147 SECTION 228 SUBGRADE PREPARATION
228.1 -DESCRIPTION : This work shall consist of preparing the subgrade for the placing of base or subbase in accordance with these Specifications and in reasonably close conformity wit h the lines, grades, dimensions and cross section shown on the Plans. This item is intended to be used for any project or portion thereof where the Contract is for paving without grading.
228.2 -MATERIALS : Not specified.
228.3 -CONSTRUCTION METHODS : All work shall be performed in accordance with the applicable provisions of 207 and 211. Subgrade preparation shall include the entire width of the subgrade. Excavation material shall be used to bring eroded areas to the plan cross section. If sufficient material is not obtained from the subgrade preparation, additional suitable material shall be obtained by the Contractor.
228.4 -METHOD OF MEASUREMENT : The quantity of work done will be measured in square yards of “Subgrade Preparation ” as determined from lines and dimensions shown on the Plans. When borrow is necessary to complete the subgrade preparation item, it will be measured and paid for under the provisions of 211.
228.5 -BASIS OF PAYMENT : The quantity, determined as provided above, will be paid for at the contract unit price for the item listed below, which price and payment shall be full compensation for doing all the work prescribed in a workmanlike and acceptable manner, in cluding all labor, tools, equipment, and incidentals necessary to complete the work.
228.6 -PAY ITEM : ITEM DESCRIPTION UNIT 228001 -* Subgrade Preparation Square Yard
* Sequence number
148 SECTION 229 SHOULDERS AND DITCHES
229.1 -DESCRIPTION : This work shall consist of trimming, sloping, shaping, grading, subgrading, scarifying, and compacting existing shoulders and ditches i ncluding inlets and outlets to pipe culverts, and constructing new shoulders and ditches where necessary, in accordance with these Specifications and in reasonably close conformity with the lines, grades, and cross sections shown on the Plans or establishe d by the Engineer.
229.2 -MATERIALS : Not Specified.
CONSTRUCTION METHODS
229.3 -SHOULDERS : Shoulders shall be formed and compacted as soon as possible after the surfacing item is completed, or as directed by the Engineer, to the grade and cross section shown on the Plans. Needed material shall be furnished by the Contractor. The character and operation of the equipment shall be such that the pavement will no t be damaged. Pavement damage by these operations shall be repaired, or removed and replaced by the Contractor to the satisfaction of the Engineer, without extra compensation. Upon evidence of such damage, the Engineer may require the discontinuance of t he methods used and the work to be done by other methods. The final dressing shall be by hand methods if so required. Shoulders shall be constructed of suitable material obtained on the project or of selected material as designated on the Plans. Surplus or unsuitable material shall be removed and disposed of as directed, which shall include shaping shoulders under existing guardrail to edge of the fill. The entire shoulder area shall be uniformly compacted by rollers, mechanical tampers, or hand methods , and finally dressed to true section.
229.4 -DITCHES : Existing ditches shall be trimmed, sloped, and cleaned, and inlets and outlets to existing structures opened and shaped to a uniform grade as directed by th e Engineer.
229.5 -METHOD OF MEASUREMENT : The quantity of work done will be the number of linear miles, or portion thereof measured. Any additional work beyond the scope of the original Plans but authorized by the Engineer will be measured in linear miles and paid at the unit bid price for this item.
229.6 -BASIS OF PAYMENT : The quantity, determined as provided above, will be paid for at the contract unit price bid for this item, which price and payment shall be full compensation for doing all the work prescribed in a workmanlike and acceptable manner, including all labor, tools, equipment, material, and incidentals necessary to complete t he work. Stabilizing material when specified on the Plans will be measured and paid for separately.