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of backfilling may be compacted by puddling with hose and Iong pipe nozzle, or
<br />' by flooding the trench, as the backfilling is accomplished above the pipe zone
<br />by any mechanical means or otherwise, at the option of the Contractor. It is
<br />important that proper precautions be taken to prevent flooding of the pipe when
<br />� flooding the trench, and the Contractor shall be wholly responsible for neglect
<br />of these precautions.
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<br />23062.4 PROCEDURE WH�RE SETTLEMENT IS IMP�RTANT: (Type "C") Succeeding layers of back-
<br />fill may contain coarser material and shall be £ree from pieces of rock, con-
<br />crete, or clay lump more than one-third cubic foot in volume, roots, stumps,
<br />tin cans, rubbish, frozen materials and oCher similar articles whose presence
<br />in the backfill would cause excessive settlement. This type of backfilling
<br />shall be placed in uniform layers, before compaction oI approximately 6 inches,
<br />tamped by rnect�anica 1 means .
<br />23062.5 PROCEDURE WtiERE SETTLErtENT IS Ir[PORTAiVT: (Type "D") Succeeding layers of
<br />backfill shall be made of selected materials meeCing requirements as set Eorth
<br />in Lhe "SPECIAL PROVISIONS". This type oL backfilling shall be pl�ced i.n
<br />uniform layers, before compaction, oC approximately 6 i,nci�es, tamped by
<br />mechai�ical means. 1[ shall be the ciuty o[ t��e C�ntractor to remove cxcavat�d
<br />materials no[ i►sed in backfillin�; to a lacation as desi�nated in the "SI�ECIAL
<br />PRQVISIUNS",
<br />23062.6 [)E1�ICYL'�vCl' QI' 2�ACK1�II.L, t�1' tJt10;( 511N�'I,1�U: Any deficier�ey in C6�e guancity af
<br />material fur bAckfillin�; tijc �rcne�ics, o�• for f�llin� de�r�ssiu��A causec� by
<br />sectic�nent shaIl bc s�:qptted lav tl�e Cc.���t:•actor.
<br />23062. 7 RFS`IQ�f►`I']Oi� OH Sttfzi�rlt;i;: When (`I�4�pe '�A,�} b�ek�i 11 in� nr�c�dure is o,��c�. �xeesa
<br />dirC �l�nll b� ��c#aCl�• r<���ncled c�v�r eije ercneh Cc� a�u�'fict�nt �IE�i�;hc c�u all�w
<br />f�ar ;�et�lea���nt e,o �;rac3�� �,frc�r c=�ns;alida�ti+�n. t�nt�+ �xec�s� ciirt c�r��.�t��al�nt tc�
<br />cli8plAc�ment t�y s[rucr.urt�s st�nl i t�t� rc►t��v�d ��� tite Ct���crme[t�r �5 s���cifi�d in
<br />tt�� "SI'h;(: I,'11, E'E:C�t' 1 S It;�>:��;" .
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