32 12 16 - Asphalt Paving.pdf

32 12 16 - ASPHALT PAVING

Herbert, Rowland & Grubic, Inc. 32 12 16 - 1 007297.0444

SECTION 32 12 16 - ASPHALT PAVING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Aggregate subbase.

2. Aggregate base and wearing course.

B. Related Requirement:

1. Section 31 23 23 - Fill: Compacted subbase for paving.

2. Section 32 11 23 - Aggregate Base Courses: Compacted subbase for paving.

1.2 REFERENCE STANDARDS

A. Pennsylvania Department of Transportation:

1. Publication 19 – Field and Laboratory Test Methods, latest edition.

2. Publication 408 - Specifications, latest edition, as amended.

3. Publication 72M (Roadway Construction Standards) latest edition, as amended.

1.3 SUBMITTALS

A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.

B. Product Data:

1. Submit product information for asphalt and aggregate materials.

2. Submit mix design with laboratory test results supporting design.

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

1.4 QUALITY ASSURANCE

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

B. Obtain materials from same source throughout.

C. Perform Work in accordance with West Manchester Township Construction and Materials Specifications Manual.

PART 2 - 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.

Herbert, Rowland & Grubic, Inc. 32 12 16 - 2 007297.0444

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. 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 408, Section 703.2.

PART 3 - EXECUTION

3.1 PREPARATION

A. Existing Pavement Removal:

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

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

3.2 EXAMINATION

A. Section 01 73 00 - Execution Requirements: Requirements for installation examination.

B. Verify utilities indicated under paving are installed with excavations and trenches backfilled and compacted.

C. Verify compacted subgrade subbase is dry and ready to support paving and imposed loads.

D. Verify gradients and elevations of base are correct.

E. Verify manhole frames are installed in correct position and elevation.

3.3 INSTALLATION

A. General: Restore streets, shoulders, driveways, parking areas and other areas according to the Work Order. All work shall conform to PennDOT Publication 408 for materials, placement, and compaction.

B. Temporary Surfacing:

1. Temporary pavement shall be installed as directed by the Engineer 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 Work Order.

2. Temporary surfacing shall be maintained in a safe, drivable condition at all times.

Herbert, Rowland & Grubic, Inc. 32 12 16 - 3 007297.0444

3. Contractor shall be responsible for the removal and disposal of the temporary surfacing to the grade required for the placement of the final sub-base, 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 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 unless otherwise approved by Owner or Engineer. In the event that environmental conditions do not allow for placement of permanent surfacing within the ten days specified, temporary pavement 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, and other facilities or structures prior to final surfacing.

F. Asphalt Materials:

1. Superpave Wearing Course Asphalt Mixture Design, placement, and compaction:

In accordance with PennDOT Publication 408, Section 413.

2. Superpave Base Course Asphalt Mixture Design, placement, and compaction: 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 in PennDOT Section 210.

b. Install subbase to underside of base course as specified.

c. Subgrade shall be proof rolled and unstable areas undercut as directed by Engineer.

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.

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.

Herbert, Rowland & Grubic, Inc. 32 12 16 - 4 007297.0444

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 twelve (12) months 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 – See Work Order.

END OF SECTION