32 12 16 - Asphalt Paving.pdf

32 12 16 – Asphalt Paving

1.0 General

1.1 Section Includes

A. Pavement surfacing.

B. Related improvements.

1.2 References

A. The "PennDOT Sections" noted herein refer to sections contained in the current

Commonwealth of Pennsylvania Department of Transportation Specifications

Publication 408, as supplemented or revised. The references pertain only to materials, construction, equipment, methods and labor. The payment provisions do not apply to

Work to be performed under this Contract. All Work shall be completed in accordance with the applicable PennDOT standards, supplements, and interims unless otherwise noted.

B. Commonwealth of Pennsylvania Department of Transportation (PennDOT) Publication

408, latest edition:

1. Section 212 – Geotextiles.

2. Section 313 – Superpave Asphalt Mixture Design, Standard Construction, Base

Course.

3. Section 350 – Subbase.

4. Section 413 – Superpave Mixture Design, Standard and RPS Construction of Plant-

Mixed Asphalt Courses with Percent Within Limits and LTS Testing (PWL-LTS).

5. Section 460 – Asphalt Tack Coat.

6. Section 470 - Asphalt Seal Coat.

7. Section 491 – Milling of Asphalt Pavement Surfaced.

8. Section 492 – Profile Milling of Asphalt Pavement Surfaced.

9. Section 735 – Geotextiles.

10. Section 960 – Hot Thermoplastic Pavement Markings.

11. Section 962 – Waterborne Pavement Markings.

C. Commonwealth of Pennsylvania Department of Transportation Standards for Roadway

Construction, Publication 72M, latest edition.

D. Commonwealth of Pennsylvania Department of Transportation Bulletin 15.

E. Commonwealth of Pennsylvania Department of Transportation Bulletin 25.

F. Commonwealth of Pennsylvania Department of Transportation Bulletin 27.

G. Commonwealth of Pennsylvania, Pennsylvania Code, Title 67, Transportation, Department of Transportation, Chapter 459, Occupancy of Highways by Utilities, as supplemented or revised.

H. Commonwealth of Pennsylvania, Pennsylvania Code, Title 67, Transportation, Department of Transportation, Chapter 212, Official Traffic Control Devices.

I. Commonwealth of Pennsylvania Department of Temporary Traffic Control Guidelines

Publication 213.

1.3 Definitions

A. Street: Unless otherwise specifically qualified herein, the term "Street" as used in this

Section shall be understood to mean a street, highway, avenue, boulevard, road, alley, lane, driveway, parking lot, or any other area used as a way for vehicles.

1.4 Submittals

A. Submit under provisions of Section 01 33 00 – Submittal Procedures.

B. Certificates: Furnish certification from asphalt and aggregate producer attesting that materials conform to requirements of PennDOT Specifications.

C. Material Slips: Furnish certification of the amount of materials utilized from the producer in accordance with PennDOT Specifications.

1.5 Quality Assurance

A. Source Quality Control:

1. Use materials conforming to PennDOT Publication 408, latest edition and supplementary bulletins thereto.

2. The quality of the Work shall be maintained by using the products of a qualified hot mix asphalt producer and qualified plant operating workmen.

3. The hot mix asphalt producer shall be a bulk producer regularly engaged in production of hot-mix, hot-laid superpave mixture design hot mix asphalt conforming to the standards referenced herein.

B. Workmen Qualifications:

1. Provide at least one person thoroughly trained and experienced in the skills required who readily understands the design and is completely familiar with the application of superpave mixture design hot mix asphalt paving work. Said person shall be present at all times during progress of hot mix asphalt paving work and shall direct the performance of said work.

2. For actual finishing of hot mix paving surfaces and operation of the equipment, use only personnel thoroughly trained and experienced in the skills required.

C. Manufacturer Qualifications: A paving-mix manufacturer registered with and approved by PennDOT.

D. Requirements of Regulatory Agencies:

1. Removal, protection and replacement of paving on state highways must be performed in accordance with the requirements of the Commonwealth of

Pennsylvania, Pennsylvania Code, Title 67, Transportation, Department of

Transportation, Chapter 459, Occupancy of Highways by Utilities, latest edition.

2. Removal, protection and replacement of paving on roadways other than state highways must be performed in accordance with the requirements of the municipality in which the Work is performed. The Contractor is responsible to meet the requirements of all permits and approvals from the municipality.

