Technical Exhibit W-Div 32 EXTERIOR IMPROVEMENTS 23 May 2023.pdf

MOTCO Job Order Contract (SATOC) 2487

SECTION TABLE OF CONTENTS

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 01 13.62

ASPHALT SURFACE TREATMENT

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 QUALITY CONTROL

1.3.1 Safety Precautions

1.3.2 Sampling and Testing

1.3.3 Wear Test

1.3.4 Soundness Test

1.3.5 Stripping Test

1.4 DELIVERY, STORAGE, AND HANDLING

1.5 EQUIPMENT, TOOLS AND MACHINES

1.5.1 Bituminous Distributors

1.5.2 Single-Pass, Surface-Treatment Machines

1.5.3 Heating Equipment for Storage Tanks

1.5.4 Power Rollers

1.5.5 Mechanical Spreaders

1.5.6 Brooms and Blowers

1.5.7 Scales

1.5.8 Weighhouse

1.6 ENVIRONMENTAL REQUIREMENTS

PART 2 PRODUCTS

2.1 MINERAL AGGREGATE

2.1.1 Crushed Stone

2.1.2 Crushed Gravel

2.1.3 Crushed Slag

2.1.4 Aggregate Quantities

2.2 BITUMINOUS MATERIALS

2.2.1 Emulsified Asphalt

2.2.2 Asphalt Cement

PART 3 EXECUTION

3.1 SURFACE PREPARATION

3.2 APPLICATION OF FIRST COURSE

3.2.1 Bituminous Material

3.2.2 Spreading of Aggregate

3.2.3 Brooming and Rolling

3.3 APPLICATION OF SECOND COURSE

3.3.1 Bituminous Treatment

3.3.2 Aggregate

3.3.3 Brooming and Rolling Second Course

3.4 APPLICATION TEMPERATURE OF MATERIALS

3.4.1 Emulsified Asphalt

SECTION 32 01 13.62 Page 1

3.4.2 Asphalt Cement

3.5 PROTECTION

-- End of Section Table of Contents --

SECTION 32 01 13.62 Page 2

SECTION 32 01 13.62

ASPHALT SURFACE TREATMENT

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C29/C29M (2017a) Standard Test Method for Bulk Density ("Unit Weight") and Voids in Aggregate

ASTM C88 (2018) Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate

ASTM C131/C131M (2020) Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

ASTM C136/C136M (2019) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM D75/D75M (2019) Standard Practice for Sampling Aggregates

ASTM D140/D140M (2016) Standard Practice for Sampling Asphalt Materials

ASTM D977 (2019a; E 2019) Standard Specification for Emulsified Asphalt

ASTM D1139/D1139M (2015) Aggregate for Single or Multiple Bituminous Surface Treatments

ASTM D2397/D2397M (2019a) Standard Specification for Cationic Emulsified Asphalt

ASTM D2995 (1999; R 2009) Determining Application Rate of Bituminous Distributors

ASTM D3625/D3625M (2012) Standard Practice for Effect of Water on Bituminous-Coated Aggregate Using Boiling Water

ASTM D6373 (2016) Standard Specification for Performance Graded Asphalt Binder

SECTION 32 01 13.62 Page 3

1.2 SUBMITTALS

Government approval is required for submittals with a "G" classification.

Submittals not having a "G" classification are for information only.

When used, a code following the "G" classification identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Emulsified Asphalt Asphalt Cement

SD-06 Test Reports

Tests

1.3 QUALITY CONTROL

1.3.1 Safety Precautions

Smoking or open flames will not be permitted within 25 feet of heating, distributing, or transferring operations of bituminous materials other than bituminous emulsions.

1.3.2 Sampling and Testing

Sampling and testing is the responsibility of the Contractor. Perform sampling and testing using an approved commercial testing laboratory, or by the Contractor, subject to approval. Sampling must be in accordance with ASTM D75/D75M for aggregates and ASTM D140/D140M for bituminous material, unless otherwise directed. Perform aggregate gradation tests on each sample in accordance with ASTM C136/C136M. Perform all other aggregate tests on the initial source samples and repeat tests when there is a change of source. Perform sieve analyses daily from material samples including an analysis of each gradation of material. Perform tests in sufficient number to ensure that materials meet specified requirements.

Submit copies of test results, within 24 hours after completion of each test. Repeat aggregate testing (wear, soundness, deleterious material and stripping) for each 20,000 tons of aggregate used in the project.

1.3.3 Wear Test

Perform the wear test in accordance with ASTM C131/C131M to ensure that aggregates have a percentage of wear not exceeding 40 percent after 500 revolutions.

1.3.4 Soundness Test

Perform the soundness test as specified by ASTM C88 to ensure that aggregates have a weight loss not greater than 18 percent when subjected to five cycles of the magnesium sulfate test or 12 percent when subjected to five cycles of the sodium sulfate test.

1.3.5 Stripping Test

Perform stripping tests meeting the requirements of ASTM D3625/D3625M .

Deleterious substances must not exceed the requirements of

ASTM D1139/D1139M .

SECTION 32 01 13.62 Page 4

1.4 DELIVERY, STORAGE, AND HANDLING

Inspect the materials delivered to the site for contamination and damage.

Unload and store the materials with a minimum of handling. Store aggregates preventing segregation and contamination.

1.5 EQUIPMENT, TOOLS AND MACHINES

Provide equipment dependable and adequate for the purpose intended and properly maintained in satisfactory and safe operating condition at all times. Discontinue the use of equipment which fails to produce satisfactory work and replace with satisfactory equipment. Equipment such as asphalt distributors, scales, batching equipment, spreaders and similar equipment, must have been calibrated by an approved calibration laboratory within 12 months prior to commencing work and every 6 months thereafter, by such laboratory from the date of last calibration, during the term of the contract.

