J9D - Uwharrie Hunt Camp SOW.docx

Statement of Work Uwharrie Hunt Camp Parking lot and Uwharrie National Forest January 12, 2024

Project Description: The objective of this project is to enhance the functionality and safety of the existing parking lot and road infrastructure, addressing issues such as grading, drainage and erosion. This includes grading the parking lot, replacing the existing culvert, paving a section of the road and parking lot, reshaping the existing ditch along the road and mitigating erosion problems due to improper drainage.

Scope of Work:

This project involves:

1. Placing a layer of surface gravel and grading the parking lot.

2. Removal and replacement of an existing culverts at the parking lot.

3. Paving a section of the road and the parking lot to address the erosion issue.

4. Reshaping the existing ditch along moccasin creek road.

1. Parking Lot Grading:

· Evaluate the current condition of the parking lot surface, with specific attention to areas prone to erosion.

· Place a layer of surface gravel and grade the parking lot to ensure proper water drainage towards the existing culvert.

2. Culvert Replacement:

· Identify the location of the old culvert in need of replacement.

· Remove and dispose of the existing culvert.

· Install a new culvert that meets current standards and facilitates improved drainage to address erosion concerns.

· Place Riprap at the culvert outlet to prevent erosion and stabilize the surrounding soil.

3. Ditch Reshaping:

· Survey and analyze the existing ditch along the road, focusing on improving water flow to reduce erosion.

· Reshape the ditch to enhance drainage and erosion control.

· Reinforce the ditch with suitable materials to prevent degradation.

4. **Option*** Road and Parking lot paving:

· Conduct a thorough assessment of the road and parking lot areas designated for paving.

· Remove any deteriorated asphalt or surface material.

· Apply a suitable base layer to ensure stability and proper load-bearing capacity.

· Apply a top layer of asphalt to provide a smooth and durable surface.

· Apply all asphalt pavement in accordance to FP-14 and NCDOT paving standards.

· Weather Limitations. Place asphalt concrete mix on a dry, unfrozen surface when the air temperature in the shade is above 35 °F (1.7 °C) and rising. For HMA, conform to Table 401-2. For 2” lifts, minimum lay down temperatures should be as follows:

Contractor Responsibilities:

1. The contractor shall supply all material, labor, tools, equipment, cranes, vehicles, supplies, incidentals, supervision, and safety measures to complete the project.

2. The contractor shall be responsible to verify the necessary quantities of materials to be supplied and volumes of materials required to execute project requirements as described in the plans.

3. Hours of work shall be any time after sunrise and before sunset any day of the week. Potable water, electrical power, and toilet facilities are not available at the project sites.

4. The project shall include all surveying, site prep, asphalt base and any other identified components required to provide a complete and finished project.

5. Minimize disturbance to surrounding area and restore any areas affected by the work and remove trash daily.

6. The Contractor shall obtain the required permits, surveys, and comply with all laws, ordinances, codes, rules, and regulations bearing on the conduct of the work. No time extensions shall be granted, or financial consideration given to the contractor for time or monies lost due to violations of any such ordinance, code, law, or regulations that may occur.

7. All work shall be done in accordance with FP-14, product manufacturer specifications, plans, OSHA and this document.

Terms, Format, and Definitions

These specifications are generally written in the imperative mood. In sentences using the imperative mood, the subject, “the Contractor,” is implied. Also implied in this language are “shall,” “shall be,” or similar words or phrases. In material specifications, the subject may also be the supplier, fabricator, or manufacturer supplying material, products, or equipment for use on the project.

Wherever “directed,” “required,” “prescribed,” or other similar words are used, the “direction,” “requirement,” or “order” of the Contracting Officer is intended. Similarly, wherever “approved,” “acceptable,” “suitable,” “satisfactory,” or similar words are used, the words mean “approved by,” “acceptable to,” or “satisfactory to” the Contracting Officer.

The word “will” generally pertain to decisions or actions of the Contracting Officer.

When there is no pay item in the Schedule of Items, no direct payment is made. Activities not explicitly described are considered incidental to the task.

