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'ermanent er [emporary horizontal bracing is in place on horizontally 1 <br /> supported walls. <br /> � <br /> '� Grour.d Surface Preparation: Remove ve��etation brush deb�, unsatisfac[ory � <br /> soil materials, obstructions, and deleterious ma[erials from ground surface <br /> prior to placement of fills. Plow s[rip, or break-up sloped surfaces steeper 6 <br /> tl:an 1 vertical to 4 horizontal so that Eill material will bond wi[h existing � <br /> surface. <br /> 8 <br /> When existing ground surface has a densi[y Less than that speciEied under 9 <br /> "Compaction" for the pa*ticular area classification, break up the ground 10 <br /> surface, pulverize, meis[ure-conditLon to [he optimum moisture content, and 1� <br /> compac[ to required depth and percentage of maximum density. <br /> 13 <br /> Placement and Compaceion: PLace backfill and fill ma[erials in layers not more. 14 <br /> than 3" in loose depth for material compac[ed by heavy compaction equipment , and 15 <br /> not more than 4" in loose depth for m�terial compac[ed by hand-operated tampers. 16 <br /> � 17 <br /> Before compaction, moisten or aerate each la er as necessar t� 18 <br /> Y y provide the 19 <br /> optimum moisture content. Compact each layer to required percentage of maximum <br /> density for eacli area classification. Do not place backfill or Ei11 ma[erial on Z� <br /> surfaces that are muddy, frozen, or contaia frost or ice. Z1 <br /> i <br /> 22 <br /> Flace backfill and fill materials evenly adjacent tu structures , [o reauired Z3 <br /> , , elevations. Take care to prevent wedging action of backfill against s[cuctures Z4 <br /> by carrying the material unifornly around s[ruc�ure to 2.porosimately the same ZS <br /> elevation in each lift. 26 <br /> 27 <br /> 28 <br /> GRADING: 29 <br /> 30 <br /> ' General: Uniformly grade areas within Limits of grading under this section, 32 <br /> incl�ding adjacen[ transition areas. Smoo[h finished surface within specified <br /> tolerances, compact with uniform levels or slo es between 33 <br /> j P points where eleva- 34 <br /> tions are shown, or br.tween such poirits and existing grades. <br /> � 35 <br /> Grading Outside 6uildin� I.ines: Grade areas adjacent to building lines to drain 36 <br /> I away :rom structures and to revent 3� <br /> p ponding. Finish surface:, free from �a <br /> irregular surface changes, and as follows: <br /> j 39 <br /> I � Lawn or Unpaced Areas: Finish areas ce receive eopsoil to witnin not r„�re 40 <br /> than O.1G' above or below the required subdrade e!eva[io�s. 41 <br /> I 42 <br /> Walks: Stia e surface of areas under walks [o line 43 <br /> I P , gradt and cross- ��4 <br /> section, with finish surface n�t more [han 0.10' above oi below the 45 <br /> required subgrade elevation. 46 <br /> I Pavements: Sha e s�rEace of areas under avemen[ [0 line 47 <br /> — � P , grade and cr�ss- 48 <br /> section, with Einish surface not more than 1/2" above or Selow the reauired <br /> � subgrade elevation. 49 <br /> � 50 <br /> � I Grading Surface of Fil1 Under BuildinF Slabs: Grade smooth and even, free of 51 <br /> � voids, compacted as speciEird, and to required elevation. Provi.de final grades SZ <br /> I witliin a tolerance of 1/2", when tested wi[h a 10' straigh[edge. 53 <br /> 54 <br /> � 55 <br /> � S�f-IV � 56 <br /> � EARTH{JORK 02200 - 6 <br /> � Ev r2ETT 1�e � L. <br /> �-.. <br /> .r <br />