1.5.1 Bituminous Distributors

Provide a self propelled distributor with pneumatic tires of such size and number to prevent rutting, shoving or otherwise damaging the surface being sprayed. Calibrate the distributer in accordance with ASTM D2995. Design and equip the distributor to spray the bituminous material in a uniform coverage at the specified temperature, at readily determined and controlled total liquid rates from 0.03 to 1.0 gallons per square yard, with a pressure range of 25 to 75 psi and with an allowable variation from the specified rate of not more than plus or minus 5 percent, and at variable widths. Include with the distributor equipment a separate power unit for the bitumen pump, full-circulation spray bars, tachometer, pressure gauges, volume-measuring devices, adequate heaters for heating of materials to the proper application temperature, a thermometer for reading the temperature of tank contents, and a hand hose attachment suitable for applying bituminous material manually to areas inaccessible to the distributor. The distributor will be capable of circulating and agitating the bituminous material during the heating process.

1.5.2 Single-Pass, Surface-Treatment Machines

Use only machines capable of spraying bituminous material and spreading aggregate in one pass. Use only bituminous spraying equipment conforming to the requirements given above for a bituminous distributor. Use only machines capable of spreading aggregates at controlled amounts per square yard as specified. In addition, only use single-pass, surface-treatment machines capable of placing a surface treatment adjacent to an existing surface treatment, forming a joint of the same thickness and uniformity as other portions of the surface treatment. Ridges or blank spaces will not be permitted. Form joints in the second application at least 1 foot from those formed in the first application.

1.5.3 Heating Equipment for Storage Tanks

Use equipment consisting of coils and equipment for producing steam or hot oil and designed to prevent the introduction of steam or hot oil into the material. Affix an armored thermometer with a range of 100 to 400 degrees F to the tank so the temperature of the bituminous material may be determined at all times.

SECTION 32 01 13.62 Page 5

1.5.4 Power Rollers

Use only steel-wheeled or pneumatic-tired type power rollers conforming to the following requirements:

a. Use only steel-wheeled rollers having at least one steel drum and weigh a minimum of 5 tons. Equip steel wheels of the rollers with adjustable scrapers.

b. Use only self-propelled pneumatic-tired rollers having wheels mounted on two axles in such manner that the rear tires will not follow in the tracks of the forward group. Maintain uniform tire inflation to not less than 60 psi nor more than 80 psi pressure.

Equip pneumatic-tired rollers with boxes or platforms for ballast loading. Load rollers so that the tire print width of each wheel is not less than the clear distance between tire prints.

1.5.5 Mechanical Spreaders

Use only adjustable spreaders capable of spreading aggregate at controlled amounts per square yard, as specified.

1.5.6 Brooms and Blowers

Use only power type brooms and blowers capable of cleaning surfaces to be treated.

1.5.7 Scales

Use standard truck scales of the beam type equipped with a weight-recording device. Use scales with sufficient size and capacity to accommodate the trucks used in hauling aggregates. The scales must be tested and approved by an inspector of the State Inspection Bureau charged with scale inspection within the state in which the project is located.

If an official of the inspection bureau is not available, test the scales in accordance with state specifications and in the presence of the Contracting Officer. Keep the necessary number of standard weights on hand, at all times, for testing the scales.

1.5.8 Weighhouse

Provide a weatherproof weighhouse constructed in a manner to afford adequate protection for the indicating and recording devices of the scales.

1.6 ENVIRONMENTAL REQUIREMENTS

Apply bituminous surface treatment only when the existing surface or base course is dry or contains moisture not in excess of the amount that will permit uniform distribution of the asphalt material and provide the desired adhesion between the asphalt material and the materials underneath and above. Do not apply bituminous surface treatment when either the atmospheric temperature, in the shade, is below 50 degrees F or the pavement surface to be treated is below 70 degrees F unless otherwise directed.

PART 2 PRODUCTS

Use mineral aggregate and bituminous material of the following types, gradations, grades, and consistencies that meet the requirements of

SECTION 32 01 13.62 Page 6 stripping, wear, deleterious materials and soundness tests as specified in paragraph SAMPLING AND TESTING.

2.1 MINERAL AGGREGATE

Provide aggregate consisting of crushed stone, crushed gravel, or crushed slag of such nature that thorough coating of bituminous material, used in the work, will not strip off upon contact with water when testing using ASTM D3625/D3625M . Maintain aggregate moisture content so that the aggregate will be readily coated with the bituminous material. Drying may be required, as directed. Use aggregate conforming to the gradation shown below. Determine gradation of the aggregates by ASTM C136/C136M.

AGGREGATE GRADATION SINGLE BITUMINOUS SURFACE TREATMENT

(PERCENT BY WEIGHT PASSING)

Sieve Designation No. 1 No. 2 No. 3

1 inch 100 -- --

3/4 inch 90-100 100 --

1/2 inch 20-55 90-100 100

3/8 inch 0-15 40-70 85-100

No. 4 0-5 0-15 10-30

No. 8 -- 0-5 0-10

No. 16 -- -- 0-5

AGGREGATE GRADATION DOUBLE BITUMINOUS SURFACE TREATMENT

(PERCENT BY WEIGHT PASSING)

Sieve Designation No. 1 No. 2 No. 3 No. 4

1 inch 100 -- -- --

3/4 inch 90-100 -- 100 --

1/2 inch 20-55 100 90-100 --

3/8 inch 0-15 85-100 40-70 100

No. 4 0-5 10-30 0-15 85-100

No. 8 -- 0-10 0-5 10-40

No. 16 -- 0-5 -- 0-10

No. 50 -- -- -- 0-5

SECTION 32 01 13.62 Page 7

2.1.1 Crushed Stone

Provide crushed stone consisting of clean, sound, durable particles, free of soft or disintegrated pieces, dust, or foreign matter.