3. Employ traffic control measures in accordance with PennDOT, Title 67, Chapter

212.

1.6 Job Conditions

A. Protection:

1. Protect paved surfaces outside of the pavement removal limits as indicated on

Contract Drawings. Repair pavement outside removal limits damaged by construction operations to PennDOT or Municipal Specifications at no additional expense to Owner.

2. Use all means necessary to protect and maintain pavement materials before, during, and after installation. Protect installed Work and materials of all other contractors.

B. Environmental Requirements:

1. Do not install aggregate courses when ambient temperature is below or is expected to fall below freezing.

2. Do not use aggregate containing frost nor place aggregate courses on frozen subgrade.

3. Terminate placement of asphalt mixtures or courses between October 31, and do not resume placement prior to April 15. Placement of asphalt mixtures or courses between the dates referenced above requires prior approval from PennDOT on

State Routes, and from the City of Harrisburg on City Streets.

4. Do not place asphalt paving mixtures or courses when surfaces are wet or when the temperature of either air or the surface on which the mixture or course is to be placed is 40 Deg F or lower. When work is halted because of weather conditions, limited quantities en route to the Project to be placed, if permitted by the Engineer.

2.0 Products

2.1 Materials

A. Asphalt Materials:

1. Asphalt Cement: PG 64S-22 conforming to PennDOT Bulletin 25.

2. Asphalt Rubber Sealing Compound: Conforming to PennDOT Bulletin 25.

3. Superpave Wearing Course Asphalt Mixture Design: In accordance with PennDOT

Publication 408, Section 413.

4. Superpave Base Course Asphalt Mixture Design: In accordance with PennDOT

Publication 408, Section 313.

5. Superpave Binder Course Asphalt Mixture Design: In accordance with PennDOT

Publication 408, Section 413.

6. Asphalt Tack Coat: In accordance with PennDOT Publication 408, Section 460.2.

B. Aggregate Subbase: Type C or better, No. 2A, Section 703.2, placement per Section

350.

C. Aggregate Subbase Repair: AASHTO No. 1, in accordance with PennDOT Publication

408, Section 703.2.

D. Traffic Paint - State Routes: Conforming to PennDOT Publication 408, Sections 960.2 and 962.2.

E. Traffic Paint - City Street Routes: - Confirming to PennDOT Publication 408, Section

960 Hot Thermoplastic Pavement Markings.

F. Geotextile: Class 4, Type B, conforming to PennDOT Section 212.3.

G. Traffic Loop Sensor: Any Work to replace/repair traffic loop sensors shall be completed in accordance with City of Harrisburg or PennDOT requirements.

3.0 Execution

3.1 Preparation

A. Refer to the pavement details on the Drawings for schedule of materials and thicknesses.

B. Existing Pavement Removal.

1. PennDOT and Municipal Pavement

a. Saw cut existing pavement using a mechanical saw to neat lines equidistant from the centerline of the trench.

b. Remove pavement to width equal to maximum excavated trench width plus not less than one foot on each side of the trench.

c. If roadway is removed or disturbed for a greater width without written authorization of the Engineer, the Owner will require the Contractor to replace such pavement without compensation.

C. Milling of Existing Pavement (where required).

1. Comply with PennDOT Pub 408, Sections 491 and 492.

3.2 Examination

A. Verify that backfill to surfacing subgrade as specified in Section 31 23 33 – Trenching and Backfilling for Utilities, has been properly completed.

B. Verify that subgrade is dry and in suitable condition to begin paving.

C. Proof-roll subgrade below pavements with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding in accordance with PennDOT Pub.

408, Section 210.3, if required by Engineer. Do not proof-roll wet or saturated subgrades.

D. Excavate soft spots, unsatisfactory soils, and areas of excessive pumping or rutting, as determined by Engineer, and replace with AASHTO No. 1 coarse aggregate lined with geotextile material or other means as directed by Engineer.

E. Proceed with paving only after unsatisfactory conditions have been corrected.

3.3 Installation

A. General: Restore streets, shoulders, driveways, parking areas and other areas according to details shown on the Contract Drawings and the Restoration Schedule.

B. Temporary Surfacing:

1. Temporary pavement shall be installed as directed by the Engineer or Owner in the event where permanent pavement cannot be placed due to the weather limitations set forth herein for the placing of asphalt material for the permanent base and surface courses. The temporary surface shall be as specified in the Restoration

Schedule.

