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Division 2 - Technical Provisions, IRC -1639 d. Granular Base Material: Granular base material to be added to the reclaimed layers shall consist of limerock meeting the requirements for Limerock Stabilized Base of the FDOT Specifications, Section 911. Further, it shall have a minimum LBR value of 100. 3. Equipment a. General: The Contractor shall accomplish the work utilizing a road reclaimer, a motor grader, a vibratory roller or three -wheeled roller, a water truck with spray bar and such additional equipment as may be necessary to the operation. The required equipment shall be subject to the County's approval, and the County may, at any time during the work, disapprove the use of a particular machine for unsafe, erratic, or inadequate performance. Utilization of a proper road reclaimer and compaction equipment as specified herein is essential to this work, and substitution of other equipment or a different technique shall not be acceptable. b. Reclaimer: The work shall be performed utilizing a road reclaimer machine originally designed for pavement reclaiming. The road reclaimer shall be a model of equal or greater of 400 horsepower and an 8' cutting/ mixing width. The reclaimer shall be capable of pulverizing and mixing pavement, base materials, and subgrade soil to depth of 16 inches. It shall be capable of injecting asphalt emulsion into the rotor chamber at an accurately controlled rate and of doing so in confined areas inaccessible to a tanker truck. c. Compacting Equipment: The Contractor shall compact the reclaimed base material with a vibratory roller weighing not less than 13,000 lbs. or by a three wheeled roller weighing not less than 11 tons. The vibrator must be fully operable at maximum amplitude throughout the compacting process. 4. Construction Procedure a. General: When the work is to be performed under traffic, each lane shall be completed in segments, the lengths and limits of which shall be approved by the County. The County may limit the length of the work zone to avoid causing a traffic hazard or undue delay. Before commencing the reclaiming operations, the Contractor shall set alignment stakes (laths) at intervals of 200 feet or less on both sides of the road, offset at least 4 feet from the proposed edge of pavement for use in preparing the base and placing the new pavement. The setting of laths shall be in addition to any other markers or reference points required under the Contract, and the placing of surveying markers or other references elsewhere shall not substitute for the required laths along the existing pavement. Prior to beginning work, the Contractor shall relocate all mailboxes, newspaper boxes, signs, and other appurtenances which are located within such proximity to the roadway as to risk damage or to interfere with the work. Before this work may begin, residents and businesses shall be notified of the impending work by means of portable changeable message signs (PCMS). After all other work items are complete, the removed items shall be replaced in their original locations, except that the distance from the proposed edge of pavement shall be as prescribed by County requirements or guidelines. b. Reclaiming: The Contractor shall pulverize the existing pavement in multiple passes of the reclaimer, applying sufficient mechanical effort to reduce the fragments to a maximum size Division 2 — Technical Provisions - 01025-20 F:\Public Works\ENGINEERING DIVISION PROJECTS\1639 69th Street 66th Avenue to US -1 Resurfacng (SCOP)\1-Admin\Bids\Bid Documents - Advertisement\DIV 2 TECHNICAL PROVISIONS - IRC-1639.docx