Delete entire subsection and replace with the following:

This work shall consist of clearing, grubbing, trimming and disposing of or treatment of timber, construction slash, and debris. This work shall also include preservation of vegetation and objects DESIGNATED to remain from injury or defacement.

201.02 Delete Tree wound dressing material reference.

201.03 Delete the last sentence.

201.04 Clearing.

Delete (a), (b), (c), (d)

Replace with the following:

(a) Trees may be felled perpendicular and away from the road centerline to facilitate slash treatment operations whenever ground conditions, tree lean and shape of clearing permit. Controlled felling shall be used to prevent damage to trees outside of the clearing limits. Controlled felling shall be used that will ensure the direction of fall when necessary to prevent damage to property, structures, trees DESIGNATED to remain, or traffic.

(b) Fire-dangerous dead trees or unstable live trees, DESIGNATED by the Engineer within 100 feet slope distance of the centerline of roads shall be cut of not more than 12 inches above the uphill ground line and treated in accordance with Subsections 201.04 (a).

(c) When Branch Trimming is used as a pay item, the removal of limbs which hang over the roadway shall be limited to those within 20 feet vertical clearance above and to the edge of the existing clearing on each side of the road shoulder.

Branches removed shall be scattered outside of the existing clearing unless otherwise directed. Branches shall not be bunched during scattering operations.

Limbing shall be done by means of pruning saws, power saws, nippers, bow saws, or cross-cuts. Limbs shall be pruned as close as possible to the tree trunks.

Disposal shall include removal of debris from the roadway ditches, to provide a roadside strip that will be asthetically pleasing.

(d) Felling and Bucking. Felling shall be done to minimize damage to merchantable timber and damage to remaining trees outside of clearing limits. Felling shall be done with saws or shears unless shown otherwise in the SUPPLEMENTAL SPECIFICATIONS. Felling may be accomplished by pushing over with Construction or Logging equipment.

201.05 Grubbing.

Delete (a), (b), (c), (d)

Replace with the following:

(a) Undisturbed stumps outside the roadway or in embankment areas, provided they do not extend more than 12 inches above the original ground (measured from the uphill side) nor closer than 2 feet to the finished subgrade or 1 foot to any slope surface or as otherwise SHOW ON THE DRAWINGS and they do not interfere with the placement or compaction of embankments.

(b) Grubbing of pits, channel changes, rock sections, and ditches, below the depth of the proposed excavation.

(c) All roots over 3 inches in diameter within the roadbed area shall be grubbed to a minimum depth of 6 inches below subgrade. Roots over 3 inches in diameter protruding from the excavated slope shall be cut flush with the excavated slope surface.

201.06 Disposal.

Delete the first sentence and substitute the following:

All merchantable timber within the clearing limits on either private or Government land remains the property of the landowners.

Add the following:

Utilization and Removal of Timber

Trees that equal or exceed the diameters and minimum lengths listed in the SUPPLEMENTAL SPECIFICATIONS and contain one minimum piece shall be removed or disposed of by one of the following methods as shown in the SCHEDULE

OF ITEMS.

(a) Logs meeting utilization standards shall be limbed and decked at locations SHOWN ON THE DRAWINGS or at locations approved by the Engineer.

Decking shall be done in such a manner that logs are piled parallel one to the other, can reasonably be removed by standard log loading equipment, will not damage standing trees, and will not roll. Decks shall be free of brush and soil.

(b) Disposal as Unmerchantable Timber. Timber on this project that is not considered merchantable shall be disposed of in accordance with Subsection

201.06 for the treatment methods SHOWN ON THE DRAWINGS and in the

SCHEDULE OF ITEMS.

(c) Slash Treatment. Treatment of construction slash larger than 3 inches in diameter and 3 feet in length shall be accomplished by one or more of the following methods as shown in the SCHEDULE OF ITEMS:

(1) Scattering

(2) Stump Dumps

(a) All Methods. No construction slash shall be deposited in lakes, meadows, streams, or streambeds. Construction slash that interferes with drainage structures shall be removed immediately.

