FSSS.pdf

FSSS – Table of Contents

Dolores – Norwood Asphalt Repair and Chipseal

Table of Contents

101 - Terms, Format, and Definitions

102 - Bid, Award, and Execution of Contract

103 - Scope of Work

104 - Control of Work

105 - Control of Material

106 - Acceptance of Work

107 - Legal Relations and Responsibility to the Public

108 - Prosecution and Progress

109 - Measurement and Payment

153 - Contractor Quality Control

155 - Schedules for Constuction Contracts

203 - Removal of Structures and Obstructions

404 - Minor Hot Asphalt Concrete

409 - Asphalt Surface Treatment

634 - Permanent Pavement Marking

635 - Temporary Traffic Control

702 - Asphalt Material

703 - Aggregate

714 - Geotextile and Geogrids

718 - Traffic Signing and Marking Material

All specifications refer to FP-03 Standard Specifications for Construction of Roads and Bridges on Federal Highway

Projects.

Preface

Preface_wo_03_15_2004_m

Delete all but the first paragraph and add the following:

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

101 - Terms, Format, and Definitions

101.00_nat_us_07_25_2005

101.01_nat_us_04_04_2007

101.01 Meaning of Terms

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

101.03_nat_us_06_16_2006

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

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

Add the following to (b) SI symbols:

mp Milepost ppm Part Per Million

101.04_nat_us_03_29_2007

101.04 Definitions.

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

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

Culvert--No definition.

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

Add the following:

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

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

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

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

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

Department of Agriculture.

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

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

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

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

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

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

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

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

Figure 101-1—Illustration of road structure terms.

102 - Bid, Award, and Execution of Contract

102.00_nat_us_02_16_2005

102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work

103.00_nat_us_02_16_2005

Deletions

Delete all but subsection 103.01 Intent of Contract.

104 - Control of Work

104.00_nat_us_06_16_2006

Deletions

Delete Sections 104.01, 104.02, and 104.04.

104.06_nat_us_02_17_2005

Add the following subsection:

104.06 Use of Roads by Contractor

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

105 - Control of Material

105.02_nat_us_01_18_2007

105.02 Material Sources.

105.02(a) Government-provided sources.

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_nat_us_05_12_2004

105.05 Use of Material Found in the Work.

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

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

106 - Acceptance of Work

106.07_nat_us_05_11_2004

106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility to the Public

107.05_nat_us_05_11_2004

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06_nat_us_06_16_2006

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.09_nat_us_06_16_2006

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

107.10_nat_us_06_16_2006

107.10 Environmental Protection.

Add the following:

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

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

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

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

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

• Containment procedures.

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

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

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

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

108 - Prosecution and Progress

108.00_nat_us_02_16_2005

108 Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment

109.00_nat_us_02_17_2005

109 Deletions Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.02_nat_us_06_16_2006

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

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

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

Add the following definition:

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

Section 153. — CONTRACTOR QUALITY CONTROL

153.03 Testing.

Delete this subsection in entirety and substitute the following:

153.03 Sampling and Testing

(a) Sampling. Sample material to be tested according to the Sampling and Testing Requirements tables included at the end of each section. The sampling schedules and times will be generated by the contractor using a random number system. In addition, sample any material that appears defective or inconsistent with similar material being produced unless such material is voluntarily removed and replaced or corrected.

Sample and split samples according to AASHTO or other acceptable procedures. Allow the USFS the opportunity to witness all sampling. Immediately perform companion splits on all samples required. Store the Government’s portion of the sample or split sample in an acceptable container suitable for shipment and make available upon request for independent assurance sampling. Store all samples not requested until the end of the job and the CO will notify the contractor in writing as to their disposition.

Label all samples with the following information:

(1) Project number;

(2) Source of material;

(3) Pay item number;

(4) Sample number;

(5) Date sampled;

(6) Time sampled;

(7) Location sample taken;

(8) Name of person sampling;

(9) Name of person witnessing sampling; and

(10) Type of test required on sample.

(b) Testing. Perform testing according to the accepted quality control plan. Keep laboratory facilities clean and maintain all equipment in proper working condition. Allow unrestricted access for inspection and review of the facility.

Measurement and Payment

153.06

Delete in entirety and substitute the following:

153.06 Do not measure Contractor quality control for payment. Payment for this work shall be incidental to other items.

155 - Schedules for Construction Contracts

155.00_nat_us_05_11_2004

155 Delete.

Delete Section 155 in its entirety.