2.1.2 Crushed Gravel

Provide crushed gravel consisting of clean, sound, durable particles, free of soft or disintegrated pieces or foreign matter. At least 90 percent by weight of the particles must have at least two fractured faces.

2.1.3 Crushed Slag

Provide crushed slag which is an air-cooled blast-furnace product having a dry weight of not less than 70 pcf, and consists of angular particles uniform in density and quality and free of dust and foreign matter.

Determine the weight of a cubic foot of slag aggregate by ASTM C29/C29M.

2.1.4 Aggregate Quantities

Spread the bituminous material and aggregate within the quantity limits shown below. The individual quantities of bituminous material and aggregate may be varied to meet specific field conditions at all times during progress of the work, as directed, without adjustments to contract unit prices. Aggregate weights shown are for aggregates having a specific gravity of 2.65. Adjust the number of pounds required if the specific gravity of the aggregate used is other than 2.65 in order to ensure a constant volume of aggregate per square yard of treatment.

QUANTITIES (PER SQUARE YARD)

FOR SINGLE SURFACE TREATMENT

Gradation No. Bituminous Material (Gallons)

Aggregate (Pounds)

1 0.30-0.45 35-50

2 0.15-0.30 20-35

3 0.10-0.20 15-25

QUANTITIES (PER SQUARE YARD)

FOR DOUBLE SURFACE TREATMENT

Gradation No. Bituminous Material (Gallons) First Application

Aggregate (Pounds) First Spreading

Bituminous Material (Gallons) Second Application

Aggregate (Pounds) Second Spreading

1 0.20-0.30 28-34 -- --

2 -- -- 0.20-0.30 20-25

3 0.15-0.20 20-25 -- --

SECTION 32 01 13.62 Page 8

QUANTITIES (PER SQUARE YARD)

FOR DOUBLE SURFACE TREATMENT

Gradation No. Bituminous Material (Gallons) First Application

Aggregate (Pounds) First Spreading

Bituminous Material (Gallons) Second Application

Aggregate (Pounds) Second Spreading

4 -- -- 0.15-0.20 10-15

2.2 BITUMINOUS MATERIALS

2.2.1 Emulsified Asphalt

Use rapid-setting emulsified asphalt conforming to ASTM D977, Grade RS-1 or RS-2 or ASTM D2397/D2397M , Grade CRS-1 or CRS-2.

2.2.2 Asphalt Cement

Use asphalt cement conforming to ASTM D6373, Performance Graded Asphalt Binder PG 64-10. Submit temperature-viscosity relationship of asphalt cement.

PART 3 EXECUTION

3.1 SURFACE PREPARATION

Immediately before applying the first course of bituminous material, clean the surface of loose material with power brooms or power blowers. Take care to remove all dirt, clay, and other loose or foreign matter. Flush the surface with water, when necessary to achieve a clean surface, only when directed by the Contracting Officer; allow the surface to dry after flushing.

3.2 APPLICATION OF FIRST COURSE

3.2.1 Bituminous Material

Apply bituminous material by means of a bituminous distributor at the temperature specified in paragraph APPLICATION TEMPERATURE OF MATERIALS, below or as directed; and within the limits specified in paragraph QUANTITY LIMITS in PART 1. Apply bituminous material in such a manner that uniform distribution is obtained over all surfaces treated. Unless the distributor is equipped to obtain a satisfactory result at the junction of previous and subsequent applications, spread building paper on the surface for a sufficient distance back from the ends of each application so that flow through the sprays may be started and stopped on the paper in order that all sprays will operate at full force on the surface treated. Immediately after application, remove and destroy the building paper. Properly treat areas inaccessible to the distributor with bituminous material using the hose attachment. Protect adjacent buildings, structures, and trees to prevent their being spattered or marred.

SECTION 32 01 13.62 Page 9

3.2.2 Spreading of Aggregate

Immediately following application of bituminous material, spread aggregate uniformly over the surface within the limits of the quantities specified in paragraph QUANTITY LIMITS in PART 1 using mechanical spreaders. Spread aggregate evenly by hand on all areas missed by the mechanical spreader.

Operate equipment spreading aggregate so that the bituminous material will be covered ahead of the truck wheels. When hand spreading is employed on inaccessible areas, spread aggregate directly from trucks. Spread additional aggregate by hand over areas having insufficient cover.

Continue spreading during these operations when necessary.

3.2.3 Brooming and Rolling

Roll the surface with a pneumatic-tired and a steel-wheeled roller after sufficient aggregate is spread. Continue rolling until no more aggregate can be worked into the treated surface. The use of the steel-wheeled roller will be discontinued, or a lighter weight steel wheel roller substituted, as directed, if the roller being used causes excessive crushing and shattering of the aggregate. If the aggregate is not distributed properly, broom the surface as soon as possible after the first coverage by the roller, but not until the surface has set sufficiently to prevent excessive marking. Continue brooming, rolling, and supplemental spreading of aggregate until the surface is cured and rolled sufficiently to key and set the aggregate. In places not accessible to rollers, compact the aggregate with pneumatic tampers.

Remove aggregate that has become contaminated with foreign matter and replace with clean aggregate and reroll as directed. Maintain and protect the treated areas by use of barricades until properly cured.

3.3 APPLICATION OF SECOND COURSE

3.3.1 Bituminous Treatment

Apply the bituminous material for the second course within 48 hours after construction of the first course, weather permitting. Remove excess aggregate prior to the second application of bituminous material. If the treated surface is excessively moistened by rain, allow the surface to dry for such time as deemed necessary. Perform the second application of bituminous material in the manner specified in paragraph APPLICATION OF FIRST COURSE, including temperature and QUANTITY LIMITS.

3.3.2 Aggregate

Immediately following the second application of bitumen, spread aggregate conforming to the gradation and limits specified in paragraph QUANTITY LIMITS uniformly over the bituminous material and process in the manner specified for the first course.