The first four digits of the pay item number in the Schedule of Items correlate with the specification which is a section or subjection of the FP-14 with Forest Service Supplemental Specifications written in where it supersedes the FP-14. The digits following the first four digits identify individual line items.

Whenever these abbreviations are used in the specifications, they represent the following:

(a) Acronyms AA – Aluminum Association AASHTO – American Association of State Highway and Transportation Officials ADA – Americans with Disabilities Act AFPA – American Forest and Paper Association AGC – Associated General Contractors of America ANSI – American National Standards Institute ASTM – American Society for Testing Materials CFR – Code of Federal Regulations 5 CO – Contracting Officer and all representatives COR – Contracting Officer’s Representative ER – Engineering Representative FHWA – Federal Highway Administration FICA – Federal Insurance Contributions Act FLH – Federal Lands Highways FSS – Federal Specifications and Standards FUTA – Federal Unemployment Tax Act GSA – General Services Administration ITE – Institute of Transportation Engineers LS – Lump Sum MSHA – Mine Safety and Health Administration MUTCD – Manual on Uniform Traffic Control Devices (for Streets and Highways) NESC – National Electrical Safety Code NFPA – National Forest Products Association NIST – National Institute of Standards and Technology OSHA – Occupation Safety and Health Administration PVC – Polyvinyl Chloride PW – Public Works SAE – Society of Automotive Engineers SF – Standard Form SI – International System of Units STA – Station TS – Timber Sale 6 UL – Underwriter’s Laboratory U.S. – United States USC – United States Code USGS – United States Geological Survey USPS – United States Postal System

(b) Symbols d — daytime h — hour time min — minute time s — second time mp — mile post location ppm — parts per million quantity º — degree plane angle ‘— minute plane angle “— second plane angle

(c) Slope notation (vertical: horizontal). For slopes flatter the 1V:1H, express the slope as the ratio of one unit vertical to a number of units horizontal. For slopes steeper than 1V:1H, express the slope as the ratio of a number of units vertical to one unit horizontal.

The following definitions apply to this contract:

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.

Award – The written acceptance of a bid by the CO.

Backfill – Material used to replace or the act of replacing material removed during construction. Material placed or the act of placing material adjacent to structures.

Place excavated material in a manner that will not impede water flow or potentially increase sedimentation of waters. Shape inslopes and backslopes to promote revegetation and soil stabilization. Slopes of 1.5:1 or flatter are preferred if terrain permits. Compact fill material to reduce entry of water, increase load carrying capacity and minimize settling. Deposit excess material in stable locations away from streams, lakes, wetlands, and seasonal ponds. Shape and stabilize borrow pits and excess material. Limit the area excavated to that which can be properly shaped and compacted within a day, with provisions for storm drainage and sedimentation control.

Base – The layer or layers of material placed on a subbase or subgrade to support a surface course.

Bidder – Any individual or legal entity submitting a bid.

Bid Guarantee – A form of security assuring that the bidder will not withdraw a bid within the period specified for acceptance and will execute a written contract and furnish required bonds.

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

Commercial Certification – See subsection 106.03.

Construction Limits – The limits on each side of the project that establish the area disturbed by construction operations and beyond which no disturbance is permitted. Typically, the construction limits are the same as the clearing limits, except when additional clearing is required.

Contract – The written agreement between the Government and the Contractor setting forth the obligations of the parties for the performance of and payment for the prescribed work.

Contracting Officer (CO) – An official of the Government with the authority to enter into, administer, and terminate contracts and make related determinations and findings. The term includes certain authorized representatives of the CO acting within the limits of their authority as delegated by the CO.

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.”

Contract Time – The specified time allowed for completion of all contract work.

Cross Section – A vertical section of the ground or structure at right angles to the centerline or baseline of the roadway or other work.

Danger Tree – Any tree or its parts that will fail because of a defect and cause injury to people.

Forest Service – An agency of the United States Department of Agriculture managing public lands in national forests and grasslands.

Government – The Government of the United States of America.

Layer – See “Lift.”

Lift – Defined as follows:

When placing and compacting soils and aggregates, a lift is any single continuous layer of material that receives the same compaction effort during a single work operation.

