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A:l placus needin� i � s;izll ue ��'1JL'^L'�:L'',y ta�nucd ��rith a hand tamp <br />we�.ghin� noi iess •tl�zn �ccrent,y five 12�) pcun�is, the face of which <br />3n•:11 noi exceed tAr�enty (20) sq_uare inclies i�i area, Especiam care <br />shall be taken to see that materi3l is comp�eted around concrete riba. <br />No uncompacted n:aterial shall be left on trie suU-grade� and tYiis <br />neeeseitates �amping the whole sub�rade area, ��here conaidered neces- <br />sary or of assistance in producing a compact, solid surface; the <br />eubgrade•, before compacting, s:�zll be well s�rinkled e�ith water if so <br />ordered by the 1�ater Superincen3ent. <br />If deemed advisable b,y �Jater Superintendent, on account of wea- <br />ther or other conditions, the si:: inch layer left after �the basin ex- <br />cavation has been roughed out� shall not be re,-noved until immediately <br />before p�acing the concrete slabs, or for only such distance ahead of <br />their placin� as he may direct. <br />Prepara�ion of sub-grade shall include corapacting, wetting, finish- <br />ina and other work incidental thereto. <br />No concrete shall be deposited until �he level of the subgrade is <br />caPc;ked and a,ccepted by the �Vater Superintendent. <br />TP.� sub-grade 3ha11 be thoroughly wet tlle evening before the <br />�o:tcreta is to be placed, and shall be thor�u�hly v+et just before the <br />co�irzete ia placed, but no concrete shall bedeposited in pools of <br />w3�c cr. <br />A17. work incidental to the prepara��ion of the sub-grade shall be <br />1�1�1�•�e�i in �he price bid per cubic yard for "Concrete in fieservoir <br />8t�.be" . � <br />Uuon the sub-arade tlius formed shall be laid the concrete as <br />ehocm �n the nlans. <br />After preparing the sub-grade as above specified, all unnecessary <br />hauling etc, over same shall Ue kept off, Should it be found neces- <br />sary to haul �he sand, gravel and cemen� over same. all cuts, ruts� <br />5reaks in the surface of the sub-grade so resultin�, shall be r�ked <br />�v hand and tamped immediately p�eceding �the placing of the conerete. <br />If, in the opinion of the 4/ater uperintendent, it should be necessary <br />t.`�e contractor will be required "at hi3 o��m expense� to p�a,nk the sub- <br />g.ade before haulin� ;naterials or equipnent over same. <br />4G.-�FOI',i�.iS F0� SLA �5: <br />All forms for the slabs shall be of wood and shall be free fi7u <br />warp and shall have sufficient atrength to resist springing out of <br />shape. �11 lumber for for;ns shall be good merchentable fir, clean. <br />gour.d, mell seasoned and free £rom defects. <br />16, <br />