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1 <br />1 <br />i] <br />E. Guardrails <br />1. The guard rail shall consist of 0.125 inch aluminum sheet, <br />formed into a deep -beam type rail. Bolts and washers shall <br />conform to DOT Standards for aluminum guard rails. <br />2. Each end of the guard rail shall terminate in a terminal section, <br />and lapped at the end post. <br />3. The rail post shall consist of timber posts and offset on 8 <br />centers. Mount reflector assembly on offset each 24'. <br />PART 3 - EXECUTION <br />3.01 INSTALLATION <br />A. The subgrade preparation shall comply with the requirements of <br />Section 160 of the Florida Department of Transportation <br />Specifications. All soft and yielding material and other portions of the <br />subgrade which will not compact readily shall be removed and <br />replaced with suitable material and the whole subgrade brought to line <br />and grade and to a foundation of uniform compaction and supporting <br />power. The cost of removing and replacing unsuitable material shall <br />be included in the bid for the paving. <br />B. The top 12 inches of the subgrade, in both cut and fill sections, shall <br />be compacted to a density of not less than 100 percent of the <br />maximum density as determined by the AASHTO Method T -180. If <br />shown on the Drawings, compact subgrade to a Florida Bearing Value <br />of 75 psi. Unless the subgrade material at the time of compacting <br />contains sufficient moisture to permit proper compaction it shall be <br />moistened as necessary and then compacted. Subgrade material <br />containing excess moisture shall be permitted to dry to the proper <br />consistency before being compacted. The subgrade shall be shaped <br />prior to making the density tests. The required density shall be <br />maintained until the base or pavement has been laid or until the <br />aggregate materials for the base or pavement course have been spread <br />in place. <br />C. The minimum compacted thickness of the limerock base shall be 12 <br />inches applied in three layers of equal depth unless otherwise shown <br />on the Drawings. The width of the limerock base shall be 3 feet wider <br />than the pavement, 1-1/2 ft. on each side. <br />1 D. Before the prime coat is applied, all loose material, dust, dirt or other <br />foreign material which might prevent bond with existing surface shall <br />be moved to the shoulders to the full width of the base by means of <br />revolving brooms, mechanical sweepers, blowers, supplemented by <br />hand sweeping or other approved methods. The glazed finish shall <br />1 07103 02513 -2 03- 4138.A <br />