Trees adjacent to the clearing limits damaged beyond recovery shall be felled and disposed of in accordance with Subsection

201.06 or treated as construction slash.

(b) Specific Methods.

(1) Scattering. Unless specified otherwise, the contractor shall meet the following requirements. Construction slash shall be scattered outside the clearing limits without damaging trees outside the cleared area. Stumps shall be severed from all trees, and set in an upright position with their root masses resting on the ground. Logs shall be placed away from trees, positioned so that they will not roll, not placed on top of one another or left leaning on other trees. Construction slash shall be limbed to reduce slash concentrations.

(2) Stump Dumps. Stumps, roots, rocks, topsoil and other grubbing debris shall be concentrated in stump dump areas. Stump dump areas shall be located by the Engineer, be a maximum of 300 feet apart along the road centerline, and generally be located in natural depressions or tucked away behind denser vegetation or ground rises.

Stump dumps will vary in size depending on each site, but shall not be closer than 5 feet outside of the clearing limits. Stump dump material shall be matted down as much as possible and shall not obstruct natural drainages.

In areas of light clearing where trees are widely separated, the stumps may be individually scattered in an upright position in lieu of the specified dumps, with approval of the project engineer.

Section 203 – REMOVAL OF STRUCTURES AND OBSTRUCTIONS

203.01 Work.

Delete and replace with the following:

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

203.05 Disposing of Material.

(a) Remove from project. Delete second and third sentence. Add: one culvert at sta.

1+69 and the culvert at sta. 7+20 shall be removed from the project and disposed of off Government land.

Add the following disposal method:

(f) Scattering. Scatter construction slash outside the clearing limits without damaging trees. Limb all logs. Stumps shall be severed from all trees, and set in an upright position with their root masses resting on the ground. Place logs and stumps away from trees, positioned so that they will not roll, and are not on top of one another. Limb and scatter other construction slash to a maximum height of 3-feet..

Section 204-EXCAVATION AND EMBANKMENT

204.05 Conserved Topsoil.

Delete the subsection.

204.09 Preparing Foundation for Embankment Construction.

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

(a) Embankment less than 4 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.

Add the following:

When an embankment is to be placed across swampy ground and removal of unsuitable material or subgrade treatment is not required, the lower part of the embankment shall be constructed in a single layer to the minimum depth necessary to support construction equipment.

(c) Individual rock fragments and boulders.

(5) Such rocks and boulders shall be at least 6 inches below subgrade.

204.11 Compaction.

All embankments shall be placed and compacted by one or more of the following methods as SHOWN ON THE DRAWINGS and listed in the SCHEDULE OF ITEMS.

Add the following compaction method:

(d) Layer Placement Method (Hauling and Spreading Equipment). Place material by end dumping to the minimum depth needed for operation of spreading equipment. Level and smooth each embankment layer before placing the next 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 roocks 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 Method (Roller Compaction). Place material by end dumping to the minimum depth needed for operation of spreading equipment. Adjust the moisture content of the material 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 when a sheepsfoot roller is used, the roller “walks out” of the layer. Make at least three complete passes.

204.13 Sloping, Shaping, and Finishing.

(a) Sloping.

Slope rounding is not required on tolerance class D though M roads.

(c) Shaping.

When excavation is measured on a station basis, excavating, placing of embankment, and shaping and compacting the roadway template shall include only those areas where cuts and fills are generally less than five feet in depth as measured from the finished shoulder grade to the top of the adjacent cut or toe of fill. These areas of station grading shall consist of light dozing or grading of such character that the excavation from backslopes, ditches, and roadbed shall be used in shaping the subgrade, shoulders, and adjacent fills.

When excavation is measured by the station (station grading) as designated in the SCHEDULE OF ITEMS, turnouts, side entrances, approaches, radii and T-turnarounds shall not be measured separately, but will be included as part of the station measurement along the construction centerline.

This work shall include all necessary scarifying, dozing, disking, moving, shaping, and compacting to develop the cross-sections SHOWN ON THE DRAWINGS. Loading and hauling will not be included or required in the work.

