306.01 DESCRIPTION. Scarify, shape, and compact existing roadbed
to form a subbase or base course in accordance with these specifications, and in conformity with the lines, grades, depth, and cross-section shown on the plans or established. Quality assurance requirements shall be as specified in the latest edition of the Department’ s publication titled Application for Quality Assurance Specifications for Embankment and Base Course.
306.02 CONSTRUCTION REQUIREMENTS. Scarify existing
materials for the full width of roadbed and a minimum depth of 6 inches, shape to the required section, and uniformly compact to at least 95 percent of maximum dry density for subbase, and 98 percent for base, as determined in accordance with DOTD TR 401 and TR 415 or TR 418. Assure that the scarified, shaped, and compacted roadbed has a smooth, uniform, closely-knit surface, free from ridges, waves, depressions, or loose material. Do not scarify the roadbed in excess of one mile in advance of compacting the roadbed. Prime the compacted roadbed in accordance with Section 505.
306.03 MAINTENANCE OF COMPACTED ROADBED. Protect the
compacted roadbed from damage due to either public traffic or construction operations, and maintain the roadbed in satisfactory condition at all times, including the asphalt prime coat. Repair all damage immediately at no direct pay.
306.04 MEASUREMENT. The quantities of scarifying and compacting
roadbed for payment will be the design lengths or areas as specified in the plans and adjustments thereto. Design quantities are based on the horizontal dimensions of the roadbed shown on the plans. Design quantities will be adjusted when the engineer makes changes to adjust to field conditions, if plan errors are proven, or when design changes are necessary.
306.05 PAYMENT. Payment for scarifying and compacting roadbed
will be at the contract unit price, which includes asphalt prime coat. Payment adjustments will be applied for specification deviations of asphalt prime coat materials in accordance with Section 505 and Section 1002. The Materials and Testing Section will provide the payment adjustment percentage for properties of asphalt materials. Payment will be made under: Item No. Pay Item Pay Unit 306-01 Scarifying and Compacting Roadbed ___ in Thick Mile 306-02 Scarifying and Compacting Roadbed ___ in Thick Square Yard
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