2. Contractor shall be responsible for the removal and disposal of the temporary surfacing to the grade required for the placement of the final subbase, base, and surface at the specified depths.

C. The Contractor shall be responsible for the maintenance and protection of all surfacing, as well as manholes, frame and covers, valve boxes, and other facilities or structures located within the areas of the roadway reconstruction until such time as that the permanent pavement or surface can be placed. Permanent surfacing must be placed no later than ten (10) days following the placement of base course paving. In the event that environmental conditions do not allow for placement of permanent surfacing within the ten (10) days specified, permanent surfacing must be placed as soon as conditions allow.

D. Prior to placement of final surfacing, the Contractor, Owner, and Engineer shall inspect all areas to be restored. The Contractor shall be responsible for any replacement of material, regrading, or addition of material deemed necessary by the Engineer in any areas found to be unacceptable for receipt of final surfacing.

E. The Contractor shall be responsible for any necessary adjustments to grade for manholes, frame and covers, valve boxes and other facilities or structures prior to final surfacing.

F. Asphalt Materials:

1. Superpave Wearing Course Asphalt Mixture Design: In accordance with PennDOT

Publication 408, Section 413.

2. Superpave Base Course Asphalt Mixture Design: In accordance with PennDOT

Publication 408, Section 313.

3. Asphalt Tack Coat: In accordance with PennDOT Publication 408, Section 460.3.

4. Aggregate Subbase: Construct and place in accordance with the requirements of

PennDOT Section 350.3:

a. Install on prepared subgrade as specified Section 31 23 33 – Trenching and

Backfilling for Utilities and in PennDOT Section 210.

b. Install subbase to underside of base course as specified in Section 31 23 33 –

Trenching and Backfilling for Utilities.

5. Asphalt Rubber Sealing Compound: Apply according to PennDOT Bulletin 25. Use to seal joints between existing and new pavements, new pavement and curbing, and new pavement and manhole frame and covers, valve boxes, etc.

6. Roadway Traffic Lines and Markings:

a. Match existing pavement marking material type. Apply in accordance with

PennDOT Sections 960 and 962. Provide satisfactory barrier cones for at least

30 minutes, or until paint is dry and track free from vehicular traffic. Repaint marked or damaged areas. Pavement marking placement on the state highway shall conform to TC-8600, latest edition.

b. The City of Harrisburg requires that all pavement markings - of all types, and regardless whether longitudnal or transverse to the direction of travel - on City streets be hot thermoplastic, conforming to the requirements of PA DOT Pub.

408 Section 960.

3.4 Clean-Up

A. During construction, surfaces of all areas including, but not limited to, roads, streets, and driveways shall be maintained on a daily basis to produce a safe, desirable, and convenient condition:

1. Streets shall be swept and flushed after backfilling, and recleaned as dust, mud, stones and debris caused by the Work, or related to the Work again accumulates.

2. Failure of the Contractor to perform this Work shall be cause for the Engineer to order the Work to be done by others, and backcharge all costs to the Contractor.

B. Repair or Correction of Unsatisfactory Conditions: All unsatisfactory conditions resulting from the Work shall be corrected.

C. Dust Control: Provide effective dust control by sprinkling water, by the use of calcium chloride or by any other methods approved by Engineer. Use dust control measures where, when and in a manner required by Engineer.

3.5 Maintenance

A. Continuously maintain temporary paving without additional compensation until it is replaced with permanent paving.

B. Maintain without additional compensation, such Work of this Section done under this

Contract for a period of twenty-four (24) months for pavement within the City of

Harrisburg and PennDOT rights-of-way after the date of Owner’s approval of the Final

Completion Certificate issued by Engineer, including the repair or removal and replacement of such Work which has failed or has been damaged or wherever surface depressions have been developed. Materials and methods used to repair or replace such Work shall conform to the applicable requirements of this Section.

C. Should Contractor fail to perform required maintenance or repairs within three days after written notice from Owner or Engineer, the Owner may perform such maintenance or repairs and deduct the cost thereof from any monies due or to become due Contractor.

3.6 Restoration Schedule

A. See Section 31 23 33 – Trenching and Backfilling for Utilities, and the Contract

Drawings.

END OF SECTION