When installing culvert pipe less than or equal to 48 inches in diameter, the backfill material placed on both sides of the pipe is considered to be contained in the same lift when the material is placed to the same elevation on both sides of the culvert, the compaction effort applied to one side of the culvert is the same as that applied to the other, and the compaction effort is applied to both sides of the pipe in a continuous operation. Unless the culvert is a ditch relief and when installing culvert pipe less than or equal to 48 inches in diameter, the backfill material placed on both sides of the pipe is considered to be contained in a slope determined lift when the material is placed to different elevations the compaction effort applied to the road side of the culvert is the same as that applied to the slope slide, and the compaction effort is applied to both sides of the pipe in a continuous operation with variances applied due to depth changes.

Material – Any substance specified or necessary to satisfactorily complete the contract work.

Maximum Particle Size – The smallest sieve opening through which all particles in the material will pass. Measurement – The process of identifying the dimensions, quantity, or capacity of an item. See section 109 for measurement methods, terms, and definitions.

Pavement Structure – The combination of subbase, base, geotextiles, and surface courses placed on a subgrade to support and distribute the traffic load to the roadbed.

Pay Item – A specific item of work for which a unit and price is provided in the contract.

Payment Bond – The security executed by the Contractor and surety or sureties and furnished to the Government to ensure payments as required by law to all persons supplying labor or material according to the contract.

Performance Bond – The security executed by the Contractor and surety, or sureties furnished to the Government to guarantee completion of the contract work.

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

Plans – The contract plans furnished by the Government showing the location, type, dimensions, and details of the work.

Production Certificate – See subsection 106.03 Professional Engineer – Engineers who hold valid State licenses permitting them to offer engineering services directly to the public, who are experienced in the work for which they are responsible, who take legal responsibility for their engineering designs, and who are bound by a code of ethics to protect the public health.

Profile Grade – The trace of vertical plane intersecting a particular surface of the proposed road construction located as shown on the plans, usually along the longitudinal centerline of the roadbed. Profile grade means either elevation of gradient or trace according to the context.

Project – The specific section of the highway road or other property on which construction is to be performed under the contract.

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.

For all culverts, ensure that the bottom is either surface-flush and allows for unrestricted hydrological flows, and is safe, sound, and feasible for the long-term operability and function of the culvert; Or that riprap or other materials designated and approved by the CO are placed in a way that is flush with the bottom of the pipe to allow for the unrestricted passage of wildlife through the entirety of the culvert. Install drainage structures as construction proceeds. Install culverts at grades 2% more than the ditch grade and angled at least 30 degrees from perpendicular to the flow of water to improve inlet efficiency. Provide adequate drainage for road grades during construction to minimize erosion of unconsolidated materials. Retain out slope drainage and minimize berms on the outside edge during construction operations, except those intentionally constructed for protection of road grade fills. Provide temporary cross-drainage structures (such as water bars) during construction where needed. Install siltation barriers, such as silt fences and straw bales, during construction in sites where roads and water have close contact for long periods.

Right-of-Way – Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Road – See figure 101.1 Illustration of road structure terms.

Roadbed – The graded portion of a road prepared as a foundation for the subsequent layers of structure and shoulders.

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.

Roadside – All area within the right-of-way excluding the traveled way and shoulders.

Roadway – 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.

Roadway Prism – The volume defined by the area between the original terrain cross section and the final design cross section multiplied by the horizontal distance along the centerline of the roadway.

Avoid creating a corridor of debris. Do not leave jackstrawed or overturned stumps in immediate foreground. Reduce height of dozed clearing debris during road construction.

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.

Shoulder – The portion of the roadway contiguous to the traveled way for accommodation of stopped vehicles, for emergency use, and for lateral support of the pavement structure.

Specifications – The written requirements for performing work.

Standard Forms – Numbered forms issued by the General Services Administration for use as contract documents.

Standard Plans – Detailed plans approved for repetitive use and included as part of the plans.

Station – (1) A measure of distance used for roads and other linear features. A station is equal to 100 feet. (2) A precise location along a survey line.