203 - Removal of Structures and Obstructions

203.05_0114_us_02_15_2005

203.05 Disposing of Material.

(a) Remove from project.

Delete the last two sentences

Section 404 – MINOR HOT ASPHALT CONCRETE

Delete the entire section, rename to HOT MIX ASPHALT and replace with the following:

Description

404.01 This work consists of constructing one or more courses of hot mix asphalt (HMA) pavement on a prepared base in accordance with these specifications, and in conformity with the lines, grades, thicknesses, and typical cross sections shown on the plans or established in the field.

The HMA pavement shall be composed of a mixture of aggregate, filler if required, and asphalt cement.

Hot Mix Asphalt (Patching) consists of those quantities required for the replacement of unstable corrugated areas in the existing pavement, pipe trenches, areas removed for curb & gutter forms, areas between the curb & gutter or sidewalk and the existing paved parking lots, and areas designated on the plans. These quantities will be restricted to small areas which require hand placement methods and conventional paving equipment can not be utilized.

Construction Requirements

404.02 Composition of Mix (Job-Mix Formula).

Delete the second paragraph and replace with the following:

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

404.03 Surface Preparation. Prepare the surface according to Section 209 or Subsection 410.05 as applicable.

404.04 Weather Limitations. Place asphalt concrete on a dry, unfrozen surface when the air temperature in the shade is at least 45° F and rising.

404.05 Hauling. Haul the asphalt mix using vehicles conforming to Subsection 401.11.

404.06 Placing. Place the mix with a mechanical paver. For roadway paving, do not place lifts thicker than 4 inches. In areas where mechanical spreading and finishing is impractical, spread and finish each course by hand raking, screeding, or by other approved methods. Construct a surface that is uniform in texture and cross-section.

Construct joints according to Subsection 401.15.

404.07 Materials.

Bituminous Material. Emulsified asphalt shall be polymerized medium-set emulsified asphalt conforming to the requirements of subsection 702.03 for

HFMS-2P.

Cover Coat Material. Cover coat material shall meet the requirements of subsection 703.05 for the type specified. The material will be accepted at the spreader.

404.08 Excavation and Placement

Areas to be patched shall be excavated and squared to a neat line, leaving the sides of the excavation vertical. Prior to placement of the patch the exposed sides of the existing pavement shall be thoroughly coated with Emulsified Asphalt (slow setting). Hot mix asphalt shall then be placed and compacted in succeeding layers not to exceed 3 inches in depth.

404.09 Compaction.

Pavement shall be compacted to a density of 92 percent to 96 percent of the maximum theoretical density.

Measurement

404.10 Hot mix asphalt will be measured by the ton (ton). Batch mass (weights) will not be permitted as a method of measurement. The tonnage shall be the mass (weight) used in the accepted pavement. Deduction will not be made for the mass (weight) of bituminous material in the mixture.

Payment

404.11 The accepted quantities of hot mix asphalt will be paid at the contract price per ton for the bituminous material.

Pay Item Pay Unit 40401 – Asphalt Deep Patch Ton 40402 – Asphalt Blade Patch and pothole repair Ton

Aggregate, asphalt cement, asphalt recycling agent, additives, hydrated lime, and all other work necessary to complete each hot mix asphalt item will not be paid for separately, but shall be included in the unit price bid.

Excavation, preparation, and tack coat of areas to be patched will not be measured and paid for separately, but shall be included in the work.

Section 409 – ASPHALT SURFACE TREATMENT

Delete the entire section and replace with the following:

409.01 This work consists of furnishing and applying bituminous material and cover coat material on an existing surface, in accordance with these specifications and in conformity with the lines shown on the plans or established in the field.

Materials

409.02

Bituminous Material. Emulsified asphalt shall be polymerized medium-set emulsified asphalt conforming to the requirements of subsection 702.03 for

HFMS-2P.

Cover Coat Material. Cover coat material shall meet the requirements of subsection 703.05 for the type specified. The material will be accepted at the spreader.

409.03 Composition. Submit the following information and samples for approval at least 21 days before placement:

(a) Aggregate gradation target values. The proposed percentage of each stockpile to be used and the proposed target value for each sieve size.

(b) Asphalt samples. Asphalt shall conform to Section 702. Submit a Certificate of Compliance for the emulsified asphalt.

(c) Spread rates. The proposed spread rate for the aggregate and asphalt material.

409.04 Equipment. Furnish equipment or approved equal as follows:

(a) Asphalt distributor.

