318Selected Material Surface Course

318.1 General Description

This work includes constructing a surface course with soil and/or stone. Construct according to these specifications and to the lines, grades, and typical cross-sections shown on the plans or established by the Engineer. Apply the requirements of Section 300 to this Item unless modified by this specification.

318.1.01 Definitions

General Provisions 101 through 150.

318.1.02 Related References

A. Standard Specifications Section 205 – Roadway Excavation Section 300—General Specifications for Base and Subbase Courses Section 303—Topsoil, Sand-Clay or Chert Construction Section 800—Coarse Aggregate Section 803—Stabilizer Aggregate Section 814—Soil Base Materials Section 815—Graded Aggregate B. Referenced Documents General Provisions 101 through 150.

318.1.03 Submittals

Submit a “Request for Material Approval.”

318.2 Materials

Ensure that materials meet the requirements of the following Specifications: Material Section Topsoil and Sand Clay 814.2.01 Chert 814.2.04 Graded Aggregate 815.2.01, and notes 1 and 2, below.

815.2 02, and notes 1 and 2, below.

Coarse Aggregate, Size No. 467, 3, or 4 800.2.01 Stabilizer Aggregate (Type as Designated) 803 NOTE 1. Use Subsection 815.2.02, Unconsolidated Limerock as aggregate surface course only if the material gradation meets the requirements of Subsection 815.2.01, Graded Aggregate. NOTE 2. When a Project requires an aggregate surface course to be placed and left as a riding surface, use only graded aggregate that meets the requirements of Subsection 815.2.01, Graded Aggregate. A. Satisfactory Material Use in-place roadbed or driveway material when determined to be acceptable by the Engineer. B. Unsuitable Material Remove roadbed materials unsuitable for use as determined by the Engineer. C. Additional Material To add materials to those in the roadbed or to build up the surface course entirely, use materials approved by the Engineer.

318.2.01 Delivery, Storage, and Handling

General Provisions 101 through 150.

318.3 Construction Requirements

318.3.01 Personnel

General Provisions 101 through 150.

318.3.02 Equipment

General Provisions 101 through 150.

318.3.03 Preparation

If constructing the course entirely of new materials, prepare the subgrade as specified in Subsection 300.3.03.C, Preparing the Subgrade. If using in-place material, ensure that the surface has been properly shaped. Do not place materials on muddy or frozen subgrade.

318.3.04 Fabrication

General Provisions 101 through 150.

318.3.05 Construction

Spread selected material by approved method to the thickness prescribed on the plans. Scarify, mix, and shape the selected material to the required cross section. Roll until the surface is thoroughly compacted, firm, and unyielding. Add water to assist scarifying and compaction. Where in place materials are approved for use, scarify, mix, shape and compact according to the specifications for the applicable material. When stabilizer aggregate is specified, mix it into the surface course according to Subsection 303.3.05.B.3, Stabilizing. Where aggregate surface course is specified, spread the specified aggregate or stabilizer material uniformly to the required depth at locations shown on the Plans or as directed by the Engineer.

318.3.06 Quality Acceptance

General Provisions 101 through 150.

318.3.07 Contractor Warranty and Maintenance

Maintain the finished surface course to the required cross section and usable, until the project is completed and accepted.

318.4 Measurement

A. Selected Material Surface Course This Item, furnished, complete in place and accepted, is measured by the cubic yard (meter), loose volume as specified in Section 109. B. In-Place Selected Material Surface Course This Item is measured in place, on the roadway, in square yards (meters). The actual length is measured along the surface of the surface course and multiplied by the plan width. Where this item is on driveways or other irregular areas, the quantity is the actual number of square yards (meters) completed in place and accepted. C. Stabilizer Aggregate and Aggregate Surface Course Stabilizer Aggregate and Aggregate Surface Course are measured by the ton (megagram). Their weights are determined with certified truck scales as specified in Section 109. D. Unsuitable Material Removed unsuitable material is measured and paid for as Roadway Excavation-Unclassified, Section 205.

318.4.01 Limits

General Provisions 101 through 150.

318.5 Payment

A. Selected Material Surface Course This item will be paid for at the Contract Unit Price per cubic yard (meter), complete in place and accepted. This payment will be full compensation for: • Preparing the subgrade • Furnishing all material • Loading, hauling, and unloading • Scarifying • Pulverizing • Harrowing • Spreading • Mixing, compacting, and shaping • Maintaining and watering the course B. In-Place Selected Material Surface Course This Item, regardless of the depth of material processed, will be paid for at the Contract Unit Price per square yard (meter), complete in place and accepted. This payment will be full compensation for: • Scarifying • Pulverizing • Harrowing • Mixing, compacting, and shaping • Maintaining and watering the course C. Stabilizer Aggregate The Stabilizer Aggregate will be paid for at the Contract Unit Price per ton (megagram), complete in place and accepted. This payment will be full compensation for: • Furnishing all material • Loading, hauling, and unloading • Scarifying • Spreading, mixing, compacting, and shaping • Maintaining and watering the course D. Aggregate Surface Course Aggregate Surface Course will be paid for at the Contract Unit Price per ton (megagram), complete in place and accepted. This payment will be full compensation for: • Furnishing all material • Loading, hauling, and unloading • Spreading, compacting, and shaping • Maintaining the course Payment will be made under: Item No. 318 Selected materials, surface course Per cubic yard (meter) Item No. 318 In-place selected material surface course Per square yard (meter) Item No. 318 Aggregate surface course Per ton (megagram) Item No. 303 Stabilizer aggregate type ___ Per ton (megagram)

318.5.01 Adjustments

General Provisions 101 through 150.