Orange County NC Website
Browse       Search
<br />Attendant Booth Additions 32 11 23 - 2 <br />Orange County, North Carolina AUGUST 2025 <br />TRC PN: 670493 <br /> <br />A. The aggregate material shall be placed on the subgrade to the specified <br />depth and in such a manner as to prevent segregation. Where the <br />required compacted thickness of base is 8 inches or less, the base <br />material may be spread and compacted in one layer. Where the <br />compacted thickness is more than 8 inches, the base material shall be <br />spread and compacted in two or more lifts approximately 4 -6 inches. <br />Each layer of material shall be compacted tested, and approved before <br />placing succeeding layers of base material or pavement. <br /> <br />B. No material shall be placed on frozen subgrade or base. Hauling <br />equipment shall not be operated on subgrade or a previously completed <br />layer of base material soft enough to rut or weave beneath the equipment. <br /> The maximum speed of trucks traveling over any part of the subgrade or <br />base shall be 20 miles per hour. <br /> <br />C. The Contractor shall utilize methods of handling, hauling, and placing <br />material which will minimize segregation and contamination. If <br />segregation occurs, the Engineer may require that changes be made in <br />the Contractor's methods to minimize segregation, and may also require <br />mixing in pace which may be necessary to correct any segregated <br />material. No additional compensation will be allowed for work of in -place <br />mixing as may be required. Aggregate which is contaminated with foreign <br />materials to the extent the base course will not adequately serve its <br />intended use shall be removed and replaced by the Contractor at no <br />additional cost to the Owner regardless of prior acceptance. <br /> <br />3.2 SHAPING AND COMPACTION <br /> <br />A. Immediately after the placing of a layer of the base, the Contractor shall <br />begin machining and compacting the layer. Each layer shall be <br />maintained to the required cross-section during compacting and each <br />layer shall be compacted to the required density prior to placing the next <br />layer. Each layer of the base shall be compacted to a density equal to at <br />least 100% of that obtained by compacting a sample of the material in <br />accordance with AASHTO T99. The base material shall be compacted at <br />a moisture content which is approximately that required to produce the <br />maximum density indicated by the above test method. The Contractor <br />shall dry or add mixture to the material when required to provide a <br />uniformly compacted and acceptable base. <br /> <br />B. The final layer (or top surface for a single layer) of the base material shall <br />be shaped to conform to the lines, grade, and typical sections shown on <br />the plans or established by the Engineer. When completed, the base <br />course shall be smooth, hard, dense, unyielding, and well bonded. A <br />broom drag shall be used in connection with the final finishing and <br />conditioning of the surface of the base course. After final shaping and <br />compacting of the base, the Engineer will check the surface of the base <br />Docusign Envelope ID: 34F94CE0-2CE8-49C5-B7C4-6B696F8E23C3