(1) Capable of heating asphalt evenly;

(2) Adjustable full circulation spray bar to 15-foot width;

(3) Positive controls including tachometer, pressure gauges, volume measuring devices or a calibrated tank to uniformly deposit asphalt over the full width within 0.02 gallons per square yard of the required rate; and

(4) Thermometer for measuring the asphalt temperature in the tank.

(b) Rotary power broom.

(1) Self-propelled; and

(2) Capable of controlling the vertical broom pressure.

(c) Pneumatic tire rollers. Furnish a minimum of two pneumatic-tire rollers both with the following capabilities:

(1) Self-propelled;

(2) Minimum compacting width – 5 feet; and

(3) Gross weight adjustable within the range of 200 to 360 pounds per inch of compaction width.

(d) Aggregate spreader.

(1) Self-propelled;

(2) Minimum of 4 pneumatic tires on 2 axles; and

(3) Positive controls to uniformly deposit the aggregate over the full width of asphalt within 10 percent by mass of the required rates.

409.05 Preparation of Surface. The entire surface that is to receive a seal coat shall be cleaned of loose sand, dust, rock, mud, and all other debris that could prevent proper adhesion of the bituminous coating. The cleaning shall be accomplished by power broom, scraping, blading, or other approved measures. Seal coating operations shall not be started until the surface is approved.

409.06 Weather Limitations. Bituminous material shall not be applied on a damp surface, when either the air or pavement surface temperature is below 60 degrees F, or when weather conditions would prevent the proper construction of the seal coat.

409.07 Production Start-up Procedures for Surface Treatments. At least 10 days before the start of constructing all surface treatments containing aggregate, arrange for a pre-surface treatment conference. Coordinate attendance with the CO and any applicable subcontractors. Be prepared to discuss or submit the following:

(a) Proposed schedule of operations.

(b) List of all equipment and personnel to be used in the production and construction of the work.

(c) Proposed traffic control plan.

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

(e) Discuss Subsections 409.07, 409.08, and 409.09.

(f) Discuss spill prevention and safety contingency plan.

Provide 7 days advance notice before constructing all asphalt surface treatments containing aggregate. Also use these start-up procedures when resuming production after termination due to nonconforming work.

On the first day of placement of each surface treatment layer, or whenever there is a change in the surface texture or aggregate gradation, construct a 100-foot control strip that is one-lane wide.

Construct the control strip using material, lay-down, and compaction procedures intended for the remainder of the surface treatment. Cease production after construction of the control strip until the material and the control strip are evaluated and accepted.

Acceptable control strips may remain in place and will be accepted as a part of the completed surface treatment.

Repeat the control strip process until an acceptable control strip is produced.

409.08 Asphalt Application. Calibrate the asphalt distributor spray bar height, nozzle angle, and pump pressure and check longitudinal and transverse spread rates weekly according to ASTM D 2995. If different asphalt distributors are used, calibrate each before use on the project. Ensure that the length of the spread is no more than can be covered with aggregate immediately after application.

409.09 Aggregate Application. Cover Coat Material shall be moistened with water prior to spreading. The cost of moistening the aggregate shall be included in the cost of the Cover Coat Material. The CO will approve the exact application rate and area to be treated before application. Apply the aggregate uniformly with an aggregate spreader immediately after the asphalt is applied. Operate aggregate spreader so the asphalt is covered with the aggregate before wheels pass over it. During part-width construction, leave uncovered a strip of sprayed asphalt approximately 6 inches wide to permit an overlap of asphalt material.

Immediately correct excesses and deficiencies by brooming or by the addition or removal of aggregate until a uniform texture is achieved. Use hand methods in areas not accessible to power equipment.

Operate rollers at a maximum speed of 5 miles per hour. Do not permit the aggregate to be displaced by pickup or sticking of material to the tire surface. Sufficiently roll the surface to uniformly and thoroughly bond the aggregate over the full width. Complete rolling within 1 hour after the asphalt is applied to the surface.

409.10 Single-Course Surface Treatment. A single-course surface treatment consists of applying asphalt material onto an existing surface immediately followed by a single, uniform application of aggregate. Apply the asphalt and aggregate according to Subsections 409.08 and 409.09 at the approximate rates shown in Table 409-1.

Determine the exact rates based on approved control strips. Do not permit traffic to travel over any Asphalt Surface Treatment until completion of rolling.

During the initial 45 minutes after completion of rolling, limit the traffic speeds to 10 miles per hour. Limit traffic speeds to 20 miles per hour for 24 hours.

