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After removal of the forms, suitable :naterial shall be backfilled <br />and tamped into place ���ith suitable tampers satisfactory to the 1alat4r <br />Supei•intet�defrt, e:ccept wnere gravel drains shall be placed, The cost of <br />this backfiIDling and tamping shall be included in the price bid per <br />cubic ��ard of concrete riUs. <br />The price of forms shall be included in the price bid per cubic <br />S'a=d of "Concretg Ribs." <br />44.-..PI,pCI_IG CONCREI'E:, <br />44a.--Concrete Ribs: <br />Immediately prior to placing the concrete, forms shall be cleaned <br />out and thoroughl,y wet, but shall show no pools of water where the con- <br />crete is pl2ced, and if the �7ater 3uperintendent direct, shall also be <br />saturated the evening before, <br />Conerete prepared as per epecifica�ion� hereinbefore given, shall <br />be deposited rapidly in the rib forms in successive batches and in a <br />continuoua operation, and in case of a breakdo�vn concrete shall be mix- <br />ed by hand to comple�e a rib, Any concrete in excess of that needed to <br />complete a rib at the stopping of work shall not be used. <br />Concrete shall be tamped with <br />leae than eight (8) pofinds,- Unless <br />int�dentit will not be required to <br />iron shod tamping bars weighing not <br />specially required by Water 5uper- <br />sPade faces. <br />Concrete viill not be allowed to be spouted. <br />slopes�ofCthe basinwaslresardsuconsistency of uconcretetandrworgi„gthe <br />Concrete shall be mixed as dry as practical and shall be thorou�hly <br />worked. Concrete shall always be laid up l:ill, <br />Top of concrete shall be struck off �aith a strike board, with a <br />sawing motion, and surface shall be left free from depreasions or <br />unequalities of any kind, and o£ a true line and grade �vith the edges <br />of the forms. Surface �hall be steel troiveled, <br />C uring and protecion shall be the same as for <br />Only protective work will b� allowed to be done on <br />firat twenty_fo� (2�) hours, A?o ivalking on them, <br />etc, shall be allowed ;�ithin that time, <br />Slabs will not be allowed to be laid on top of <br />tm�enty-four (24) ]iours. <br />18, <br />the concrete slabs. <br />the ribs for the <br />removing of forms, <br />the ribs ��-ithin <br />