Compaction of the subgrade shall be accomplished with the construction and hauling equipment.

Delete section (d) and add the following:

(d) Finishing. For surfaced roads, remove all material larger than 6 inches from the top 6 inches of the roadbed. For all roads, finish the roadbed to be smooth and 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.

For unsurfaced roads, use one of the following methods to finish the roadbed

(1) Method A. Remove all material larger than 6 inches from the top 6 inches of the roadbed and replace with suitable material.

(2) Method B. Use a vibratory grid roller or approved equal with a minimum weight of 10 tons. Roll at least 5 full-width passes or until visible displacement ceases.

(3) Method C. For roads designated as Construction Tolerance Class K, L, or M, finish the roadbed by spreading the excavation. Eliminate rock berms.

Add Table 204-2—Construction Tolerances:

Table 204-2 Construction tolerances.

Tolerance Class

A

(a)

B C D E F G H I J K L M Roadbed width (ft) +0.5 +0.5 +1.0 +1.0 +1.0 +1.0 +1.5 +1.0 +2.0 +2.0 +2.0 +2.0 +2.0

Subgrade elevation

(ft)

+0.1 +0.2 +0.2 +0.5 +0.5 +1.0 +1.0 +1.5 +2.0 +3.0 +2.0 +3.0 (c)

Centerline alignment (ft)

+0.2 +0.2 +0.5 +0.5 +1.0 +1.0 `+1.5 +1.5 +2.0 +3.0 +3.0 +5.0 (c)

Slopes, excavation, and embankment (% slope(b)

+3 +5 +5 +5 +5 +5 +10 +10 +10 +10 +20 +20 +20

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.

204.16

(b) Unclassified borrow, select borrow, and select topping.

When borrow is designated as a pay item by the cubic yard in the SCHEDULE OF ITEMS, measurement will be in the final position.

Section 208. –STRUCTURE EXCAVATION AND BACKFILL FOR SELECTED

MAJOR STRUCTURES

Construction Requirements

208.04 General.

Delete the following: Excavate trenches or foundation pits to a width and length that allows room for work.

And replace with the following:

Excavate trenches for culverts at least as wide as one diameter plus one diameter or span of the structure on each side or 12 feet, whichever is less, with a minimum of two feet on each side.

208.10 Backfill

Add after the second sentence:

On each side of the pipe there shall be an area of compacted material at least as wide as one diameter or span of the structure, with a minimum of two feet or a maximum of twelve feet.

Measurement

208.13 Delete (a), Replace with:

(a) Material excavated outside vertical planes located one pipe diameter or span or a maximum of 12 feet outside and parallel to the limits of the footings or foundations.

Section 251 - RIPRAP

251.04 Add: Place geotextile under all placed riprap.

Section 301- UNTREATED AGGREGATE COURSES

301 Title Change.

Change the title to:

Section 301- AGGREGATE COURSES

301.01 Work.

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

301.03 General.

Request approval in writing of the roadbed before placing aggregate.

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 320. Establish stockpile sites at locations approved. Clear and grub stockpile sites 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.

The aggregate shall be spread in a uniform layer, with no segregation of size, and to a loose depth that shall have the required thickness when compacted.

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.

When placing aggregate over geotextile, place aggregate in a single lift to the full depth specified.

Route and distribute hauling and leveling equipment over the width and length of each layer.

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 over the full width of each layer of the aggregate.

(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.

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

(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.

Thickness and Width requirements:

The thickness of the compacted nominal aggregate shall not vary more than ½ inch for aggregates with a maximum particle size of 1 inch or less, nor more than 1 inch for aggregates with a nominal maximum particle size greater than 1 inch from the thickness SHOWN ON THE DRAWINGS. The compacted thickness shall not be consistently above or below the specified thickness.

301.09 Measurement.

Delete:

Measure aggregate by the cubic yard in the hauling vehicle and substitute with the following:

Measure aggregate by cubic yard compacted in place when payment is by contract quantities.