Lightly broom the aggregate surface on the morning after construction. Brooming is incidental to Pay Item 40901. The Contractor shall maintain the chip sealed roadway surface, as directed by the CO, for the duration of the project. Sweep excess material from the surface using a rotary power broom when the temperature is less than 75 °F. Do not displace embedded material.

Table 409-1

Approximate Quantities of Material for Single-Course Surface Treatment

Designation Nominal

Maximum Size of

Aggregate

Aggregate Gradation (1)

Estimated Quantity of Aggregate (2) pounds/yd2

Estimated Quantity of Emulsified Asphalt (3) gallons/yd2

1B 1/2 inch Class 2 25 0.50

(1) See Table 703-7 for aggregate gradations.

(2) Aggregate masses are for aggregates having a bulk specific gravity of 2.65, as determined by AASHTO T 84 and T 85. Make proportionate corrections when the aggregate furnished has a bulk specific gravity above 2.75 or below 2.55.

(3) Adjust the asphalt content for the condition of the road.

409.13 Acceptance.

Asphalt binder, and emulsified asphalt, will be evaluated under Subsections 106.04 and 702.09.

Aggregate gradation for asphalt surface treatment will be evaluated under Subsection 106.05.

The upper and lower specification limits are equal to the calculated mean of all test results plus or minus the allowable deviations shown in Table 703-7, except as follows:

(a) If the calculated mean value for any tested sieve exceeds the maximum gradation value shown in Table 703-7, the upper specification is equal to the maximum gradation value plus the allowable deviation, and the lower specification is equal to the maximum gradation value minus the allowable deviation.

(b) If the calculated mean value for any tested sieve is less than the minimum gradation value shown in Table 703-7, the upper specification is equal to the minimum gradation value plus the allowable deviation, and the lower specification is equal to the minimum gradation value minus the allowable deviation.

Construction of asphalt surface treatment course will be evaluated under Subsections

106.02 and 106.04.

Measurement

409.14 Surface treatment will be measured on the ground by the Square Yard.

Payment

409.15 The accepted quantities will be paid at the contract price per square yard for cover coat material. Payment will be full compensation for the work prescribed in this Section.

See Subsection 109.05.

Pay Item Pay Unit 40901 – Single Penetration Chipseal Square Yard

Section 634 - PERMANENT PAVEMENT MARKING

Delete this subsection and replace with the following:

634.05 Waterborne Traffic Paint. Striping shall be done when the air and pavement temperatures are at least 50° F. The pavement surface and weather conditions shall be conducive to satisfactory results. Paint shall meet the requirements of section 718.14.

Equipment shall be capable of painting a reasonably clean-edged stripe of the designated width ± ¼ inch and shall have a bead dispenser directly behind, synchronized with the paint applicator. For centerlines and lane lines, an automatic skip control shall be used that will paint a stripe with a gap that matches the existing striping.

Machines having multiple applicators shall be used for centerlines with “no passing zones.” In areas where machines are not practical, suitable hand-operated equipment shall be used. Stripes shall be protected until dry.

Paint and beads shall be applied within the following limits:

Application Rate or Coverage Per Gallon of Paint

Minimum Maximum

Paint: 100 sq. ft. 110 sq. ft.

Beads: AASHTO T-247-02, Type 1 5 lbs. 13 oz. 6 lbs. 3 oz.

Section 635 - TEMPORARY TRAFFIC CONTROL

635.01 Delete this paragraph and replace with the following.

This work consists of furnishing, installing, moving, maintaining and removing temporary traffic signs, advance warning arrow panels, flashing beacon (portable), barricades, channelizing devices, delineators, temporary traffic signals, masking and unmasking existing signs in construction zones, and concrete barriers as required by the Manual on Uniform Traffic Control Devices. When a device is not in use, the Contractor may remove it from the project for the period it is not needed. Devices temporarily not in use shall, as a minimum, be removed from the shoulder area. Moving will include devices removed from the project and later returned to use.

The Contractor’s Superintendent and all others serving in a similar supervisory capacity shall have completed a CDOT-approved two-day Traffic Control Supervisor training as offered by the CCA. The one-day ATSSA Traffic Control Technician (TCT) training along with the two-day ATSSA Traffic Control Supervisor training will serve as an alternate. If the alternate is chosen, the Contractor shall provide written evidence that at least an 80 percent score was achieved in both of the two training classes. The certifications of achievement for all appropriate staff shall be submitted to the CO at the preconstruction conference.

