DIVISION 21.  EARTHWORK, SUBGRADES, AND SUBBASES

Section 2101. Clearing and Grubbing
2101.01   DESCRIPTION
2101.02   CONSTRUCTION.
2101.03   METHOD OF MEASUREMENT.
2101.04   BASIS OF PAYMENT.

Section 2102. Roadway and Borrow Excavation
2102.01   DESCRIPTION.
2102.02   CLASSIFICATION OF EXCAVATION.
2102.03   REMOVAL AND PLACEMENT OF BOULDERS.
2102.04   REMOVAL OF UNSUITABLE OR UNSTABLE SOIL AND PLACEMENT OF SELECTED OR SPECIAL BACKFILL MATERIAL.
2102.05   ROCK CUTS.
2102.06   BORROW.
2102.07   PLACEMENT OF SURPLUS MATERIAL.
2102.08   PROVISIONS FOR DRAINAGE.
2102.09   PROTECTION OF TREES AND SHRUBS.
2102.10   ARCHAEOLOGICAL SALVAGE.
2102.11   FINISHING.
2102.12   GRADING FOR PAVING.
2102.13   METHOD OF MEASUREMENT.
2102.14   BASIS OF PAYMENT.

Section 2103. Fuel Adjustment
2103.01   DESCRIPTION.
2103.02   APPLICATION.
2103.03   PRICE INDEX.
2103.04   METHOD OF MEASUREMENT.
2103.05   BASIS OF PAYMENT.

Section 2104. Channel Excavation
2104.01   DESCRIPTION.
2104.02   CLASSIFICATION.
2104.03   METHOD OF MEASUREMENT.
2104.04   BASIS OF PAYMENT.

Section 2105. Stripping, Salvaging, and Spreading Topsoil
2105.01   DESCRIPTION.
2105.02   PREPARATION OF SOD.
2105.03   EXCAVATION OF TOPSOIL.
2105.04   PLACING TOPSOIL.
2105.05   METHOD OF MEASUREMENT.
2105.06   BASIS OF PAYMENT.

Section 2106. Settlement Plates
2106.01   DESCRIPTION.
2106.02   MATERIALS.
2106.03   CONSTRUCTION.
2106.04   METHOD OF MEASUREMENT.
2106.05   BASIS OF PAYMENT.

Section 2107. Embankments
2107.01   DESCRIPTION.
2107.02   EQUIPMENT.
2107.03   PREPARATION OF THE SITE.
2107.04   DEPOSITING EMBANKMENT MATERIAL.
2107.05   TYPE A COMPACTION.
2107.06   TYPE B COMPACTION.
2107.07   COMPACTION BY OTHER METHODS AND EQUIPMENT.
2107.08   COMPACTION WITH MOISTURE AND DENSITY CONTROL.
2107.09   COMPACTION WITH MOISTURE CONTROL.
2107.10   ROCK FILLS.
2107.11   GRANULAR BLANKETS.
2107.12   REBUILDING EMBANKMENTS.
2107.13   COMPACTING TRENCH BOTTOM.
2107.14   USE OF UNSUITABLE SOILS.
2107.15   EMBANKMENTS ADJACENT TO CULVERTS AND STRUCTURES.
2107.16   METHOD OF MEASUREMENT.
2107.17   BASIS OF PAYMENT.

Section 2108. Overhaul
2108.01   DESCRIPTION.
2108.02   METHOD OF MEASUREMENT.
2108.03   BASIS OF PAYMENT.

Section 2109. Natural Subgrade
2109.01   DESCRIPTION.
2109.02   RESERVED.
2109.03   NATURAL SUBGRADE FOR PAVEMENT, PAVEMENT WIDENING, BASE COURSE, OR SUBBASE.
2109.04   TREATMENT OF SUBGRADE FOR CONCRETE PAVEMENT.
2109.05   SPECIAL COMPACTION OF SUBGRADE.
2109.06   METHOD OF MEASUREMENT.
2109.07   BASIS OF PAYMENT.

Section 2110. Soil Aggregate Subbase
2110.01   DESCRIPTION.
2110.02   MATERIALS.
2110.03   SOIL AGGREGATE SUBBASE EQUIPMENT.
2110.04   ROADBED CORRECTION.
2110.05   CONSTRUCTION.
2110.06   MAINTENANCE OF COMPLETED SUBBASE.
2110.07   METHOD OF MEASUREMENT.
2110.08   BASIS OF PAYMENT.

Section 2111. Granular Subbase
2111.01   DESCRIPTION.
2111.02   MATERIAL.
2111.03   EQUIPMENT.
2111.04   PREPARATION OF SUBGRADE.
2111.05   DELIVERY OF MATERIALS.
2111.06   CONSTRUCTION OF GRANULAR SUBBASE.
2111.07   MAINTENANCE OF COMPLETED GRANULAR SUBBASE.
2111.08   METHOD OF MEASUREMENT.
2111.09   BASIS OF PAYMENT.

Section 2113. Subgrade Stabilization Material.
2113.01   DESCRIPTION.
2113.02   MATERIAL.
2113.03   PLACEMENT.
2113.04   REPAIR.
2113.05   METHOD OF MEASUREMENT.
2113.06   BASIS OF PAYMENT.

Section 2114. Class A Subbase
2114.01   DESCRIPTION.
2114.02   CONSTRUCTION.
2114.03   TOLERANCES.
2114.04   METHOD OF MEASUREMENT.
2114.05   BASIS OF PAYMENT.

Section 2115. Modified Subbase
2115.01   DESCRIPTION.
2115.02   MATERIAL.
2115.03   EQUIPMENT.
2115.04   CONSTRUCTION.
2115.05   METHOD OF MEASUREMENT.
2115.06   BASIS OF PAYMENT.

Section 2121. Granular Shoulders
2121.01   DESCRIPTION.
2121.02   MATERIALS.
2121.03   EQUIPMENT.
2121.04   PROPORTIONING AND MIXING.
2121.05   SURFACE PREPARATION.
2121.06   CONSTRUCTION.
2121.07   LIMITATIONS.
2121.08   METHOD OF MEASUREMENT.
2121.09   BASIS OF PAYMENT.

Section 2122. Paved Shoulders
2122.01   DESCRIPTION.
2122.02   MATERIALS.
2122.03   EQUIPMENT.
2122.04   PREPARATION OF SHOULDER AREA.
2122.05   CONSTRUCTION.
2122.06   FINISHING.
2122.07   METHOD OF MEASUREMENT.
2122.08   BASIS OF PAYMENT.

Section 2123. Earth Shoulders for Pavements and Bases
2123.01   DESCRIPTION.
2123.02   CONSTRUCTION.
2123.03   FINISHING.
2123.04   METHOD OF MEASUREMENT.
2123.05   BASIS OF PAYMENT.

Section 2125. Reshaping Ditches
2125.01   DESCRIPTION.
2125.02   CONSTRUCTION.
2125.03   METHOD OF MEASUREMENT.
2125.04   BASIS OF PAYMENT.

Section 2126. Reclaiming Present Surfacing Material
2126.01   DESCRIPTION.
2126.02   CONSTRUCTION.
2126.03   METHOD OF MEASUREMENT.
2126.04   BASIS OF PAYMENT.

Section 2127. Reconstruction of Roadbed
2127.01   DESCRIPTION.
2127.02   CONSTRUCTION.
2127.03   METHOD OF MEASUREMENT.
2127.04   BASIS OF PAYMENT.