Structures – Bridges, culverts, catch basins, drop inlets, retaining walls, cribbing, manholes, endwalls, buildings, sewers, service pipes, underdrains, foundation drains, and other constructed features that may be encountered in the work.

Subbase – The layer or layers of material placed on a subgrade to support a base.

Subcontract – The written agreement between the Contractor and an individual or legal entity prescribing the performance of a specific portion of the work.

Subcontractor – An individual or legal entity with which the Contractor sublets part of the work. This includes all subcontractors in any tier.

Subgrade – The top surface of a roadbed upon which the pavement structure and shoulders are constructed. Substantial Completion – The point at which a project is complete such that it can be safely and effectively used without further delays, disruption, or other impediments.

Suitable Material – Rock or earth material that will provide stable foundations, embankments, or roadbeds, and is reasonably free or organic matter, roots, muck, sod, or other detrimental material. Suitable material may require drying or adding water, root picking, and other methods of manipulation before use. Suitable material includes the classifications of materials for which the project was designed.

Superintendent – The Contractor’s authorized representative in responsible charge of the work.

Surety – An individual or corporation legally liable for the debt, default, or failure of a Contractor to satisfy a contract obligation.

Surface Course – The top layer or layers of a pavement structure designed to accommodate the traffic load and resist skidding, traffic abrasion, and weathering.

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. (One board foot equals 1 inch by 12 inches by 12 inches.)

Timber Sale – A Government issued contract for the removal of timber from National Forest System lands.

Traveled Way – The portion of the roadway designated for the movement of vehicles, including curve widening, exclusive of shoulders.

Unsuitable Material – Material not capable of creating stable foundations, embankments, or roadbeds. Unsuitable material includes muck, sod, or soils with high organic content.

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

Work – The furnishing of all labor, material, equipment, and other incidentals necessary to successfully complete the project according to the contract.

Products:

1. Government furnished property: None.

2. Source of Supply and Quality Requirements: Select sources and provide acceptable material. Notify the CO of all proposed sources before delivery to the project to expedite material inspection and testing. Do not incorporate material requiring submittal into the work until approved. Material may be approved at the source of supply before delivery to the project. Approval does not constitute acceptance. If an approved source does not continue to supply acceptable material during the life of the project, further use of that source may be denied.

3. Contractor furnished products: All.

Figure 1.0: Uwharrie Hunt cap Improvement Project Location

Figure 1.1: Existing Parking Lot Figure 1.2: Existing Road Moccasin Creek Rd.

Existing Culvert Outlet

Figure 1.3: Existing ditch along Moccasin Creek Rd

Figure 1.3: Existing Culvert Inlet (18” steel Culvert )

Figure 1.3: Existing Culvert outlet with Stone headwall (18” steel Culvert )

Execution: Contractor coordination.

1. The Contractor shall schedule a pre-construction meeting two weeks prior to starting their construction operations.

2. The Contractor shall provide vendor mill stamps or letter of compliance with material specifications upon delivery.

3. The Contractor shall coordinate with the Government to minimize interruptions of public and private operations.

4. The Contractor shall provide traffic control service and markers compliant with MUTCD for low volume roads.

5. The Contractor shall locate and protect all utilities during construction.

6. The Contractor shall locate, protect, or perpetuate any survey monuments or property corners within the construction limits of the jobsite.

7. The Contractor shall coordinate with the Government to have any vehicles moved which may hinder contractor operations.

8. The contractor shall police for tire laceration hazards with a magnet daily.

9. The contractor will remove all old culverts, debris, rags, waste material; tools etc. from the project site at the end of each workday and properly dispose of offsite.

HUNT CAMP PARKING LOT IMPROVEMENT SCHEDULE OF ITEMS

SUBTOTAL

Performance standards are as follows:

ITEM

151.01 This work consists of moving personnel, equipment, material, and incidentals to the project and performing work necessary before beginning work at the project site.

This work also includes obtaining permits, insurance, and bonds.

Description 212.01 This work consists of constructing roadbeds within the specified alignment and grade tolerances.