This work also includes Traffic Control Management, flagging and pilot car operation.

635.02 Flaggers Delete this paragraph and replace with the following:

Flagging shall be performed as described in the latest edition of part VI of the MUTCD.

All traffic control personnel shall wear safety apparel and hardhats meeting the requirements of the latest version of the ISEA “American National Standard for High- Visibility Safety Apparel and Headwear”. Safety apparel shall be labeled as meeting the standard performance for Class 2 or Class 3 risk exposure. The apparel and hardhat background material color shall be either fluorescent orange-red or fluorescent yellow-green as defined in the standard. The retroreflective material shall be either orange, yellow, white, silver, yellow-green, or a fluorescent version of these colors, and shall be visible at a minimum distance of 1,000 feet.

(a) The Contractor shall provide all flagging through the project necessary to assure proper safety to traffic. All flagging personnel shall have completed the Department’s minimum training requirements for flaggers within two years prior to starting work on the project.

(b) Reimbursement for flagging shall be limited to the following areas:

(1) The entire construction area under contract and for a distance of 500 feet outside the project limits or approach to project; except that if the project consists of two or more sections, the limits will apply to each section individually.

(2) Those areas beyond the above-described limits where the CO determines the use of flaggers are necessary to provide adequate warning to traffic.

(c) The authorized duties of flaggers consist of directing the traveling public and the construction traffic that affects the traveling public within the project limits.

635.03 Traffic Control Plan. A traffic control plan prepared by certified ATSSA personnel must be submitted to the CO for approval a minimum of 5 working days prior to construction. All construction signs and traffic control devices will be paid for as incidental to traffic management.

Section 702 – ASPHALT MATERIAL

702.03 The emulsion shall be pumpable and suitable for application through a pressure distributor.

Table702-6

HIGH FLOAT EMULSIFIED ASPHALT

(POLYMERIZED) (HFMS-2sP)

Section 703 – AGGREGATE

703.05

Delete this subsection and replace with the following.

703.05 Aggregate for Bases. Aggregates for bases shall be crushed stone, crushed slag, crushed gravel, natural gravel, or crushed reclaimed concrete or asphalt material which conforms to the quality requirements of AASHTO M 147 except that the requirements for the ratio of minus 75 ∝m (No. 200) sieve fraction to the minus No. 40 sieve fraction, stated in 2.2.2 of AASHTO M 147, shall not apply. The requirements for the Los Angeles wear test (AASHTO T 96) shall not apply to Class 1, 2, and 3. Aggregate for bases shall meet the grading requirements of Table 703-3 for the class specified for the project, unless otherwise specified.

The liquid limit shall be as shown in Table 703-3 and the plasticity index shall not exceed six when the aggregate is tested in accordance with AASHTO T89 and T 90 respectively.

Table 703-3

CLASSIFICATION FOR AGGREGATE BASE COURSE

Add the following.

703.08 Aggregate for Cover Coat Material. Aggregates for cover coat material shall be crushed stone, crushed slag, crushed gravel, or natural gravel. Aggregates shall be composed of clean, tough, durable fragments free from an excess of flat, elongated, soft, or disintegrated pieces and free from fragments coated with dirt or other objectionable matter. Aggregate for cover coat material shall meet the grading requirements of Table 703-8 for the class specified for the project, unless otherwise specified. Slag shall be air-cooled blast-furnace slag reasonably uniform in density.

The aggregate shall conform to the following requirements:

(1) Percentage of wear, Los Angeles Abrasion Test (AASHTO T 96), not more than 35.

(2) When blast-furnace slag is used, weight per cubic foot shall be at least 70 pounds.

(3) For Type I, II, or IV cover coat material, 90 percent by weight of the particles retained on the 4.75 mm (No. 4) sieve shall have at least two fractured faces when tested in accordance with Colorado Procedure 45.

(4) Lightweight aggregate used for cover coat material shall be an aggregate prepared by expanding shale, clay, or slate in a rotary fired kiln. Lightweight aggregate shall have a dry loose unit weight of 35 to 55 pounds per cubic foot determined in accordance with AASHTO T 19, Shoveling Procedure. The total mass of the test sample of lightweight aggregate used in AASHTO T 96 (Los Angles Abrasion) shall be 2000 g.

