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' <br /> Kni ght Piesold <br /> GONSULTINO <br /> <br /> 256 the abutment of a bridge shall not be placed higher than the bottom of the backwall until the <br /> 257 superstructure is in place. When embankment is placed on both sides of a concrete wall or box <br /> 258 type structure, the embankment shall be brought up equally on both sides of the structure. <br /> 259 <br />' 260 <br />261 Embankment shall be placed in horizontal layers not to exceed 8 inches loose measurement and <br />shall be compacted as specified before the next layer is placed. Spreading equipment shall be <br /> 262 used to obtain uniform thickness prior to compaction. As the compaction progresses, continuous <br /> 263 <br />264 mixing, leveling, and manipulating shall be done to assure uniform moisture and density. <br />Bridging across streams, ponds, and swampy ground may be placed in layers greater than 8 <br /> 265 inches as directed. When embankments are constructed using claystone or soil-like non-durable <br /> 266 <br />267 shale as identified in the plans or by the Engineer, the material shall be pulverized to a maximum <br />dimension of 12 inches in diameter, placed in a maximum layer thickness of ]2 inches and <br /> 268 watered to promote slaking and breakdown of the nondurable material in conformance with <br /> 269 subsection 203.07. <br /> 270 <br /> 271 Excavated material containing particles greater than 6 inches in greatest dimension shall not be <br /> 272 used as embankment material unless designated in the Contract or approved by the Engineer. <br /> 273 When the excavated material consists predominately of rock too large to be placed in 8 inch <br /> 274 layers, the Engineer may permit the material to be placed in thicknesses up to the average rock <br /> 275 dimension, not to exceed 3 feet. Placing of occasional boulders of sizes larger than the maximum <br /> 276 layer thickness may be authorized by the Engineer. Each layer shall be leveled and smoothed by <br /> 277 distribution of finer material or approved embankment material. If the use of leveling equipment <br /> 278 is not practicable the Engineer may permit rock fill material to be cast or end dumped. In such <br /> 279 cases sufficient hand or machine work will be required to construct a compact, stable fill and to <br /> 280 finish the slopes to a neat and smooth appearance. Each layer shall be compacted as specified in <br /> 281 subsection 203.08. <br />' 282 <br /> 283 Rock fill, or claystone or soil-like non-durable shale, or both shall not be constructed above an <br /> 284 elevation 2 feet below the finished subgrade. The top 2 feet of the embankment shall be placed in <br /> 285 layers not to exceed 8 inches loose thickness and compacted in accordance with subsections <br /> 286 203.07 and 203.08 as applicable. When a rock fill is placed over any structure, the structure shall <br /> 287 be covered with a minimum of 2 feet of compacted embankment material or other approved <br /> 288 material before the rock is placed. <br /> 289 <br />~' 290 Cross hauling may be used to insure that the best available material is placed in the top 2 feet of <br /> 291 all embankments. When directed by the Engineer, cross haul will be paid for in accordance with <br /> 292 subsection 109.04. <br /> 293 <br /> 294 Frozen materials shall not be used in construction of embankments. <br /> 295 <br /> 296 During the construction of the roadway, the roadbed shall be maintained so that it is well drained <br /> 297 at all times. <br /> 298 <br /> 299 203.07 Construction of Embankment and Treatment of Cut Areas with Moisture <br /> 300 and Density Control. Soil embankments shall be constructed with moisture and density <br /> <br /> 3-7 <br /> G 11 0110 01 0 0.01V~1Reports\KP\Tetliniwl 6peuficalions.EOC Febuary 3, 2006 <br /> <br />