1925 (#1403-1607) - Laserfiche WebLink

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2:27 opDortunlty to check tt~e number of sacks of cement on each batch beeore the sacks ~re openea. Ths mass shall be turned with shovels two (2) times dry and two (2) times wet, not including shoveling into wheel- barrows. The specified amount of water ~ha]l be supplied in a sprmy during the wet turns. (d) R~,~I¥ING CONCR~TE. No concrete shall be used which has partially s~t, and no concrete shall be retempered or remixad. SECTION v. All forms shall be smoc~th, ti~bt, true to the re- qutrsd lines and elevations and secure]2 braced and tied to prevent their ~ovement or deflection during the placing the ramming of tvs co,crete. Forms shall be cleaned of a~] morta~ dirt and shavings and shall be thoroughly wet i~medlately be- fore the placing of t~e concrete. The time for removal of forms shall be determined by the Superintendent of Streets. During the setting of the concrete and before the removal of the forms, no extraneous loads ahall be placed upon the con- cress. In removing forms extreme care must be taken neither to deface the structure nor to disturb the remalniug supports. SE~CTION 8. wI~CTNC AN? FIN~SM!NO CONCRETE. After bein~ mi~ed, concrete shall be handled rapidly, in as s.ha~l batches ss practicable, from the p~oce of mixing to the place of fln~ deoosit and s~a]~ be derosited and maul- pulated in a manner ting and to prevent insure the complete that wi~] insure the most thorough compac- voids or pockets. Care sba~] be taken to co,ting of all parts of the reinforcement with mortar. T~e concrete sh~l be spaded in a manner such t~at t~s finer parts will be in con~aot with the faces of the forms thereby leaving the surface of the structure smooth and free from pockets. No co,crete sha~l be deposited from a height, but must be lowered into position. When Joinlug new concrete with concrete already set, the ~urface of~tbe old concrete shall be cleaned, roughened, thoroughly wet aha then coated with thin, neat cement mortar. Tbs surface of concrete which is ~]lowed to set sba]~ be left rough so as to insure a ~oud bond. All c~ncrate sha~ be kept t~orou~hly wet for a period of seven (V) days after being placed. In all p3nces where water is encountered i~, placing concrete foundations or other parts of ouy structure, the contractor must provide s~it~le means t~ keep th~ work free from such water during placing and for a period of twelve (1~)hours thereafter. After the forms haw been removed, all prominent ridges and other irregularities on the surface of the concrete shall be rubbed down with a carborundum block or removed with s chisel. All '~ ~ ' sr~ect~rg tie wires shall be cut beneath the