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IJ <br /> <br />211 material within roadway areas including holes, pits, and other depressions. within the roadway <br />212 azea. Only approved materials shall be used in the construction of embankments and fills. <br />213 <br />214 Free running water shall be drained from the material before the material is placed on the <br />215 roadway. <br />216 <br />217 The type of relative compaction required shall be as provided in the Contract. Broken concrete, <br />218 broken asphalt, or other solid materials more than 6 inches in greatest dimension shall not be <br />219 placed within embankment aeeas supporting the roadway shoulders and pavement structure. <br />220 These embankment areas are defined as the cross-sectional areas of an embankment situated <br />221 beneath the shoulders and pavement structure and inside the lines projected downward and <br /> <br />222 <br />outward on a l:l slope from the outside edges of the roadway shoulders to their intersection with ' <br />223 the base of the embankment. Broken concrete, broken asphalt, or other solid materials more than <br />224 6 inches in greatest dimension removed on the project may be disposed o:F in embankment side <br />225 slope aeeas not supporting the roadway shoulders and pavement structure, as defined above. <br />226 These materials shall be placed in layers; the thickness of each layer shall be less than 1'/: times <br />227 the following maximum allowable dimensions. <br />228 <br />229 Rocks and concrete shall not have any single dimension greater than 2 feet and asphalt shall not <br />230 have any single dimension greater than 12 inches. Each layer shall be sepazated by a minimum of <br /> <br />231 <br />6 inches of compacted and approved embankment material. No layer shall be within the top 2 ' <br />232 feet of the subgrade or final finished side slope surface. These materials shall be placed as the <br />233 embankment is being constructed. Excavation of in-place embankment to accommodate disposal <br />234 of materials shall not be permitted. <br />235 <br />236 When embankment is placed on a slope that is steeper than 4:1, as measured in the steepest <br /> <br />237 <br />direction, the embankment shall be continuously benched as the work is brought up in layers. ' <br />238 Benching shall be well keyed and, where practical, a minimum of 8 feet wide. Each horizontal <br />239 cut shall begin at the intersection of the original ground and the vertical sides of the previous <br />240 bench. Excavation from benching shall be compacted along with the new embankment material <br />241 at the Contractor's expense. <br />242 <br />243 Where embankment is to be placed and compacted and end dumping is permitted, the slopes of <br />244 the original ground or embankment shall be deeply plowed or cut in^do before starting end <br />245 dumping. <br />246 <br />247 Where the base of embankment is within 4 feet of the subgrade, all sod, and vegetable and other <br />248 organic matter shall be removed from the surface upon which the embankment is to be placed. <br />249 The cleared surface shall be completely broken up by plowing or scarifying to a minimum depth <br />250 of 6 inches, and compacted to the specified embankment density. Sod not :requiring removal shall <br />251 be thoroughly disked prior to embankment construction. <br />252 <br />253 If embankment can be placed on only one side of structures such as retaining walls, abutments, <br />254 wing walls, piers, or culvert headwalls, compaction shall be accomplished without overturning of ' <br />255 or placing excessive pressure against the structure. When noted on the plans, the fill adjacent to <br /> <br /> 3~ <br /> G \101\00100.02W\Reports\KP\Tecnruwi SpaciTCations eoc February 3, 2006 <br />~J <br />