210 Page 141210 ROADWAY SHAPING
210.1DESCRIPTION
This work consists of reshaping an existing surface prior to placement of surfacing material.
210.2MATERIALS (Not Specified)
210.3CONSTRUCTION REQUIREMENTS
This work will be performed in advance of placement of surfacing material. It will be the Contractor's responsibility to maintain the prepared surface until surfacing has been placed. A.Surface Preparation: The upper 4 inches of granular material will be scarified, reworked, shaped, and recompacted to the typical section in accordance with Section 260.3 C. B.Ordinary Roadway Shaping: The existing granular material will be removed, and the upper 6 inches of the subgrade will be reworked and recompacted in accordance with Section 120.3 B.3.a . After the subgrade is reworked and recompacted, the granular material will be brought back onto the roadway and recompacted in accordance with Section 260.3 D. On newly constructed earth subgrades, the upper 6 inches of the subgrade will be reworked and recompacted in accordance with Section 120.3 B.3.a prior to placing granular materials. This requirement will be waived for A-3 and A-2-4(0) soils. C.Heavy Roadway Shaping: The existing granular material will be removed and upper 12 inches of the subgrade will be reworked and recompacted in a minimum of two lifts in accordance with Section
120.3B.3.a . The Engineer may order the Contractor to rework and recompact the subgrade to a
depth greater than 12 inches. If more than 12 inches of the subgrade is reworked and recompacted, the maximum lift thickness during recompaction will not exceed 6 inches. After the subgrade is reworked and recompacted, the granular material will be brought back onto the roadway and recompacted in accordance with Section 260.3 D. On newly constructed earth subgrades, the upper 12 inches of the subgrade will be reworked and recompacted in accordance with Section 120.3 B.3.a prior to placing granular materials. This requirement will be waived for A-3 and A-2-4(0) soils. D.Unclassified Excavation, Digouts: Unclassified excavation, digouts consists of the removal and disposal of unstable material below the required depth of surface preparation, ordinary roadway shaping, or heavy roadway shaping on which surfacing material is to be placed. If unstable material is encountered the Contractor will excavate unstable material. When granular material is used for backfill, the excavated area will extend to a daylight point so lateral drainage is provided. The exposed undercut surface will be satisfactorily compacted prior to backfilling. Backfill will be placed and compacted as directed by the Engineer. The subgrade will be finished to within minus 0.04 feet to plus 0.08 feet from the design grade and typical section shown in the plans and to within ±0.5% of the typical section cross slope. The quarter crown within any 12 foot transverse length will not exceed 0.04 feet when measured 210 Page 142with a straight edge, stringline, or by other suitable equipment. Following roadway shaping, the centerline will be finished to a transverse distance within ± 0.25 feet of the plans shown location of centerline. Following surface preparation, the centerline will be finished to a transverse distance within ± 0.1 foot of the plan’s shown location of centerline. Water will be furnished by the Contractor in accordance with Section 120.
210.4METHOD OF MEASUREMENT
A.Surface Preparation, Ordinary Roadway Shaping, and Heavy Roadway Shaping: Surface preparation, ordinary roadway shaping, and heavy roadway shaping will be measured to the nearest 0.001 mile, along the centerline of the project. If additional heavy roadway shaping is required, the quantity of heavy roadway shaping will be proportionately increased by the same percentage increase in required depth. (For example, heavy roadway shaping to a depth of 18 inches will be equivalent to 1.5 times the quantity of the standard heavy roadway shaping.) On projects involving more than one mainline roadbed each roadbed will be measured, based on the project centerline. When a project centerline is not provided, measurement of each roadbed will be based on its construction centerline. Measurement of access roads for rest areas and weigh stations, crossroads, ramps, and service roads will be based on construction lines. The points where measurement will begin and end will be as shown. B.Unclassified Excavation, Digouts : Excavation of unstable material will be measured as set forth in Section 120.4 . C.Water: Water will be measured in accordance with Section 120.4 . Granular material, other than existing surface gravel, used to backfill digouts will be measured to the nearest 0.1 ton.
210.5BASIS OF PAYMENT
A.Surface Preparation: Surface preparation will be paid for at the contract unit price per mile. Payment will be full compensation for scarifying, reworking, shaping, compacting, reprocessing blotters if required, equipment, labor, and incidentals necessary to satisfactorily complete the work. B.Ordinary Roadway Shaping and Heavy Roadway Shaping: Ordinary roadway shaping, and heavy roadway shaping will be paid for at the contract unit price per mile. Payment will be full compensation for equipment, labor, and incidentals necessary to satisfactorily remove the existing surfacing, shape, replace, and compact the materials as specified. C.Unclassified Excavation, Digouts: Unclassified excavation, digouts will be paid for as per Section 120.5 . D.Water: Water will be paid for in accordance with Section 120.5 . 210 Page 143Granular material used to backfill digouts will be paid for at the contract unit price per ton. The contract unit price will include all costs associated with furnishing, hauling, placing, and compacting the material. 230 Page 144230 SALVAGING, STOCKPILING, AND PLACING TOPSOIL
230.1DESCRIPTION
This work consists of excavating, hauling, stockpiling, depositing, and spreading topsoil on prepared areas.
230.2MATERIALS (Not specified)
230.3CONSTRUCTION REQUIREMENTS
A.Salvage: Topsoil will be selected from the regular grading areas or from other designated areas. Areas from which topsoil is to be excavated will be cleared of objectionable vegetation and all litter such as brush, rock, and foreign material. Topsoil will be excavated in sufficient volume to cover the designated areas to the required depths. Salvaged topsoil may be stockpiled in convenient locations within the right-of-way as approved by the Engineer. The separation of cut and fill piles is not required. Topsoil piles will be located where the topsoil will not run off into any waterway due to a rain event. When operations of the Contractor do not permit stockpiling of topsoil within the right-of-way, it will be the Contractor's obligation to arrange for stockpile sites at the Contractor’s own expense. The stockpiles will be shaped and smoothed to permit accurate measurements. Stockpile areas will be left in a neat condition. B.Preparation of Roadway: Areas designated to be covered with salvaged topsoil will be undercut or underfilled, so the finished lines conform to the template lines on the cross sections after the topsoil placement. The areas receiving topsoil will be shaped and smoothed prior to placing topsoil. C.Placing: Topsoil will be spread evenly and uniformly over the designated areas to the specified depth. If topsoil is not available in sufficient quantities to cover the designated areas to the plan specified depth, the Contractor will spread the available topsoil as required by the Engineer.
230.4METHOD OF MEASUREMENT
A.Salvaged Topsoil: Measurement for removal of topsoil from its original position will be made in cubic yards. Measurement will not be made unless such removal is designated on the plans or directed by the Engineer. The volume of topsoil will be determined by measuring the topsoil stockpiles. B.Placing Topsoil: The cubic yards of topsoil to be measured will be the quantity of topsoil removed from stockpiles and placed on the designated areas. Measurements will be made prior to removal of the material from such stockpiles.