208Clay Plating

208.01 Description

This work consists of constructing a layer of clay soil, or other material approved by the Resident Engineer, on exposed slopes composed of dispersive or erosive soils.

208.02 Materials

If the Contract does not specify plating material requirements, provide plating material in accordance with the following requirements:  Plasticity Index from 8 to 18.  Non -dispersive, using the Emerson Crumb Test, and either the Pinhole Test (ASTM D 4647) or Double Hydrometer Test (ASTM D 4221).  Obtained in accordance with Subsection 202.04.A(4), "Borrow."  From a Resident Engineer inspected and approved source .

208.03 Equipment — Vacant

208.04 Construction Methods

Before placing the plating materials, grade, shape, and level the specified portions of the exposed slopes as required by the Contract. Immediately before delivery of the plating material, dress or bench slopes as indicated. Deliver and dump the plating material at regular intervals, and in amounts that can be uniformly spread and will create layers not greater than 8 in [200 mm] deep. Compact the layers to at least 95 percent of maximum density and test in accordance with AASHTO T 99 Methods C or D. Use AASHTO T 310 (Nuclear) to determine the in -place density. Ensure the moisture content of the plating material is from optimum to 3 percentage points above optimum moisture content in accordance with AASHTO T 99. Continue placing, spreading, and compacting until the plating material reaches the final thickness indicated. Ensure the plating surface conforms to the specified slope. If sandy subgrade cannot support hauling and blading equipment without excessi ve rutting, add moisture and consolidate the subgrade or construct a temporary, plated road.

208.05 Method of Measuremen T

The Resident Engineer will measure the volume of the compacted in -place Clay Plating by multiplying the completed length of clay plati ng by the area of the cross section indicated.

209.04 Machine Grading

208.06 Basis of Payment

The Department will pay for each pay item at the contract unit price per the specified pay unit as follows: Pay Item: Pay Unit: CLAY PLATING Cubic Yard [Cubic Meter] Include the cost of water used in the plating process in the contract unit price for Clay Plating . SECTION 209 MACHINE GRADING

209.01 Description

This work consists of grading, using heavy machine blading and some drifting and hauling, to move earthwork material between balanced cuts and fills. For those one -mile sections indicated where excavation does not exceed 5,000 yd³ [3,820 m³] and approximately balances with embankments, the Engineer will allow the use of ma chine grading.

209.02 Material — Vacant

209.03 Equipment — Vacant

209.04 Construction Methods

Bring the roadbed to a uniform grade with elevations and typical cross -section as indicated, using the following methods:  Drifting or hauling excavated material,  Plowing,  Scarifying,  Blading,  Removing stone and boulders from the roadway,  Compacting, and  Shaping. Grade and shape side slopes and ditches in accordance with the typical cross -section. Excavate rock, hard sandstone, shale, or other solid and unyielding material in the roadbed, and backfill with specified material in accordance with Subsection 202.04.A, "Excavation and Borrow." Construct excavations and embankments in accordance with Subsection 202.04.A, "Excavation and Borrow," and Subsection 202.04.B, "Embankments." Repair damage to adjacent structures resulting from construction operations as directed by the Resident Engineer, at no a dditional cost to the Department.