6-Division 32 - Exterior Improvements.pdf
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- Attached to
- Kings Grant Pump Station Upgrade - Rebid
- Solicitation number
- Not on record
- Issued by
- Chester County, Claysville Borough, Pennsylvania
About this file
This is a specification document for exterior paving improvements as part of the King's Grant Pump Station Upgrades project managed by the Caln Township Municipal Authority in Chester County, Pennsylvania. The work includes temporary paving, permanent paving, and driveway restoration activities required to restore paved surfaces affected by construction operations. The project references Pennsylvania Department of Transportation standards and specifications (Publications 408, 27, 37, and 203) for all bituminous and concrete paving materials, aggregates, and work zone traffic control. Key execution requirements include daily temporary paving with coarse aggregate backfill to a minimum 2-inch compacted thickness using 5-ton trench rollers, maintenance of temporary paving within 24 hours of written notification, and a mandatory 30-day curing period between base/binder course installation and wearing course placement. Permanent paving requires 1-foot minimum cutbacks with straight joint lines, individual compaction of each course using appropriate equipment (5-ton rollers for base and binder courses, 10-ton rollers for wearing course), and matching of existing road profiles. The specification establishes strict tolerances including maximum 1/4-inch flatness variation measured with a 10-foot straight edge, compacted thickness within 1/4 inch of design specifications, and elevation variation not exceeding 1/2 inch.
Driveway restoration requirements vary by surface type, including 6-inch reinforced concrete for Portland cement surfaces, bituminous restoration in kind with minimum 1-1/2-inch wearing course over 6-inch aggregate base, 6-inch 2A stone backfill for earth driveways, and restoration in kind for stone or gravel surfaces. Brick and cobblestone driveways must be restored using like materials on 4-inch wet sand beds with matching pattern and spacing. The contractor must maintain all restored paving surfaces throughout the contract maintenance period to the satisfaction of the Resident Project Representative and relevant municipal and state road departments, restore any pavement markings in their former locations, and repair all existing paving damaged by contractor operations at contractor expense. Traffic control measures must comply with Section 01 55 26 requirements and obtain pertinent permits from PennDOT and local municipal agencies having jurisdiction.
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CALN TOWNSHIP MUNICIPAL AUTHORITY
KING’S GRANT PUMP STATION UPGRADES
MARCH 2026
32 12 23 - RESTORATION OF PAVED SURFACES
MARCH 2026 32 12 23 - 1
PART 1 - GENERAL
1.01 SECTION DESCRIPTION
A. The Work of This Section Includes
1. Temporary Paving
2. Permanent Paving
3. Driveway Restoration
B. The Details on the Drawings note the specific paving requirements.
1.02 RELATED SECTIONS
A. Related Work specified elsewhere
1. Section 31 23 33: Excavation, Backfill & Compaction
1.03 QUALITY ASSURANCE
A. Referenced Standards
1. Pennsylvania Department of Transportation:
a. Publication 408 Specifications
b. Publication 27 - Specification for Bituminous Mixtures (Bulletin 27)
c. Publication 37 - Specification for Bituminous Materials (Bulletin 25)
d. Publication 203 - Work Zone Traffic Control
1.04 SUBMITTALS
A. Certificates
1. Submit certification from bituminous and aggregate suppliers attesting that materials conform to the State Specifications in accordance with Section 01 33 00.
1.05 JOB CONDITIONS
A. Control of Traffic
1. Take measures to control traffic during repaving operations. Do not allow traffic on repaved areas until authorized by the Resident Project Representative.
2. Employ traffic control measures in accordance with the requirements of Section 01 55 26 including pertinent permits by PennDOT and local municipal agencies having jurisdiction.
B. Restore existing paving outside the limits of the Work, that has been damaged by Contractor's operations, to its original condition at the expense of Contractor.
PART 2 - PRODUCTS
2.01 CONCRETE
A. As directed by Engineer.
2.02 BITUMINOUS PAVING MATERIALS AND AGGREGATES
MARCH 2026 32 12 23 - 2
A. Bituminous Concrete Base Course: PennDOT BCBC (Publication 408).
B. Binder Course: PennDOT Superpave (Section 409 of Publication 408).
C. Wearing Course: PennDOT Superpave (Section 409 of Publication 408).
D. Tack Coat: Bituminous Material - Emulsified Asphalt (E-1, E-6, E-8) (Section 702 of
Publication 408).
E. Joint Seal: Hot, bituminous material (Class AC-20) (Section 702 of Publication 408).
F. Coarse Aggregate: PennDOT No. 2A (Section 703 of Publication 408).
PART 3 - EXECUTION
3.01 TEMPORARY PAVING
A. Backfill trenches each day with coarse aggregate in accordance with the Drawings and Publication 408 requirements.
B. All trenches situated within paved areas shall be restored with temporary paving material by the end of each work day. Compact to required minimum thickness of 2-inches with trench roller (5-ton).
C. Continuously maintain temporary paving to the satisfaction of the Resident Project
Representative, the Township, and PennDOT. All paved areas in need of repair shall be addressed within 24 hours of written notification.
3.02 PERMANENT PAVING
A. Trim existing paving with minimum one (1) foot cutbacks to remove damaged areas. Cut straight joint lines and right-angle offsets.
B. Remove temporary paving material. Construct permanent base and surface courses to the required compacted thicknesses shown on the Drawings, (match existing pavement section if Drawings do not specify proposed pavement section) and in accordance with Publication 408 Specifications. Construct wearing course to match existing road profile. Wearing course pavement shall not be installed until at least 30 days after installation of base course and/or binder course paving. Compact each course individually using a trench roller (minimum 5-ton) for the base course and binder course and a 10-ton roller for the wearing course.
C. The horizontal extents and vertical pavement depths for pavement restoration shall be in strict conformance with the notes and details on the Drawings. The pavement restoration extents shall also be coordinated with Engineer in the field.
D. Where proposed asphalt paving adjoins existing asphalt paving, seal the joint with hot bituminous material in accordance with Publication 408 Specifications.
E. Replace pavement markings in their former location which were covered or destroyed.
F. Maintain permanent paving to the satisfaction of the Resident Project Representative and the local municipal and State road departments having jurisdiction throughout the Contract maintenance period.
MARCH 2026 32 12 23 - 3
3.03 DRIVEWAYS
A. Trim concrete and bituminous driveway surfaces to remove damaged areas. Saw cut straight joint lines parallel to the centerline of the trench. Cut offsets at right angles to the trench centerline.
B. Restore existing portland cement concrete driveways with a 6" layer of concrete reinforced with 6 x 6 10/10 wire mesh.
C. Restore existing blacktop driveways in kind (i.e. match existing pavement section depth), except that wearing course shall be not be less than 1-1/2” depth, placed over 6" layer of 2A aggregate.
D. Restore earth driveways with a 6" layer of 2A stone backfill.
E. Restore stone or gravel driveways in kind.
F. Restore brick driveways with like bricks placed on a 4" thick wet sand bed. Place bricks in like pattern and spacing.
G. Restore cobblestone driveways with cobblestone placed on a 4" thick wet sand bed. Place cobblestones in like pattern and spacing.
3.04 HIGHWAY AND STREET SIGNAGE
A. Reinstall any signage removed to allow for construction activities at the original location.
3.05 TOLERANCES
A. Flatness: Maximum variation of 1/4 inch measured with 10-foot straight edge.
B. Compacted Scheduled Thickness: Within 1/4 inch of design thickness.
C. Variation from True Elevation: Within 1/2 inch.
3.06 PAVEMENT STRIPING
A. All pavement striping impacted by construction shall be restored.
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