3.3.3 Brooming and Rolling Second Course

Roll and broom the surface in the manner specified for the first course until a thoroughly bonded, smooth, even-textured surface is produced.

Sweep off the surface surplus aggregate and remove it prior to final acceptance.

SECTION 32 01 13.62 Page 10

3.4 APPLICATION TEMPERATURE OF MATERIALS

3.4.1 Emulsified Asphalt

Apply asphalt emulsions in the range of 90 to 160 degrees F.

3.4.2 Asphalt Cement

Apply asphalt cement in the range of 325 to 375 degrees F.

3.5 PROTECTION

Keep all traffic off surfaces freshly treated with bituminous material.

Provide sufficient warning signs and barricades so that traffic will not travel over freshly treated surfaces. Protect the treated areas from traffic for at least 24 hours after final application of bituminous material and aggregate, or for such time as necessary to prevent picking

up. Immediately prior to opening to traffic, roll the entire treated area with a self-propelled pneumatic-tired roller.

-- End of Section --

SECTION 32 01 13.62 Page 11

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 01 16.71

COLD MILLING ASPHALT PAVING

PART 1 GENERAL

1.1 DEFINITIONS

1.1.1 Scabbing/Delamination

1.1.2 Milling Machine

1.1.3 Milling Drum

1.2 TRAFFIC CONTROL

1.3 SCHEDULING

1.4 SUBMITTALS

1.5 QUALITY CONTROL

1.5.1 Qualifications

1.6 PROJECT/SITE CONDITIONS

1.6.1 Environmental Requirements

PART 2 PRODUCTS

2.1 EQUIPMENT

2.1.1 Cold Milling Machine

2.1.2 Pulverizing/Mixing Equipment

2.1.3 Cleaning Equipment

2.1.4 Straightedge

PART 3 EXECUTION

3.1 CONTRACTOR QUALITY CONTROL

3.1.1 General Quality Control Requirements

3.2 PROPOSED TECHNIQUES

3.3 MILLING OPERATION

3.3.1 Milling Machine and Drum Speed

3.4 TEST SECTION

3.5 MILLING TO PLAN GRADE

3.5.1 Grade Reference

3.5.2 Grade

3.6 SURFACE SMOOTHNESS

3.6.1 Straightedge Testing

3.7 ACCEPTABLE SURFACE TEXTURE

3.8 CLEAN-UP OPERATIONS

3.9 REMOVAL OF MILLED MATERIAL

SECTION 32 01 16.71 Page 1

SECTION 32 01 16.71

COLD MILLING ASPHALT PAVING

PART 1 GENERAL

Existing bituminous pavement may be recycled and reused as aggregate material subject to Contracting Officer's approval.

The asphalt concrete pavement to be recycled may be milled, pulverized insitu, or crushed as approved by the Contracting Officer. The recycled bituminous pavement shall have 100 percent of the recycled pavement material passing the 1 1/2-inch sieve.

The recycled asphalt pavement shall be thoroughly blended and uniformly mixed with new or recycled aggregate base course materials. The recycled asphalt portion shall be less than 50 percent of the total materials mixture, and shall be uniformly distributed in he aggregate.

Recycled materials shall not be used in the construction of the aggregate base course or aggregate subbase course layers. Milled materials may be used in the construction of partial subgrade replacement and subgrade improvement where approved by the Contracting Officer.

1.1 DEFINITIONS

1.1.1 Scabbing/Delamination

Scabbing or delamination is defined as the debonding or raveling of material which may be caused by either the condition of the existing underlying layers of asphalt mixture or the milling operation.

1.1.2 Milling Machine

Milling machines may also be known as pavement cold planers. Throughout this specification, any references to milling machines will also apply to pavement cold planers.

1.1.3 Milling Drum

Milling drums are upward-rotating drums or rotors which are outfitted with toolholders and teeth (picks). Milling drums perform different tasks dependent on the structure and design. The main tasks are cutting particles from the composite pavement, conveying removed material to the ejector, and ejecting removed material. Any reference to milling drum also applies to milling rotors.

1.2 TRAFFIC CONTROL

Provide all necessary traffic control during milling operations.

1.3 SCHEDULING

After completion of the preconstruction submittals, provide notice to the Contracting Officer a minimum of seven days prior to starting milling operations.

SECTION 32 01 16.71 Page 2

1.4 SUBMITTALS

Government approval is required for submittals with a "G" classification.

Submittals not having a "G" classification are for information only.] When used, a code following the "G" classification identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Equipment; G

Proposed Techniques; G

Quality Control Plan; G

Qualifications; G

SD-06 Test Reports

QC Monitoring

Test Section Results; G

1.5 QUALITY CONTROL

1.5.1 Qualifications

Provide documentation of at least five successful projects utilzing profile and performance milling. Documentation will include project references, equipment used (including scanning/sensing equipment), and company personnel associated with the project. Project documentation will also include if any equipment was owned or rented in the execution of the project.

1.6 PROJECT/SITE CONDITIONS

1.6.1 Environmental Requirements

Do not perform milling when there is accumulation of snow or ice on the pavement surface.

PART 2 PRODUCTS

2.1 EQUIPMENT

Maintain in a satisfactory working condition equipment, tools, and machines used in the performance of this work.