Construction Requirements

212.02 Roadway Preparation. Clear the area of vegetation and obstructions according to Sections 201 and 203.

212.03 Roadway Excavation and Embankment. Construct the roadbeds according to the applicable requirements of Section 204, except as modified herein.

Adjust the moisture content of embankment material to a moisture content suitable for compaction. Place embankment material in 12-inch (300-millimeter) layers and compact each layer according to Subsection 204.11(a). Where compacting with rollers is not practical, use approved mechanical or vibratory compaction equipment.

Construct approach connections to existing roads, parking areas, and trails. Construct new approaches.

212.04 Grading Tolerance. Do not encroach on stream channels, impact wetlands, or extend beyond right-of-way or easement limits. Do not make alignment or profile grade adjustments that adversely affect drainage. Construct the roadbed within the following grading tolerances:

(a) Alignment (centerline). Alignment may be shifted a maximum of 10 feet (3 meters) left or right of the planned centerline. Curve radii may be reduced by up to 50 percent. Do not construct curves with radii less than 100 feet (30 meters). Compound curves are permitted.

(b) Profile grade. Profile grade may be shifted a maximum of 5 feet (1.5 meters) up or down from the plan elevation provided the new grade tangent does not vary more than 2 percent from the plan grade tangent. Connect revised forward and back grade tangents with a uniform vertical curve consistent with the design.

Description

635.01 This work consists of furnishing, installing, maintaining, relocating, and removing temporary traffic control devices and services as ordered for the control and protection of public traffic through the project.

Advance warning arrow board, barricade, and warning light types are designated in the MUTCD.

Material

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

Concrete barrier (temporary) 618 Delineator and object marker retroreflectors 718.08(b) Guardrail (temporary) 617 Retroreflective sheeting 718.01 Sign panels 633.05 Signposts 633.04 Temporary plastic fence 710.11 Temporary pavement markings 718.16

251.01 This work consists of furnishing and placing riprap for bank protection, slope protection, drainage structures, and erosion control.

Riprap acceptance methods are designated according to Table 251-1. If no acceptance method is designated, use Method A.

Riprap classes are designated according to Table 705-1.

Geotextile filters are designated according to Table 714-1.

Material

251.02 Conform to the following Subsections:

Geotextile 714.01 Neat hydraulic cement grout 725.13(a)(2) Riprap 705.02 Construction Requirements

251.03 General. Perform the work under Section 209. Dress the slope to produce a smooth surface. If geotextile filter is required, place according to Section 207.

251.04 Placed Riprap. Placed riprap is rock placed on a prepared surface to form a well-graded mass. Place riprap to its full thickness in one operation to avoid displacing the underlying material. Do not place riprap material by methods that cause segregation or damage to the prepared surface. Place or rearrange individual rocks by mechanical or hand methods to obtain a dense uniform blanket with a reasonably smooth surface.

209.01 This work consists of excavating material for the construction of structures, except those specifically designated under Section 208. This work also includes preserving channels, shoring and bracing, sealing foundations, dewatering, preparing foundations, bedding, and backfilling.

Material

209.02 Conform to the following Sections and Subsections:

Backfill material 704.03 Bedding material 704.02 Foundation fill 704.01 Lean concrete backfill 614 Structural concrete, Class S (Seal) 552 Unclassified borrow 704.06

Construction Requirements

209.03 General. Clear the area of vegetation and obstructions according to Sections 201 and 203.

Excavate trenches or foundation pits according to Subsection 208.03. Excavate to foundation grade without disturbing the trench or foundation surface. Foundation grade is the elevation at the bottom of the bedding for installing the structure.

209.04 Channel Preservation. Preserve channels according to Subsection 208.04, except excavate inside separations such as dikes or sandbags.

209.05 Foundation Seal. When foundation seals are necessary, construct a foundation seal according to Subsection 208.06.

209.06 Dewatering. When dewatering is necessary, dewater according to Subsection 208.07.

209.07 Foundation Preparation. Excavate unsuitable material when encountered at foundation grade as directed by the CO.

Where a footing is required to be keyed into undisturbed material, prepare foundation and construct footing according to Subsection 208.08(c).

