Article 1 — Description
Widen the existing subgrade in conformance with the typical sections.
Article 2 — Materials
Furnish water in accordance with Article 204.2., “Materials.”
Article 3 — Construction
3.1 Preparation of Embankment . Scarify to a depth of at least 6 in. into existing adjacent embankment slopes
before fill is placed.
3.2 Pavement Structure Removal . Remove material along the edge of the existing pavement. Provide a
vertical ly uniform cut uniformly along the horizontal alignment unless otherwise shown on the plans. Conform to the typical sections for the limits of removal unless directed otherwise. Accept ownership of excess material not used in the construction of the subgrade widening. Dispose of excess material in conformance with federal, state, and local regulations.
3.3 Widening. Remove material in cut sections and move to fill sections within the project. Use material from cut
sections for embankment. Place the material in fill sections in successive lifts to the line and grades shown on the typical sections. Provide additional embankment in accordance with the applicable bid item or Article 9.7., “Payment for Extra Work and Force Account Method,” if all excavation has been performed and additional embankment is required to complete the work.
3.4 Compaction. Manipulate and compact the widened subgrade in accordance with Article 132.3.,
“Construction.”
Article 4 — Measurement
This Item will be measured by the 100- ft. station along the baseline of each roadbed or by the square yard of added subgrade. This is a plans quantity measurement Item. The quantity to be paid is the quantity shown in the proposal, unless modified by Article 9.2., “Plans Quantity Measurement.” Additional measurements or calculations will be made if adjustments of quantities are required.
Article 5 — Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Subgrade Widening (Ordinary Compaction)” or “Subgrade Widening (Density Control).” This price is full compensation for excavati on; drying; hauling of embankment material from cuts to fills; finishing of the subgrade widening; disposal of material not used elsewhere on the project; furnishing and operating equipment; scarifying; shaping; compaction; and labor, fuel, materials, tools, and incidentals. No payment will be made for thickness or width exceeding that shown on the typical sections. “Sprinkling” and “Rolling” will not be paid for directly but will be subsidiary to this Item. 109 Corrections of unstable areas in the widened subgrade and embankment will be at the Contractor’s expense. In a cut section, drying required deeper than 6 in. below subgrade elevation will be paid for in accordance with Article 110.5., “Payment.” In a cut section, excavation, and replacement of unsuitabl e material below subgrade elevations will be performed and paid for in accordance with Article 110.5., “Payment.”