2.1.1 Cold Milling Machine

Use a self-propelled unit capable of removing the existing asphalt pavement to the depths and widths shown in the Contract. Milling machines will have a minimum cutting width of 6.5 feet. Use milling machines

SECTION 32 01 16.71 Page 3 designed and built exclusively for pavement milling operations and with sufficient power, traction and stability to accurately maintain depth of cut and slope. The equipment will be capable of operating the machine speed independently from the cutting equipment speed. Use milling machines capable of being equipped with dual longitudinal controls (operated from both sides of the machine). Use electronic control systems that will automatically control the longitudinal profile and cross slope of the milled surface. Accomplish this through the use of a mobile grade reference, an erected string line, joint matching shoe, slope control systems, or a combination of approved methods. When using a mobile grade reference, use systems capable of averaging the existing grade or pavement profile over at least 30 foot. Use a machine capable of leaving a uniform surface suitable for handling traffic without damage to the underlying pavement structure. Provide additional equipment necessary to satisfactorily remove the pavement in the area of manholes, water valves, curb, gutter and other obstructions. Provide milling machines with a means of effectively limiting the amount of dust escaping from the removal operations. If milling operations result in excessive fugitive dust, a silica dust suppressant is required at no additional cost to the Government. Milling equipment is not allowed to damage any part of the pavement structure that is not to be removed. Equip the milling machine with a lighting system for night work as required by the Contract.

Smaller width milling machines may be necessary for use around structures or other penetrations. Produce the same surface texture with small milling machines as with the large milling machines.

2.1.2 Pulverizing/Mixing Equipment

The pulverizing and mixing equipment must be self-propelled, four-wheel drive, and capable of pulverizing the soil in a single pass for the full depth to be stabilized. The mixing action must be capable of uniformly blending and mixing the required lime content with the subgrade soil if required. The rotor shall be capable of up or down cutting. The rotor shall be equipped with tap-in, knock-out, bullet-type teeth. The machine shall not cause damage to any part of the pavement structure that is not to be removed.

2.1.3 Cleaning Equipment

Provide cleaning equipment suitable for removing and cleaning loose material from the pavement surface. If using street sweeper type equipment, equip the street sweeper with a water tank, dust control spray assembly, both a pick-up and gutter broom, and a debris hopper.

2.1.4 Straightedge

Furnish and maintain at the site, in good condition, at least one 12 foot straightedge for each milling machine, for testing the finished surface.

Make the straightedge available for Government use. Use straightedges constructed of aluminum or other lightweight metal, with blades of box or box-girder cross section with flat bottom reinforced to insure rigidity and accuracy. Use straightedges with handles to facilitate movement on the milled surface.

SECTION 32 01 16.71 Page 4

PART 3 EXECUTION

3.1 CONTRACTOR QUALITY CONTROL

3.1.1 General Quality Control Requirements

Submit the Quality Control Plan a minimum of 30 days in advance of starting milling operations. The Quality Control Plan is specific to this specification and supplements the overall Quality Control Plan required by the project. Do not start milling operations until the Quality Control Plan has been approved. In the Quality Control Plan, address all elements which affect the quality of the milling operation including, but not limited to:

a. Type of cutting teeth and schedule for replacement.

b. The daily preventative maintenance schedule and checklist.

c. The proposed use of grade and slope controls (longitudinal and transverse).

d. The frequency of smoothness testing.

e. The process for milling distressed areas (scabbing/delamination).

f. Corrective procedures if the milling operation does not meet the specified texture or grade requirements.

g. Corrective procedures if the milled surface does not meet the specified minimum transverse or longitudinal smoothness when measured with a 12 foot straightedge.

3.2 PROPOSED TECHNIQUES

Submit the proposed techniques a minimum of 30 days in advance of starting milling operations. The proposed techniques will be project specific and address the following items:

a. The number, type(s) and size(s) of milling machines to be used.

b. The width and location of each cutting pass.

c. The number and types of brooms to be used with their location with respect to milling machines.

d. The proposed method for milling around existing structures such as manholes, valve boxes, and inlets.

e. The longitudinal and transverse typical sections for tie-ins at the end of the work day.

3.3 MILLING OPERATION

A minimum of seven days notice is required, prior to start work, for the Contracting Officer to coordinate the milling operation with other activities at the site. Make sufficient passes so that the designated area is milled to the profile, cross-slope, grade and elevations as indicated.

SECTION 32 01 16.71 Page 5

If scabbing or delamination occurs, the milled surface is unlikely to meet smoothness requirements. Notify the Contracting Officer for further direction when delamination or scabbing occurs. Repair or replace items damaged during milling operations such as manholes, valve boxes, utility lines, pavement that is torn, cracked, gouged, broken, or undercut, at no additional cost to the Government. Remove the milled material from the pavement and load into trucks.

3.3.1 Milling Machine and Drum Speed

Operate the milling machine and drum speed at appropriate speeds required to produce a uniform and acceptable surface texture per paragraph

ACCEPTABLE SURFACE TEXTURE.

3.4 TEST SECTION

The test section will be considered the first half-day of milling production. The test section will be a minimum of 1,000 feet long and one milling lanes wide. Evaluate the milled surface texture, grade, and smoothness as part of the test section. Make any changes necessary, including the speed of the milling machine, to produce the desired milled surface texture and smoothness. Any adjustments in grade should be approved by the Contracting Officer. Perform macrosurface texture acceptance testing at two random locations no closer than 500 feet. At a minimum, provide the following in the Test Section Results:

a. Overall visual appearance of the milled surface texture noting any scabbing or delamination concerns. Provide five or more photos of the cleaned surface texture with a scale showing the line spacing.

b. Speed of milling machine and drum (rpm).

c. Approximate station and offset of straightedge testing and measurements.

3.5 MILLING TO PLAN GRADE

3.5.1 Grade Reference

If string-line is utilized as a grade reference, place grade reference points at maximum intervals of 25 feet. Use reliable control points to set the grade reference. Support the grade reference so the maximum deflection does not exceed 1/16 inch between supports. If utilzing a surface model, ensure the model is reviewed and accepted by the Government prior to execution of the work.

3.5.2 Grade

Mill pavement such that the finished milled surface conforms to the lines, grades, and cross sections indicated in the contract. The maximum allowable deviation of the finished milled pavement surfaces from the established plan grade line and elevation is plus 0 inch minus 1/4 inch.