Backfill and compact with foundation fill according to Subsection 208.08(d).

209.08 Bedding. Place bedding as follows:

(a) For box culverts and structures other than pipe culverts. Construct bedding when specified. Place and grade bedding material in compacted layers not exceeding 6 inches (150 millimeters) in depth. Compact each layer according to Subsection 209.10.

(b) For pipe culverts. Level the foundation. Place uncompacted bedding material over the foundation in a layer of uniform thickness. Lay a 4-inch (100-millimeter) thickness of bedding for pipes with diameters of 12 to 54 inches (300 to 1350 millimeters). Lay a 6-inch (150-millimeter) thickness of bedding for pipe with diameters larger than 54 inches (1350 millimeters). Recess the bedding to receive the joints for pipes with belled joints. Place the culvert on the uncompacted bedding layer and backfill according to Subsection 209.09(b)

209.09 Backfill. Backfill as follows:

(a) General. Place backfill layers evenly on all sides of the structure. Extend each layer to the limits of the excavation or natural ground.

Place backfill material in compacted layers not exceeding 6 inches (150 millimeters) in depth.

Do not place backfill material against concrete until 80 percent of the design strength is achieved.

Compact each layer according to Subsection 209.10.

(b) Pipe culverts. Backfill according to one of the following:

(1) Pipe culverts. Place and compact backfill material in evenly balanced layers on each side of the pipe to a height of 12 inches (300 millimeters) above the top of the pipe culvert. Complete backfilling to the top of the trench. Place and compact backfill material in the trench in layers not exceeding 6 inches (150 millimeters) in depth according to Subsection 209.10.

707.03 Aluminum-Alloy Corrugated Pipe. Furnish pipe, special sections (such as elbows, branch connections, and prefabricated flared end sections) and coupling bands conforming to AASHTO M 196 for the dimensions and thicknesses specified.

Fabricate underdrain pipe from aluminum sheets with a minimum thickness of 0.048 inches (1.22 millimeters). Use any class of perforation.

Standard Specification - Culvert

403.01 This work consists of constructing asphalt concrete pavement using a hot or warm mix asphalt (HMA or WMA).

Asphalt concrete type is designated as Type I or Type II according to Subsection 403.02.

Construction Requirements

403.02 Composition of Mix (JMF). Conform to current state department of transportation material specifications for asphalt concrete.

(a) Type I. Submit a state department of transportation JMF approved within the past 12 months for approval at least 30 days before production. For each proposed JMF, submit a production certification conforming to state department of transportation specifications and conforming to design parameter (a), (b), or (c) for the type of mix submitted and conforming to design parameter (d) in Table 403-1

(b) Type II. Provide a mix composed of crushed stone or gravel and asphalt binder mixed in an approved plant. Use an aggregate gradation and asphalt binder of a quality conforming to those normally used locally by either Federal or state agencies for the type of work being constructed.

Submit the strength, quality, and gradation specifications for the asphalt concrete mix. Include copies of laboratory test reports that demonstrate aggregate, asphalt binder, additive, and mix properties meet Federal, state or local government agency specifications.

For both Type I and Type II, submit the maximum specific gravity (density) of the mix as determined by AASHTO T 209.

403.03 Production Start-Up Procedures. See Subsection 153.04(b).

403.04 Mixing Plant. See Subsection 401.04.

403.05 Surface Preparation. See Subsection 401.06.

403.06 Weather Limitations. See Subsection 401.07.

403.07 Hauling. See Subsection 401.11.

403.08 Placing and Finishing. Do not use mixes produced from different plants unless the mixes are produced according to the same JMF, use material from the same sources, and are approved.

Place HMA at a temperature conforming to Table 401-2. Place WMA at temperatures conforming to Subsection 401.03. Measure temperature of the asphalt concrete mix in the hauling vehicle just before dumping into the spreader or measure it in the windrow immediately before pickup.

(a) Asphalt concrete for roadway construction. Place the mix with a paver conforming to Subsection 401.05. Control horizontal alignment using a reference line. Automatically control the grade and slope from reference lines, a ski and slope control device, or dual skis. Use skis having a minimum length of 20 feet (6 meters).

