4-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 Specifications Section document for the King's Grant Pump Station Upgrades project, prepared for the Caln Township Municipal Authority in Pennsylvania, detailing requirements for exterior improvements including paved surface restoration. The project scope encompasses temporary paving, permanent paving, and driveway restoration work, with detailed requirements aligned to Pennsylvania Department of Transportation standards and specifications. The work includes trimming and restoration of existing paved surfaces, installation of bituminous concrete base courses, binder courses, and wearing courses, with specific compaction and thickness requirements noted on project drawings. Temporary paving must be installed daily in trenches using coarse aggregate and maintained to a minimum 2-inch thickness, with all repairs completed within 24 hours of notification. Permanent paving installation requires a minimum 30-day cure period between base and wearing course applications, with wearing courses compacted using 10-ton rollers and sealed with hot bituminous material. Driveway restoration specifications vary by existing surface type, including concrete driveways requiring 6-inch reinforced concrete layers, blacktop driveways restored with matching sections, and specialty surfaces such as brick and cobblestone requiring specific sand bed preparation and pattern replication.
The specifications establish strict flatness tolerances of 1/4 inch maximum variation measured with a 10-foot straightedge and require compacted thickness within 1/4 inch of design specifications. All materials must comply with Pennsylvania Department of Transportation Publications 408, 27, 37, and 203, with suppliers required to provide certification of compliance. Bituminous material suppliers and aggregate suppliers must submit certificates attesting to conformance with state specifications. The contractor is responsible for traffic control measures in accordance with PennDOT and local municipal agency requirements, including obtaining necessary permits. The contractor must restore any existing paving damaged during construction operations at its own expense and maintain all permanent paving to the satisfaction of the Resident Project Representative and applicable state and local road departments throughout the contract maintenance period. Pavement markings must be reinstalled in their original locations, and all signage removed for construction must be reinstalled at original locations upon completion.
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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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