General 1.01 Scope

Concrete paving with steel mesh or polypropylene fiber mesh as indicated.

1.02 Submittals

A. Prepare and submit the proposed concrete mix design to be used. Design mix is to be approved by the Owner’s Representative prior to commencing work. See Concrete Mix Design.

B. Upon request, provide a certificate from the manufacturer or supplier that materials designated by reference to COE, AASHTO, ASTM, or ACI standards meet the latest edition requirements of these agencies.

C. Test results of cores as may be required.

D. Sample areas as indicated in Section 3.01, C.

1.03 Quality Assurance

A. Qualifications: All Contractors or subcontractors performing work under this section shall be qualified to do such work and hold the appropriate registration, license, or other permit as required by state or local law.

B. Requirements of Regulatory Agencies: Contractor shall procure all permits and licenses and give all notices necessary and incidental to the due and lawful prosecution of the work. All building and land disturbance fees have been waived by the City.

C. Testing

1. Owner shall provide and pay for the services of an independent testing laboratory for conducting field testing and inspection.

2. The Contractor shall cooperate with laboratory personnel at all times.

3. In the event that the concrete does not meet the required strength to the satisfaction of the Owner’s Representative, the Contractor shall remove that portion of construction in question and rebuild it all at his/her own expense.

D. Performance Requirements

1. Place no surfacing on frozen or saturated subgrade.

Portland Cement Concrete Paving 32 1313 - 2 2. Wavy, undulating, or ponding surfaces will not be acceptable and must be

replaced at the Contractor’s expense.

E. Product Delivery, Storage, and Handling

1. Store cement and aggregate in such a manner as to prevent deterioration or contamination with foreign matter. Store each size of aggregate separately and in such a manner as to maintain segregation. Cement which has become caked, partially set, or otherwise deteriorated will be rejected. Any material which has become damaged or contaminated will be rejected.

2. No materials or lumber shall be stored within the fenced area of protected trees.

F. Materials

1. Materials designated by specific manufacturer’s trade names are approved, subject to compliance with the quality and performance indicated by the manufacturer.

2. Instructions and specifications published by the manufacturer of such materials are included in and are a part of these Specifications.

G. Concrete Mix Design

1. Establish concrete mix design proportions per ACI 318, Chapter 4.

2. Indicate type and quantities of material used, the fresh unit weight, slump air contact, aggregate analysis, dry weight of aggregates, saturated weight of aggregates, and comprehensive strength at 28 days.

3. Verify mix designs with results of a laboratory trial batch.

4. An independent testing laboratory shall verify that the materials used meet all applicable ASTM specifications.

5. Mix designs not conforming to the above will be rejected.

6. Payment for the design and verifying the concrete mix design will be by the supplier.

7. Submit concrete mix design with supporting data confirming compliance with the above.

8. Concrete mix shall include polypropylene fibers mixed with the above.

Portland Cement Concrete Paving 32 1313 - 3

1.04 Job Conditions

A. Contractor shall be familiar with the site, the Drawings, the Specifications, special provisions, and plan requirements and is responsible for calling any discrepancies or potential problems to the attention of the Owner’s Representative.

B. Protection

1. Contractor shall provide adequate protective measures such as barricades, flags, lights, signage/fence, bridging, or other measures to ensure the safety of passersby and the work itself. Such measures shall be in accordance with federal, state, or local law.

2. Contractor shall take special measures to prevent travel over concrete pavement until it has had sufficient time to cure.

C. Environmental Requirements: Excess or waste materials will not be allowed to accumulate on the site. No cleaning of tools or equipment will be permitted where the residue would be harmful to the construction, the soil, or plant materials.

D. Scheduling: Contractor shall coordinate his/her work with that of other Contractors to ensure efficient and orderly progress of the work.

E. Work in Public Right-of-Way: All concrete paving and aprons in public right-of-way are to conform to the standard requirements of the community.

F. Surveyor: Contractor shall provide the services of a registered surveyor to lay out the work and check the grades during its progress.

G. Construction Stakes: Construction stakes shall be set to mark the general location, alignment, elevation, and grade of this work. The Contractor shall assume full responsibility for dimension and elevations from such stakes.

Part 2 Products

NOTE:

All references to vendors and "approved manufacturers" are included for description of quality and content of the designated equipment/materials. Equivalent items may be accepted if they meet all standards of quality and purpose for the intended use, as determined by City of Cumming.

2.01 Materials

A. Fabric Steel: Cold drawn steel wire conforming to ASTM A 82 with the following exception: Galvanized wire shall be completely covered in a workmanlike manner with a coating of pure zinc of uniform thickness, so applied that it will adhere firmly to the surface of the wire. The minimum weight of zinc coating shall be 0.8 ounces of zinc per square foot of surface as determined by ASTM A 90.

Portland Cement Concrete Paving 32 1313 - 4 B. Fiber Mesh: Polypropylene fiber mesh.

C. Dowel Bars: One-inch smooth round, straight steel bars 18-inches long, one end coated with heavy grease and provided with approved tight-fitting metal sleeve.

D. Reinforcing Steel: ASTM A 615.

E. Cement

1. Conform to ASTM C 150, Type II (use one brand only).

2. Cement used shall conform to that cement on which the selection of concrete proportions was based.

3. Minimum Cement Content:

a. In areas exposed to a freeze-thaw cycle or the use of de-icing salts, concrete shall be produced with a minimum cement content of 560 pounds per cubic yard and an entrained air content of 6 percent ± 2 percent by volume.

b. In areas where freeze-thaw durability is not essential, concrete shall be produced with a minimum cement content of 520 pounds per cubic yard and an entrained air content of 6 percent ± 2 percent by volume.

F. Aggregate

1. Conform to ASTM C 33.

2. The maximum coarse aggregate size shall be not more than one-fourth of the slab thickness.

G. Admixtures: Air-entraining admixtures for concrete shall conform to ASTM C 260.

H. Water: All mixing water shall be clean and free from deleterious amounts of acids, alkalis or organic materials, pr ACI 318.

I. Retarder: “Rugasol” as manufactured by Sika Chemical Corporation or approved equal.

J. Curing Compound: Clear or translucent conforming to ASTM C 309.

K. Expansion Joint Material: Asphalt impregnated premolded fiber material of the size indicated on the plans and meeting ASTM D 1751.

L. Joint Sealer: Sonolastic Pavement Joint Sealer, or approved equal.

M. Polypropylene Fiber Admixture: 3/4-inch long fibers meeting ASTM C 1116-89 at the rate of 1-1/2 pounds of fibers per cubic yard of concrete. Mix per manufacturer’s recommendations.

Portland Cement Concrete Paving 32 1313 - 5 N. Construction or Contraction/Control Joint Material Alternate: Key-Loc Joint system

as manufactured by Form-A-Key Products Division, Louisville, Kentucky 40214 (1-800-662-5576). Approved equal may also be used in flat slabs for construction or contraction/control joints.

2.02 Mixes

A. Concrete

1. Concrete shall be “ready-mixed” meeting ASTM C94.

2. Concrete above ground where detailed shall develop minimum 3,500 psi at 28 days and be air-entrained, see plans.

3. Concrete below ground where detailed shall develop minimum 3,000 psi at 28 days and be air-entrained, see plans.

4. Concrete which has set prior to placement shall be discarded.

B. Concrete Slump

1. Minimum slump shall be 2-inches.

2. Maximum slump shall be 4-inches.

Part 3 Execution