In areas where mechanical spreading and finishing is impractical; place and finish the asphalt concrete mix according to Subsection 403.08(b).

Offset the longitudinal joint according to Subsection 401.1

403.09 Compacting. Thoroughly and uniformly compact the asphalt surface by rolling. In places inaccessible to rollers, use alternate equipment approved by the CO. Do not cause cracking, shoving or undue displacement.

Monitor the compaction process with nuclear density gauges calibrate according to the ASTM D2950 calibration section within 6 months before use. Check the standard and reference on each day of use according to the ASTM D2950 standardization and reference check sections. Compact to at least 91.0 percent of the maximum specific gravity (density) determined in Subsection 403.02.

Continue compaction until surface marks are eliminated and cracks are sealed.

403.10 Joints, Trimming Edges, and Cleanup. See Subsection 401.15.

403.11 Pavement Straightedge Measurement. Measure the pavement surface using a 10-foot (3-meter) metal straightedge at right angles and parallel to the centerline. Defective areas are deviations between the surface and the bottom of the straightedge in excess of ¼ inches (6 millimeters) measured between two contacts of the straightedge or deviations in excess of ¼ inches (6 millimeters) measured at the end of the straightedge. Section 403 311 Correct defective areas according to Subsection 401.16(g)(1) through (4). Obtain approval for the method of correction.

303.01 This work consists of reconditioning ditches, shoulders, roadbeds, aggregate surfaces, or the entire road.

Material

303.02 Conform to the following Subsection:

Water 725.01(c)

Construction Requirements

303.03 Ditch Reconditioning. Remove slide material, sediment, vegetation, and other debris from existing ditches and culvert inlets/outlets. Reshape ditches and culvert inlets/outlets to achieve positive drainage and uniform ditch width, depth, and grade. Dispose of waste at designated sites or according to Subsection 204.14

Description

301.01 This work consists of constructing one or more courses of aggregate on a prepared surface.

Subbase and base aggregate grading is designated according to Table 703-2.

Material

301.02 Conform to the following Subsections:

Subbase, base, and surface coarse aggregate 703.05

703.05 Subbase, Base, and Surface Course Aggregate.

(a) General. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming the following:

(6) Without organic matter and lumps or balls of clay.

(b) Subbase or base aggregate. In addition to Subsection 703.05(a), conform to the following:

(1) Gradation Table 703-2

(2) Liquid limit, AASHTO T 89 25 max

Table 703-2

Target Value Ranges for Subbase and Base Gradation

Grading Designation

1½ inch (37.5 mm)

97-100 (1)

¾ inch (19 mm)

⅜ inch (9.5 mm)

(1) Statistical procedures do not apply.

() The value in the parentheses is the allowable deviation (±) from the target values.

(c) Surface course aggregate. In addition to Subsection 703.05(a), conform to the following:

Do not furnish material that contains asbestos fibers.

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

Compaction A. Operating spreading and hauling equipment over the full width of the travel way.

Compaction B. Operate rollers and compact as specified in Subsection 204.11(a)(1).

Compaction C. 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)(1).

Compaction D. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 99, method C or D.

Compaction E. Compact 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).

Compaction F. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 180, method C or D.

Compaction G. Compact to a density of at least 100 percent of the maximum density as determined by the Modified Marshall Hammer Compaction Method (available upon request

204.11 Compaction. For compaction, use AASHTO T 27 to determine the quantity of material retained on a No. 4 (4.75-millimeter) sieve. Compact as follows:

(a) More than 80 percent retained on a No. 4 (4.75-millimeter) sieve. Adjust the moisture content to a level suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Use compression-type rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second. Compact each layer of material full width with one of the following and until there is no visible evidence of further consolidation:

(1) Four roller passes of a vibratory roller having a minimum dynamic force of 40,000 pounds (180 kilonewtons) impact per vibration and a minimum frequency of 1000 vibrations per minute image2.jpeg image3.jpeg image4.jpeg image5.jpeg image6.jpeg image7.png image8.png image9.png image1.jpeg