SECTION 32 01 16.71 Page 6

3.6 SURFACE SMOOTHNESS

3.6.1 Straightedge Testing

After completion of the final milling and clean-up, test the finished milled surface with the straightedge. Correct surface irregularities that depart from the testing edge by more than 1/4 inch. Straightedge testing will be performed continuously throughout production as a Quality Control check for the milled surface on a frequency longitudinally and transversely as approved in the Quality Control Plan. Skin patching for correcting low areas will not be permitted. If it is determined that Contractor operations resulted in deficient low areas, remove and replace area with a minimum 1 inch of asphalt leveling course as approved by the Government. Report approximate station and individual measurements taken and submit QC Monitoring to the Contracting Officer on a daily basis.

3.7 ACCEPTABLE SURFACE TEXTURE

Produce a milled surface texture with continuous, longitudinal milling striations with no gaps in the longitudinal striations. Gaps in the milling striations and cases where gaps create a diagonal pattern or chevron appearance are required to be milled again such that continuous, longitudinal striations are achieved.

If surface texture does not meet the minimum circle diameter specified, evaluate the cause and provide adjustment procedures detailing methods to the Government to meet specified macrosurface texture.

3.8 CLEAN-UP OPERATIONS

After milling to the depth shown in the Contract, sweep or vacuum clean the milled area with the approved equipment.

3.9 REMOVAL OF MILLED MATERIAL

Material that is removed will become the property of the Contractor and removed from the site.

SECTION 32 01 16.71 Page 7

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 01 17.61

SEALING CRACKS IN ASPHALT PAVING

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 QUALITY CONTROL

1.4 DELIVERY, STORAGE, AND HANDLING

1.5 ENVIRONMENTAL REQUIREMENTS

1.6 ACCEPTANCE

1.6.1 Crack Sealant

1.6.2 Test Section

PART 2 PRODUCTS

2.1 SEALANTS

2.2 BACKER ROD MATERIALS

2.3 EQUIPMENT, TOOLS, AND MACHINES

2.3.1 Routing Equipment

2.3.2 Air Compressor

2.3.3 Hand Tools

2.3.4 Crack Sealing Equipment

PART 3 EXECUTION

3.1 PREPARATION OF CRACKS

3.1.1 Cracks

3.1.1.1 Hairline Cracks

3.1.1.2 Small and Medium Cracks

3.1.1.3 Large Cracks

3.1.2 Existing Sealant Removal

3.1.3 Routing

3.1.4 Cleaning

3.1.5 Backer Rod Material

3.1.6 Rate of Progress of Crack Preparation

3.2 PREPARATION OF SEALANT

3.3 INSTALLATION OF SEALANT

3.3.1 Time of Application

3.3.2 Sealing the Crack

3.4 CLEANUP

3.5 QUALITY CONTROL PROVISIONS

3.5.1 Crack Cleaning

3.5.2 Crack Seal Application Equipment

SECTION 32 01 17.61 Page 1

SECTION 32 01 17.61

SEALING CRACKS IN ASPHALT PAVING

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C509 (2006; R 2021) Standard Specifiaction for Elastomeric Cellular Preformed Gasket and Sealing Material

ASTM D789 (2015) Determination of Relative Viscosity and Moisture Content of Polyamide (PA)

ASTM D6690 (2015) Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements

1.2 SUBMITTALS

Government approval is required for submittals with a "G" classification. Submittals not having a "G" classification are for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Equipment, Tools, And Machines; G

SD-03 Product Data

Manufacturer's Instructions; G

Crack Sealant; G

Backer Rod; G

SD-06 Test Reports

Laboratory Tests; G

1.3 QUALITY CONTROL

Test the crack sealant and backup materials for conformance with the referenced applicable material specification. Perform testing of the materials in an approved, independent laboratory; submit certified copies of the test reports for approval 14 days prior to the use of the materials

SECTION 32 01 17.61 Page 2 at the job site. Submit reports of all tests. Samples will be retained by the Government for possible future testing, if the materials appear defective during or after application. Furnish samples of materials, in sufficient quantity to be tested by the Government upon request.

Conformance with the test requirements of the laboratory tests specified will not constitute final acceptance of the materials. Final acceptance will be based on the performance of materials that have been satisfactorily installed.

1.4 DELIVERY, STORAGE, AND HANDLING

Inspect materials delivered to the job site for defects; unload, and store them with a minimum of handling to avoid damage. Provide storage facilities at the job site to protect materials from weather and maintain them at the temperatures recommended by the manufacturer.

1.5 ENVIRONMENTAL REQUIREMENTS

Apply the materials only when the ambient air temperature and the pavement temperature within the joint wall are at least 40 degrees F and rising.

Do not apply sealant if moisture is observed in the crack.

1.6 ACCEPTANCE

1.6.1 Crack Sealant

Inspect the crack sealant for proper cure and rate of set, tack free surface, bonding to the bituminous pavement, cohesive separation within the sealant, reversion to liquid, and entrapped air and voids. Remove sealants exhibiting any of these deficiencies, at any time prior to the final acceptance of the project, and replace as specified herein.

1.6.2 Test Section

Prior to the cleaning and sealing of the cracks for the entire project, construct a test section at least 200 feet long using the specified materials and approved equipment to demonstrate the proposed preparation and sealing of all cracks of the project. Following the completion of the test section and before any other crack is sealed, inspect the test section to determine that the materials and installation meet the requirements specified. If materials or installation do not meet requirements, remove the materials and reclean and reseal the cracks.

PART 2 PRODUCTS

2.1 SEALANTS

Provide crack sealant conforming to ASTM D6690, Type as suitable over the Performance Grade 64-10 temperature range for sealing cracks.

