A06_-_140L1721Q0025-Section_02730.pdf

AGGREGATE SURFACING

State Bridge Water System [3/21]

02730 - 1

SECTION 02730

PART 1: GENERAL

1.1 SUMMARY

A. Section Includes: This work shall consist of furnishing, placing and compacting a crushed aggregate surfacing material on a prepared surface.

PART 2: MATERIALS

2.1 GENERAL REQUIREMENTS

A. Crushed Aggregate: Aggregate shall consist of hard, durable particles or fragments of stone or gravel, crushed to the size and of the quality requirements for crushed aggregate materials normally used locally in the construction and maintenance of highways by Federal or State agencies and shall be according to AASHTO M 147. The aggregates comply with Colorado Department of Transportation (CDOT) Class 6.

B. General: A materials compliance submittal verifying the aggregate meets CDOT Class 6 shall be supplied prior to placing any material.

Aggregate shall be supplied from a commercially operated sand and gravel supplier and shall meet the Class 6 requirements from existing stockpiled material. Mixing of additional material(s) by the contractor to bring out of specified material into compliance shall not be allowed. Weighing of material shall be performed by an employee of the sand and gravel supply company. Weight tickets shall include the company supplier name, ticket number, project name, gross weight, tare weight, net weight, and time and date at time(s) of weighing for each truck load of material. Tare weight(s) of trucks shall be required on every load of aggregate supplied.

PART 3: EXECUTION

3.1 CONSTRUCTION REQUIREMENTS

A. Placing: Place approximately 6” of crushed aggregate along the completed waterline trench within the existing road and parking areas.

B. Final Grading: Blend the finished grade of the new construction into the existing BLM road/parkingareas finished grade surface. Grade to a uniform and level grade between surfaces.

C. Thickness Requirements: The thickness of the completed course shall not vary more than 1/2-inch.

D. Compacting: Immediately following final spreading and smoothing, each layer shall be compacted full width. Apply water as necessary to obtain maximum compaction.

State Bridge Water System [3/21]

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3.2 AGGREGATE VOLUMES

A. Aggregate Surfacing: Surfacing material is estimated to be approximately 30 ton. This does not include bedding material volumes required for the asphalt shoulder.

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT

A. Units: The quantity to be paid for will be the number of tons of material placed within the specified work area, compacted and accepted in the completed course. Aggregate used for bedding material will not be included in weight total for the aggregate surfacing. Costs associated with bedding material will be included in the bid prices of other bid items. Weighing of material shall be at Contractor's expense. A weight receipt for each load of material shall be furnished by the Contractor.

4.2 BASIS OF PAYMENT

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

Pay Item Pay Unit

02730(1) Aggregate Surfacing, 30 Ton . . . . . . . . . . . . . Ton

END OF SECTION