Table 703-8

MASTER RANGE TABLE FOR STONE MATRIX ASPHALT

Section 714 – Geotextile and Geogrids

714.03 Geogrids

Furnish biaxial geogrids consisting of polymeric materials such as polypropylene, polyethylene, or polyester formed into a stable network of bars or straps fixed at their junctions such that the bars retain their relative position to each other. Ensure that the geogrid is treated to resist ultraviolet degradation, and that it conforms to the physical strength requirements shown in Table 714- 7 in accordance with ASTM D 4595. The geogrid shall be integrally formed and deployed as a single layer having the following characteristics (ALL VALUES ARE MINUMUM AVERAGE ROLL VALUES

UNLESS A RANGE OR CHARACTERISTIC IS INDICATED):

Table 714-7 Physical Strength Requirements for Geogrids.

Property Test Method Units Properties

Aperture Stability Modulus at 20 cm-kg

Kinney - 01 cm-kg/deg 6.5

Rib Shape Observation N/A Rectangular or Square

Rib Thickness Calipered in

(mm)

0.05

(1.27)

Aperture Size I.D.

Calipered in

(mm)

0.9 to 1.5

(25 to 33)

Junction Efficiency GRI-GG2-87 % 93

Flexural Rigidity ASTM D1388-96 mg-cm 750,000

Minimum True Initial Modulus in Use – Ultimate Tensile Strength

ASTM

D6637-01

- MD

lb/ft

(kN/m)

1,310

(19.2)

- CMD

lb/ft

(kN/m)

1,970

(28.8)

Furnish the CO with a certificate from the company that manufactured the geogrid.

Ensure that the certificate attests that the geogrid meets the chemical, physical, material and manufacturing requirements stated in the specification. When requested by the CO, furnish a sample of the geogrid from each lot for verification testing.

During shipment and storage, wrap the geogrid in a heavy-duty protective covering.

Protect the geogrid from mud, soil, dust, debris and sunlight prior to installation.

Ensure that the geogrid meets the minimum average roll values for the wide-width strip tensile strength tests performed in accordance with ASTM D 4595. Provide test results to the CO prior to incorporating the geogrid into the work.

Tensar Biaxial Geogrid BX 1200 or approved equal meets these requirements.

Section 718 – TRAFFIC SIGNING AND MARKING MATERIAL

Delete this subsection and replace with the following:

718.14 Waterborne Traffic Paint. Pavement marking paint shall conform to the requirements listed in the table below. All proportions are by weight. Pigment composition and vehicle composition shall not vary by more than 1.0 percent of each amount specified.

Finished Paint Pigment (White and Yellow) ......................................... 49.0% to 52.0%

(a) Pigment Composition. White & Yellow Titanium Dioxide, ASTM D 476, Type III 27.0% Yellow Pigment 35.0%* Calcium Carbonate, ASTM D 1199, Type GC-II 18.0% 53.3% Magnesium Silicate ASTM D 605 54.3% 11.0% Pigment Suspending Agents (see below) 0.7% 0.7%

*The pigment for yellow paint shall consist of a blend of organic yellow pigment and other pigments and fillers as are necessary to result in a colorfast paint complying with all provisions of this specification. The paint shall contain no lead or other material such that the dry film could be considered a hazardous waste under EPA or Colorado Department of Health Regulations.

(b) Vehicle Composition. White & Yellow Alkyd Resin Solution, AASHTO M 248, Type F 70.0% VM&P Naphtha, Fed. Spec. TT-N-95, Type I Driers, ASTM D 600 cl. B, and Anti-Skinning Agent, Methanol 30.0%

(c) Pigment Suspending Agent.

Organo-montmorillonite conforming to subsection 708.06(b) shall be added to achieve the desired storage and stability requirements.

(d) Properties of Finished Paint.

The paint at the time of container filling shall be free of skins, pigment agglomerates and foreign matter and shall meet the following requirements:

(1) Fineness of grind, Hegman, minimum 2

(2) Consistency, Krebs-Stormer, K.U. @ 25 °C (77 ºF) 70-80

(3) Drying time, a wet film of paint 380 micrometers thick tested according to ASTM Method D 711, minutes maximum 30

(4) Reflectance. The white paint shall have a daylight 45º, 0º luminous directional reflectance of not less than 80% when compared to magnesium oxide.

(5) Color. The color of the yellow paint shall visually match color chip No. 33538 of Federal Standard 595B. In case of dispute, the color shall be within the green and red tolerance limits when compared with the standard color chips of the Standard Yellow for Highway Signs and Markings - U.S. Department of Transportation, Washington, D.C. The manufacturer shall supply test data showing that the yellow pavement marking paint will retain the yellow color within these limits for a period of one year under outdoor sunlight exposure.