Item
209 LINEAR GRADING
209.01
Description
209.02 Materials
209.03
Construction Requirements
209.04 Ditch
Cleanout
209.05 Reshaping
Under Guardrail
209.06 Preparing
Subgrade for Shoulder Paving
209.07 Grading
Tolerances
209.08 Method of
Measurement
209.09 Basis of
Payment
209.01 Description. This work consists of
performing linear grading within the specified alignment detailed in the
Contract Documents and within the grading tolerances.
Use
removed or excavated materials in the Work when the material conforms to the
specifications; if not, then recycle or dispose of the material according to 105.16 and 105.17.
209.02 Materials. Furnish suitable materials as
defined in 203.02.R.
209.03 Construction Requirements. Construct
embankment and subgrade work according to Items 203 and 204.
When
off-project-limit embankment material is needed for the work, an estimated
quantity for Item 209 Borrow will be specified in
the Contract Documents.
209.04 Ditch Cleanout. Reestablish the
cross-section of the existing ditch. Use the required embankment material
to fill the eroded conditions. The compaction requirements specified in
Item 203 do not apply.
209.05 Reshaping Under Guardrail. Reshape
graded shoulders at locations were the existing guardrail is removed or where
the new guardrail is to be erected to ensure a smooth drainable surface free of
all irregularities.
209.06 Preparing Subgrade for Shoulder Paving. Prepare
the subgrade for shoulder paving by excavating the existing shoulder material
to the depth shown in the plan. Trim unsound or broken edges of asphalt
concrete or concrete pavement to a line established by the Engineer.
Remove any unstable material and shape and compact the subgrade.
Compact
the subgrade according to 204.03. Backfill
areas graded in excess of the depth shown on the plans with Item 617 compacted aggregate at no expense to the
Department.
209.07 Grading Tolerances. Do not
encroach on stream channels, impact wetlands, or extend beyond construction
limits, Right-of-Way or easement limits. Do not make alignment or profile
grade adjustments that adversely affect drainage. Construct the work to
the tolerances in 203.08.
209.08 Method of Measurement. The
Department will measure Linear Grading, Reshaping Under
Guardrail, and Preparing Subgrade for Shoulder Paving by the number of either
stations or miles (meters or kilometers) completed and accepted, along each
side of the pavement. The Department will not make deductions for
intersections and other gaps.
The
Department will measure Ditch Cleanout by the number of feet (meters) measured
along the centerline of the ditch.
The
Department will measure Borrow according to 203.09.
209.09 Basis of Payment. The
Department will pay according to 109.05
for changes or extra work that increases the haul distance by more than
1/2 mile (1 km) to the work detailed in the Contract Documents. The
Department will pay for additional quantities that increase the haul distance
1/2 mile (1 km) or less at the unit bid price.
The Department
will pay for accepted quantities at the contract prices as follows:
Item
Unit
Description
209
Station or
Mile
Linear Grading
(Meter or Kilometer)
209
Feet
(Meters)
Ditch Cleanout
209
Station or
Mile
Reshaping Under Guardrail
(Meter or Kilometer)
209
Station or
Mile
Preparing Subgrade for Shoulder Paving
(Meter or Kilometer)
209
Cubic Yard or Ton Borrow
(Cubic Meter
or Metric Ton)