2.2 BACKER ROD MATERIALS

Provide backer rod material that is a compressible, nonshrinking, nonstaining, nonabsorptive material and nonreactive with the crack sealant. Use backer rod with a melting point temperature of at least 5 degrees F greater than the maximum pouring temperature of the sealant being used, when tested in accordance with ASTM D789. Use material that has a water absorption of not more than 5 percent by weight when tested in accordance with ASTM C509. Use backer rod material that is 25 percent

SECTION 32 01 17.61 Page 3

(plus or minus 5 percent) larger in diameter than the nominal width of the crack.

2.3 EQUIPMENT, TOOLS, AND MACHINES

Equipment, tools, and machines used in performance of the work are subject to approval by the Government. Maintain in a satisfactory working condition at all times.

2.3.1 Routing Equipment

Provide routing equipment which is a self-powered machine operating a power driven tool or bit specifically designed for routing bituminous pavements. Use a bit rotating about a vertical axis at sufficient speed to cut a smooth vertical-walled reservoir in the pavement surface and maintain accurate cutting without damaging the sides or top edges of the reservoir. Provide a router capable of following the trace of the crack without deviation. The use of rotary impact routing devices will not be permitted for cleaning cracks.

2.3.2 Air Compressor

Provide air compressor capable of furnishing not less than 150 cubic feet per minute and maintaining a line pressure of not less than 90 psi at the nozzle. Equip the compressor with filters that maintain the compressed air free of oil and water.

2.3.3 Hand Tools

Hand tools can be used, when approved, for removing defective sealant from cracks and repairing or cleaning the crack faces.

2.3.4 Crack Sealing Equipment

Provide unit applicators, used for heating and installing the hot-poured crack sealant materials, that are mobile and equipped with a double-boiler, agitator-type kettle with an oil medium in the outer space for heat transfer; a direct-connected pressure-type extruding device with a nozzle shaped for inserting in the prepared crack to be filled; positive temperature devices for controlling the temperature of the transfer oil and sealant; and a recording type thermometer for indicating the temperature of the sealant. Allow the sealant to circulate through the delivery hose and return to the inner kettle when not in use.

PART 3 EXECUTION

3.1 PREPARATION OF CRACKS

Immediately before the installation of the crack sealant, thoroughly dry and clean the cracks to remove oxidized pavement, loose aggregate and foreign debris. Prepare cracks as follows:

3.1.1 Cracks

3.1.1.1 Hairline Cracks

Cracks that are less than 1/4 inch wide do not need to be sealed.

SECTION 32 01 17.61 Page 4

3.1.1.2 Small and Medium Cracks

Rout cracks that are 1/4 to 1-1/2 inches wide to a nominal width 1/8 inch greater than the existing nominal width and to a depth not greater than 3/4 inch. Clean and dry using compressed air .

3.1.1.3 Large Cracks

Do not seal cracks that are greater than 1-1/2 inches wide. Refer to the drawings for repair methods for large cracks.

3.1.2 Existing Sealant Removal

Cut loose the in-place sealant from both crack faces and to a depth shown on the drawings. Remove sealant to a depth sufficient to accommodate any backer rod material that is required to maintain the depth of new sealant to be installed. Prior to further cleaning operations, remove all old loose sealant remaining in the crack opening by blowing with compressed air.

3.1.3 Routing

Perform routing of the cracks using a rotary router with a bit that is at least 1/8 inch wider than the nominal width of the crack to remove all residual old sealant (resealing), oxidized pavement and any loose aggregate in the crack wall.

3.1.4 Cleaning

Use compressed air or a heat lance to clean the crack faces and the pavement surfaces extending a minimum of 1/2 inch from the crack edges.

Use a multiple-pass technique until the surfaces are free of dust, dirt, old sealant residue, moisture, or foreign debris that might prevent the sealant material from bonding to the asphalt pavement. Use a heat lance when pavement temperature is less than 40 degrees F. Do not burn the pavement, a slight darkening is acceptable. Immediately follow the heat lance with the sealing operation.

3.1.5 Backer Rod Material

When required, use backer rod material in all cracks that otherwise would require excessive sealant or exceed the sealant reservoir depth. Insert the backer rod material into the lower portion of the crack as shown on the drawings. Place the backer rod so that the top of the backer rod is a maximum of 3/4 inch and a minimum width to depth ratio of 1 below the top of the pavement. Ensure that the backer rod material is placed evenly at the specified depth and is not stretched or twisted during installation.

3.1.6 Rate of Progress of Crack Preparation

Limit the stages of crack preparation, which include routing, air pressure or heat lance cleaning and placing of the backer rod material, to only that linear footage that can be sealed during the same day.

3.2 PREPARATION OF SEALANT

Do not heat hot-poured sealants in excess of the safe heating temperature recommended by the manufacturer, as shown on the sealant containers.

Withdraw and waste sealant that has been overheated or subjected to application temperatures for over 4 hours or that has remained in the

SECTION 32 01 17.61 Page 5 applicator at the end of the day's operation.

3.3 INSTALLATION OF SEALANT

Submit manufacturer's instructions 14 days prior to the use of the material on the project. Installation of the material will not be allowed until the instructions are received.

3.3.1 Time of Application

Seal cracks immediately following final cleaning and drying of the crack walls and following the placement of the backer rod material (when required). Place sealant only when cracks are dry. Reclean cracks that cannot be sealed under the conditions specified, or when rain interrupts sealing operations, and allow to dry or dry by mechanical means prior to installing the sealant.

3.3.2 Sealing the Crack

Immediately preceding, but not more than 50 feet ahead of the crack sealing operations, perform a final cleaning and drying with compressed air or heat lance. This distance can be increased if demonstrated and approved during the test section. Fill the cracks from the bottom of reservoir formed by the routing or the top of the backer rod up to 1/4 inch below the pavement surface. Remove excess or spilled sealant from the pavement by approved methods and discard it. Install the sealant in a manner which prevents the formation of voids and entrapped air. Make multiple passes with the applicator wand as necessary to obtain the specified sealant depth from the pavement surface. Do not use gravity methods or pouring pots to install the sealant material. Do not permit traffic over newly sealed pavement until authorized. Check sealed cracks frequently to ensure that the newly installed sealant is cured to a tack-free condition within 3 hours.

