203Test Rolling

203.04 Test Rolling

Include the cost of the following in the contr act unit price for Borrow or Select Borrow :  Building and maintaining haul roads from off -site borrow sources to the project; and  Clearing, grubbing, stripping, or replacing topsoil at off -site borrow sources. If the Contractor is allowed by the Resident Engineer to utilize borrow consisting of dispersive clay, include the cost of clay plating or other approved methods of encapsulation in the contract unit price for Borrow or Select Borrow . The Department will pay for geogrid fabric in accordance with Section 326, "Geosynthetic Reinforcement." If inaccessible areas of earth fill require compac tion using mechanical tampers, i nclude the cost of the mechanical tampers in the contract unit price for the appropriate earthwork pay item . Include the cost of water used to achieve the required moisture content in the contract unit price for the applicable earthwork pay items.

203.01 Description

This work consists of test rolling embankments and cut sections with heavy pneumatic -tired rollers.

203.02 Materials — Vacant

203.03 Equipment

Obtain the Resident Engineer's approval of the equipment before using rollers. Provide heavy pneumatic -tired rollers with at least seven tires. Ensure the pressure in each tire is at least 90 percent of the tire manufacturer’s recommended maximum pressure for rolling operations. Ensure the roller wheels and axles allow each tire to carry an equal load. Use a roller with a loading platform and ballast that can carry a load of at least 6,600 lb [2,990 kg] per tire. Provide the Resident Engineer with the certified weights of the empty roller and the ballast. Ensure the rolling equipment can turn without damaging the area being tested.

203.04 Construction Methods

Roll the full width of the grading section indicated using two complete passes. Operate the roller from 2 mph to 10 mph [3 km/h to 16 km/h], as directed by the Resident Engineer. Test roll embankments where indicated at 2 ft [0.6 m] b elow the subgrade elevation and at the finished subgrade elevation; test roll cut sections at the finished subgrade elevation only. Remove soft, yielding, or unstable material and replace it with material approved by the Resident Engineer in accordance wit h Section 202, "Earthwork," at no additional cost to the Department. Perform test rolling on the corrected area. SALVAGING TOPSOIL 205.04

203.05 Method of Measuremen T - Vacant

203.06 Basis of Payment

The Department will pay for each pay item at the con tract unit price per the specified pay unit as follows: Pay Item: Pay Unit: TEST ROLLING Lump Sum SECTION 205 SALVAGING TOPSOIL

205.01 Description

This work consists of salvaging natural topsoil from areas of excavation and embankment, stockpiling, and replacing material on the completed areas for revegetation as indicated or as directed by the Engineer.

205.02 Materials

Topsoil. Soil consisting of vegetative matter and grass roots, or exhibiting other characte ristics common to surface soils. In all cases, the top inch of the soil surface shall be a part of the salvaged material.

205.03 Equipment — Vacant

205.04 Construction Methods

Clear brush, rock, shale, or other deleterious material from topsoil salvage are as indicated. Mow weeds and grasses more than 1 ft [0.3 m] tall and incorporate into the topsoil. Excavate the topsoil and stockpile at areas approved by the Resident Engineer. Stockpiles shall be at least 50 feet from a stream or river depicted as blue on the USGS 7.5 Minute Quadrangle Map. Topsoil depths and quantities indicated are approximate; remove all topsoil from salvage areas. Replace contaminated or lost topsoil with an equivalent, Resident Engineer -approved material, at no additional cost to the Department.