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CITY OF SANTA ANA <br /> SPECIFICATIONS <br /> PROJECT NO.: 25-6030 <br /> TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD <br /> AVENUE <br /> Pipe bedding and trench backfill shall be accomplished in accordance with the City of <br /> Santa Ana Standard Plan No. 1150, these Special Provisions, and the trench details on the <br /> construction drawings. For VCP sewers, the pipe zone and bedding material shall be '/- <br /> inch crushed rock. For VCP sewers in high groundwater conditions, the pipe zone and <br /> bedding material shall be 'A"crushed rock wrapped in geofabric(Mirafi 140N or approved <br /> equal). For PVC pipe and ductile iron pipe sewers, the pipe zone and bedding material <br /> shall be imported SE-30 sand. The trench zone backfill shall be Class II aggregate base. <br /> All material tickets (i.e. Sand, Class II Base, Crushed Rock, Asphalt, Concrete, etc.) shall <br /> be given to the City Inspector on a daily basis. <br /> No backfill shall be placed until the sewer pipe laid has been approved by the City <br /> Inspector. <br /> Crushed rock products shall be in accordance with subsection 200-1.2 and Table 200- <br /> 1.2(A)of the Standard Specifications. <br /> The seventh and eighth paragraphs of Subsection 306-1.3.1 of the Standard Specifications <br /> are hereby deleted and replaced with the following: <br /> Rocks greater than 4 inches in any dimension will not be permitted in backfill <br /> placed between 1-foot above the top of any pipe and 1-foot below pavement <br /> subgrade. <br /> Backfill around sewer manhole and structures shall be sand placed a minimum of <br /> 2'laterally around structure and backfilled to subgrade. <br /> The following test methods shall be used for determining relative compaction: <br /> California Test 216 (Sand Cone Method) <br /> California Test 231 (Nuclear Gauge Method) <br /> The Contractor will be provided with compaction test at locations deemed necessary by the <br /> Engineer. <br /> If compaction fails to meet the Contract Specifications,then the Contractor shall make the <br /> necessary adjustments and is responsible for the cost of additional compaction tests until <br /> compaction per the specifications is met. <br /> All trench and structure backfill sand,crushed rock and Class II aggregate base and native <br /> material shall be compacted to 95% of maximum density at optimum moisture. <br /> If any trench,through the neglect of the Contractor, is excavated below the grade required <br /> by the plans and these Special Provisions, it shall be refilled to grade with additional <br /> bedding. <br /> 86 <br />