00370.00 300 Section 00370 - Finishing Roadbeds
Description
00370.00Scope - This Work consists of the following:
• Within Roadbed Cross Section - Trimming, shaping, and finishing the Subgrade, ditches, slopes, and other graded surface areas to the lines, grades, Cross Sections, and condition specified.
• Outside Roadbed Cross Section - Obliterating Surfacings by removing existing paved surfaces, and loosening, breaking up, and spreading the existing bases lying outside the new Roadbed Cross Section and blending into the adjacent terrain.
If existing paved surf aces and bases are to be excavated and removed, then performance, measurement, and payment of the Work will be according to Section 00330.
Construction
00370.40Within Roadbed Cross Section - After the Roadbed earthwork has been substantially
completed, do the following:
• Remove vegetative growth. • Excavate unstable Subgrade material, and backfill according to 00330.41(a)(9). • Trim and shape the entire Subgrade to be free of ruts, depressions and irregularities. • Compact all fills according to 00330.43. • Finish the surface to within a tolerance of plus or minus 0.06 foot from the established line, grade, and Cross Section or as di rected.
• Remove all litter, debris and obstructions. • Trim and shape to Neat Lines all ditches, channels and canals provided for waterways.
• Remove all exposed roots, debris, and all stones more than 3 inches in size which are loose or could become loosened. • Make Roadbed embankment slopes as smooth, safe and sightly as practica ble with the Materials used to construct the embankments. • Trim and shape all excavation and embankment side slopes.
• Clean out all sewers, culverts, drains, and their appurtenances constructed under the Contract. • Remove all extraneous matter in the vicinity of Bridge ends, culvert ends, inlets, walls, and other areas. • Trim and shape the cleaned areas.
00370.90 301 (e) Disposal of Materials - Dispose of all materials removed in 00370.40(a) through 00370.40(d) according to 00290.20.
00370.41Outside Roadbed Cross Section - Remove existing paved surfaces, if any, loosen the
remaining Bases and Surfacings by scarifying, plowing, vibrating, rolling or other means, to a depth of at least 12 inches, or to solid Rock , whichever is the lesser depth.
• Break the loosened materials into fragments having no dimension greater than 3 inches, unless the Aggregate in the original material exceeds that size. • Spread and mix the loosened and broken Materials, and blend them into the adjacent terrain as directed.
Maintenance
00370.60Maintenance - Maintain the finished Work in its finished condition until final completion of
the Contract Work , or until it is covered with a subsequent Course of Material placed under the Contract.
Measurement
00370.80Measurement - No measurement of quantities will be made for Work performed under this
Section.
Payment
00370.90Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement, for the following items: Pay Item Unit of Measurement
Item (a) includes trimming, shaping and finishing the Subgrade, ditches, and slopes, including areas occupied by approach roads, road connections, interchanges, ramps, frontage roads, multiple lanes, and any other areas on which earthwork is performed under this Contract. Item (b) includes removing existing paved surfaces, and loosening, breaking up, spreading, and mixing the old bases lying outside the new Roadbed Cross Section and blending into the adjacent terrain.
Payment will be payment in full for f urnishing all Equipment , labor, and Incidentals necessary to complete the Work as specified.
Excavation of unstable Subgrade material and backfill will be paid for according to 00330.90. When the Contract Schedule of Items does not indicate payment for t he Work under this Section, no separate or additional payment will be made. Payment will be included in payment made for the appropriate items under which this Work is required.