Payment

When materials are produced and furnished by the Forest Service, the note “Government furnished materials” will be added to the description of the pay item.

Section 602- CULVERTS AND DRAINS

Description

602.01 Delete 602.01 in its entirety and substitute with the following:

602.01 This work shall consist of furnishing and installing, or installing only, metal pipe and Corrugated High Density Polyethylene (HDPE) with smooth interior and pipe appurtenances, including all bedding and backfilling required to complete the work. The term metal refers to aluminum and steel.

Material

602.02 Add: Corrugated High Density Polyethylene Drainage Pipe shall meet the requirements of AASHTO M252, ASTM F405, and ASTM 667 and be non – perforated. Advance Drainage systems N – 12 pipe meets these requirements.

602.03 General.

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 foot, whichever is less.

Backfill material shall be readily compactible material free of frozen lumps, chunks of highly plastic clay (Plasticity Index greater than 10), or other objectional material. Rocks larger than 3 inches in greatest dimension shall not be used within 1 foot of the pipe.

Payment

When materials are produced and furnished by the Forest Service, the note “Government furnished materials” will be added to the description of the pay item.

Section 603 – STRUCTURAL PLATE STRUCTURES

Construction Requirements

603.03 General Delete sentence and substitute:

Excavate and backfill according to Section 208 and 209.

Add the following:

Do not place or backfill structure until the CO has approved in writing the excavation and foundation. Submit four sets of shop drawings of the long-span structure to the CO at least 21 days before planned construction. Accompany shop drawings with all calculations used to determine the size, shape, location, and spacing of stiffening ribs, thrust beams, or other special structural features.

603.04 Erecting. Ensure all bolts are torqued to manufacturer’s specifications before beginning to place backfill material.

603.05 Acceptance. Delete the third paragraph. Substitute with, Excavation and backfill will be evaluated under Sections 208 and 209.

Section 625- TURF ESTABLISHMENT

Description

625.01 Delete: watering

625.03 General.

Delete the first subsection and add the following:

Apply turf establishment to finished slopes and ditches between June 1 and October 1unless approved by the CO. Do not seed during windy weather or when the ground is excessively wet, frozen, snow covered, extremely dry, cloddy, hard pan, or is otherwise untillable.

625.05 Watering. Delete 625.05 Watering and its description in its entirety.

625.06 Fertilizing. (a) Dry method.

The fertilizer shall be 10-10-10, and shall be applied at the rate of 200 pounds per Acre.

625.07 Seeding. (a) Dry method.

Delete the subsection and add the following:

Seed Mixture

Species Pounds per Acre Percent

Perennial Rye 7.5 25

Ladino Clover 10.5 35

Creeping Red Fescue 12.0 40

The seed mixture shall be applied at the rate of 30 Pounds per Acre.

625.08 Mulch. (a) Dry Method

Delete the subsection and add the following:

Mulch shall be applied at the rate of 50 Bales per Acre. Bales shall be a standard size with an average length of 36-inches and an average weight of 40-50 pounds as determined by the engineer.

Section 635. – TEMPORARY TRAFFIC CONTROL

635.03 General.

(i) Delete.

635.27. Add

Payment will be considered incidental to other pay items in this contract.

Section 703. – AGGREGATE

703.05 Add: Subbase, Base, and Surface Course Aggregate Table 703-2A

Percent Passing Sieve (AASHTO T11 and T27)

Grading MI 22A

1 inch 100 ¾ inch 90 – 100 3/8 inch 65 – 85 No. 8 30 – 50 No. 200 4 – 8

This gradation is the Michigan Department of State Highways & Transportation – Designation 22A

703.05 Add: Foundation Coarse Aggregate Table 703-2B

Percent Passing

Sieve ( AASHTO T 11 and T 27)

Grading MI 6A 11/2 Inch 100

1 Inch 95 – 100 ¾ Inch ½ Inch 30 - 60 3/8 Inch # 4 0 - 4

This gradation is the Michigan Department of State Highways & Transportation- Designation 6A