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E. Guardrails 1. The guard rail shall consist of 0.125 inch aluminum sheet, 'I formed into a deep -beam type rail. Bolts and washers shall I conform to DOT Standards for aluminum guard rails. 2. Each end of the guard rail shall terminate in a terminal section, '! and lapped at the end post. 3. The rail post shall consist of timber posts and offset on 8 centers. Mount reflector assembly on offset each 24'. PART 3 - EXECUTION 3.01 INSTALLATION A. The subgrade preparation shall comply with the requirements of Section 160 of the Florida Department of Transportation Specifications. All soft and yielding material and other portions of the subgrade which will not compact readily shall be removed and replaced with suitable material and the whole subgrade brought to line and grade and to a foundation of uniform compaction and supporting power. The cost of removing and replacing unsuitable material shall be included in the bid for the paving. ' B. The top 12 inches of the subgrade, in both cut and fill sections, shall be compacted to a density of not less than 100 percent of the maximum density as determined by the AASHTO Method T -180. If shown on the Drawings, compact subgrade to a Florida Bearing Value of 75 psi. Unless the subgrade material at the time of compacting contains sufficient moisture to permit proper compaction it shall be moistened as necessary and then compacted. Subgrade material containing excess moisture shall be permitted to dry to the proper ' consistency before being compacted. The subgrade shall be shaped prior to making the density tests. The required density shall be maintained until the base or pavement has been laid or until the 1 aggregate materials for the base or pavement course have been spread in place. tC. The minimum compacted thickness of the limerock base shall be 12 inches applied in three layers of equal depth unless otherwise shown ' on the Drawings. The width of the limerock base shall be 3 feet wider than the pavement, 1-1/2 ft. on each side. D. Before the prime coat is applied, all loose material, dust, dirt or other foreign material which might prevent bond with existing surface shall be moved to the shoulders to the full width of the base by means of ' revolving brooms, mechanical sweepers, blowers, supplemented by hand sweeping or other approved methods. The glazed finish shall 07/03 02513 -2 03- 4138.A