3.4 CLEANUP

Upon completion of the project, remove unused materials from the site and leave the pavement in a clean condition.

3.5 QUALITY CONTROL PROVISIONS

3.5.1 Crack Cleaning

Provide quality control provisions during the crack cleaning process to correct improper equipment and cleaning techniques that damage the bituminous pavement in any manner.

3.5.2 Crack Seal Application Equipment

Inspect the application equipment to ensure conformance to temperature requirements and proper installation. If evidence of bubbling, improper installation, and failing to cure or set are identified, suspend operations until causes of the deficiencies are determined and corrected.

SECTION 32 01 17.61 Page 6

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 01 17.62

PAVING FABRIC INTERLAYER

PART 1 GENERAL

1.1 REFERENCES

1.2 STATE STANDARD SPECIFICATIONS

1.3 SUBMITTALS

1.4 QUALITY CONTROL

1.4.1 Design Conformance

1.5 DELIVERY AND STORAGE

1.6 PROJECT/SITE CONDITIONS

1.6.1 Placement Conditions

1.7 ACCEPTANCE

1.7.1 Tolerances

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Asphalt Cement

2.1.2 Geosynthetic Paving Fabric

2.2 EQUIPMENT

2.2.1 Asphalt Distributor

2.2.2 Geosynthetic Paving Fabric Handling Equipment

2.2.3 Vacuum Sweeper

2.2.4 Miscellaneous Equipment

2.2.5 Condition of Equipment

PART 3 EXECUTION

3.1 PREPARATION

3.1.1 Cracks

3.1.2 Potholes

3.1.3 Surface Preparation

3.2 PAVING FABRIC INSTALLATION

3.2.1 Asphalt Binder

3.2.2 Paving Fabric Placement

3.2.2.1 Traffic Control

3.2.2.2 Additional Asphalt Binder

3.2.3 Asphalt Surface Treatment

SECTION 32 01 17.62 Page 1

SECTION 32 01 17.62

PAVING FABRIC INTERLAYER

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 288 (2021) Standard Specification for Geosynthetic Specification for Highway Applications

ASTM INTERNATIONAL (ASTM)

ASTM D4873/D4873M (2017) Standard Guide for Identification, Storage, and Handling of Geosynthetic Rolls and Samples

ASTM D6373 (2016) Standard Specification for Performance Graded Asphalt Binder

1.2 STATE STANDARD SPECIFICATIONS

Provide materials and workmanship specified herein with the reference State Standard specifications (SSS) in accordance with the referenced articles, sections and paragraphs of the standard except that contractual and payment provisions do not apply. Where the term "Engineer" is used, it means the Contracting Officer. Where the term "state" is used, it means "Federal Government."

1.3 SUBMITTALS

Government approval is required for submittals with a "G" classification. Submittals not having a "G" classification are for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-03 Product Data

Plant, Equipment, Machines, And Tools

SD-06 Test Reports

Asphalt Distributor Calibration Documentation

SD-07 Certificates

SECTION 32 01 17.62 Page 2

Asphalt Cement; G

Geosynthetic Paving Fabric; G

1.4 QUALITY CONTROL

1.4.1 Design Conformance

Provide an asphalt surface treatment conforming to the requirements of Section 32 01 13.62 ASPHALT SURFACE TREATMENT.

1.5 DELIVERY AND STORAGE

Deliver materials to job site in original unopened rolls, packages, cartons, bundles, or containers. Handle and store geosynthetic paving fabric in accordance with ASTM D4873/D4873M . Prevent damage to materials during loading, transporting, and unloading. Inspect materials for contamination. Protect geosynthetic materials against sunlight, UV radiation, moisture, rain, dust, or rodents. Replace defective or damaged materials. Remove rejected materials from Government property.

1.6 PROJECT/SITE CONDITIONS

1.6.1 Placement Conditions

Place geosynthetic paving fabric under the following conditions:

a. Ambient air temperature for asphalt cements above 50 degrees F and rising.

b. Dry pavement surface temperature above 40 degrees F and rising.

1.7 ACCEPTANCE

1.7.1 Tolerances

Acceptance of the paving fabric interlayer is based on compliance with the tolerances presented in Table 1. Remove and replace paving fabric interlayer represented by the failing tests or submit repair plan for approval.

TABLE 1

Attribute Tolerance

Asphalt Binder Application Rate Within specified range

Asphalt Binder Application Temperature Within specified range

Paving Fabric Overlap Maximum 6 inches

Paving Fabric Wrinkles Maximum 1 inch

SECTION 32 01 17.62 Page 3

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Asphalt Cement

Asphalt cement binder conforming to ASTM D6373, Performance Grade (PG) 64-10.

2.1.2 Geosynthetic Paving Fabric

Geosynthetic paving fabric conforming to AASHTO M 288, Type II. The numeric values in AASHTO M 288 are Minimum Average Roll Values (MARV) in the weaker principal direction.

2.2 EQUIPMENT

Submit list of proposed equipment to be used in performance of construction work, including descriptive data. Plant, equipment, machines, and tools used in the work are subject to approval. Maintain in a satisfactory working condition at all times.

2.2.1 Asphalt Distributor

Provide a distributor capable of spraying asphalt binder at the prescribed temperature and application rate without streaking, skipping, or dripping. Equip distributor with hand spray having single nozzle and positive shut-off valve. Check and clean the filters at the start of each day during the installation. Provide calibrated instruments to determine temperature of asphaltic binder in both the distributor and its application site as well as instrumentation for securing uniformity at the junction of the two loads.