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� � to p�'ovide a clearance ot aL le.ast 6 inches below outside barrel of the �ipe, valves, or fittings, and to a clear width of 6 inches on each side of all pipe and appurtenances ior pipe 16 inches or less in diame�er; for pipes iarger than 16 inches, a clearance of 9 inches belo�.� and clear �ai�3th ot 9 inches on each side of inside diameCe.r oi pipe st�all be provided. ,��dequate cleararice for pro- perly jointing piQe laid i.n i�ock trenches shall be pr��vided at be11 holes. 23Q55.7 PIPE FOUNDATION tN KOCK: The spdce �etween the bottcrm of Lhe trench and. rock and the bottom �i the pipe shall be backtilled with suit�ible ma.terial LhorotGghly tamped. Gener�al speaking, the material zrom the tren.ch excavation, othF:r than rock or boulders, sha11 be �_onsidered as suitable mat:erial. No additioiia� com�- pensation far placing or tamping this material shall be allowed HowevE�r, in the event that the "SPECiAL PROVISIONS" do not specif ica:I.Iy provide othercai;�e, addz- tional compensacion shall 'oe only tor the hauling ii:� the material to tlne top of the trench and shall ziot iriclude any extra compensation for placing and tamping of the materidl in thE� trench. Hauling ot the matertal sha11 be paid for as specified in the "GENLRAL �OI�'DITIONS" under unclass:ified work or. as directed in the "SPECI,AL PROVISIONS . 23055.8 SUB-GRADE IN ROCK TRENCH: Excavations below sub-grade in xock ar in ��oulders shal.l be r.efilled to sub-grade with approved material, thoroughly compacted, Hauling and placing of such �pproved material shall be paid ror as specified under uilclas�ified work or as directed �n che "S�'ECIAL PROVISIONS". 23055.9 SOLID ROCK EXCAVATiON DEFINED: Solid iock excavation shall include such rocks as are not de�omposed, �aeather�:d or shattered and whic.h will require blasting, Uar.ring, wed�ing or use of aii tools �.or removal. Under this classification shall be included the removal o.t any concrete or masonry structure (except concrete pavement, cucU, gutter and s�.dewalk) exceeding one-quazter (1/4) cubie yarcl in volume that mav� be encauntered in i:11P_ work. 23Q55.10 LOOSE RQCK EXCAV�IT.LON DE�INED: Loose rock shall include all stratified rock, slide rock, sanclstonE, cemented gravel, shale and boulders not other�oise defined as solic3 rock, regardle5s of ho�a removed. 23055.11 BLASTrN� PROCI;DURL: The hours of blasting will be fixed by the Engineer. ThP Cont.ractor's meti�od of proced��re relative to blasting shall conform to local � and state laws and muni��i a.1 ordinanc_es, 23055�12 BR�1CI:'D AND SHT�C?TI.NG 1'RI:\CFIE:�: lti'1lerever neceasary to prevent caving, excavations in san�l, �ravel sandy s:>il, or ocl-�er unstable material shall be adequately s�ieeted and braced , lti'hec e sl�eet ing and bracing are used, the tr.ench width shall be increased a�c��rdLI1i;L\'. 'Trench 5heeting shall remain in place until pipe has be�i� laid, t�s�ed � �r u�t t� �:� ��1 rtPa Li Pd it necessary, and the earth around it c��mpacted Lo .� deptli of une i��ot ��ver che top of the pipe. Sheeting ordered lef�t in pl.i�e s}i�ill he p��id i o: �it tlle un�.t price bid. 73a55.13 `tANNER OF PI.I..I\G 1?.l'Cr1�'�'1"f[;ll `1�1'I'l:hl��L: A].1 excavated material shall be piled in a❑latl[1�� th<+t �ti�ill I1i�C eilcl.�n�,cr the �aorl: ;�nd that will avoid obstructing side- �,��31ks ac�d dr.�1.��i:w:i��ti Gu�t��r5 sh,�11 1�� kepr_ �lear or ocher satisfactory provi- S1ot15 tnadC i(>;' sttc�ct tlr��l.n<;�;C. 23055.1.4 b....itLCElU1:5, GUAI�.11S :1'�l) ti�"+I�f:'I�1' NR��\'L:�1ONS: I'o pro�ecc. persons irom in�ury and to nvo_�cl pr��p��rt�� i��m�tsr,��, ,��i�'cl��'t� h��rri�<+des, construction signs, [,orches, red � 3Ol)O - 5