2212Drainable Aggregate Base

2212.1DESCRIPTION

This Work consists of constructing a Drainable Aggregate base on a finished base or filter Layer.

2212.2MATERIALS

2212.3CONSTRUCTION REQUIREMENTS

Forms and the Grading and Base Manual are available on the Grading and Base Website. Unless otherwise designated, test procedures are in the Grading and Base Manual . Repair Structures damaged by Contractor operations or negligence. A General Before placing the Drainable base, shape the underlying surface in accordance with the Contract and 2112.3E, “Tolerances.” Maintain a uniform gradation during placement. B Contractor Quality Control (QC) Testing Test according to the Schedule of Materials Control. Certify Materials on Form G&B-104. Material placed without certifications is unauthorized Work in accordance with 1512, “Unacceptable and Unauthorized Work.” C Placing and Compacting Provide moisture for compaction for Drainable stable base (DSB). Provide placement Equipment meeting the following requirements:

Vibratory rollers are not allowed. Do not allow traffic on the Drainable base after final placement and compaction. Meet the Quality Compaction requirements of 2106.3G.2, “Quality Compaction.” Maintain drainage. Construct the Aggregate Layer to ±0.05 feet of the profile and cross-section as required by the Contract in accordance with 2112, “Subgrade Preparation.” Maintain the surface, quality, integrity, and properties of the Aggregate Material in each Lift until the next Lift or Layer is placed. D Department Quality Assurance (QA) Testing Test according to the Schedule of Materials Control. Sample and test using the random sampling method in the Grading and Base Manual ; additional samples and tests may be taken to delineate visually indicated Material failures. Retest corrected Material. Verify compaction per 2106.3G.2, “Quality Compaction.”

2212.4METHOD OF MEASUREMENT

Measure the Material in accordance with 1901, “Measurement of Quantities.”

2212.5BASIS OF PAYMENT

The Contract Unit Price for the accepted quantities of Drainable Aggregate Base includes the costs of production, testing, placement, and compaction. The Department will pay for Drainable Aggregate base on the basis of the following schedule: Item No. Item Unit

2212.507 Drainable Aggregate Base, Type (*) (CV) cubic yard

* Specify Type either OGAB or DSB.