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• Section 10-isonstruction Details <br /> Standard Specifications Section 14 Special <br /> Page 7 of 7 <br /> If pressure loss exceeds 10 psi, provisions shall allow for <br /> repressurization and/or grout addition at the cap without loss of <br /> remaining pressure. Grout shall be poured by methods that prevent <br /> free fall, dilution, and/or separation of aggregates from the <br /> cementing materials. Water shall be free of oils, salts, or other <br /> impurities. Foreign material which falls into the wells prior to <br /> or during placement of grout shall be minimized. The pressure <br /> shall be maintained on the grouted zones for a minimum of 4 hours. <br /> The grout shall be allowed to spill over into the excavation <br /> described in Section 14-2 . 3 to form a cap. The cap shall be a <br /> minimum of 6 inches thick. To assure each well has been completely <br /> grouted, Engineer shall verify that the volume of grout placed in <br /> the well is equal to or greater than the volume of the empty well. <br /> Specific grouting specifications unique to each well are <br /> described below: <br /> Sand-cement Neat-cement <br /> Well grouted interval (bgs) crrouted interval (bas) <br /> LVMD1 -- 4 . 5' to 187 ' <br /> LVMD2 -- 4 . 5' to 1601 <br /> LVMD4 130'-195' 4 . 5' to 130' <br /> LVMD6 -- 4 . 5' to 254 ' <br /> Neat-cement grout shall have a water-cement ratio not <br /> exceeding 0.45 or 5 gallons per 94 lb. sack of cement. Sand-cement <br /> slurry shall have a water cement ratio not exceeding 0. 60 or 6. 75 <br /> gallons per 94 lb. sack of cement and a minimum cement content of <br /> 9 sacks per cubic yard. Portland cement used in grouting materials <br /> shall conform to ASTM C150, Type IIA. <br /> The contract price paid for pressure grouting shall include <br /> full compensation for furnishing all labor, materials, tools, <br /> equipment and incidentals, and for doing all the work involved in <br /> placing the grout materials down-hole and maintaining the pressures <br /> as required by these special Provisions. <br /> The contract unit prices paid for grout (neat-cement) and <br /> grout (sand-cement slurry) shall include full compensation for <br /> furnishing all labor, materials, tools, equipment and incidentals, <br /> and for doing all the work involved in furnishing the respective <br /> grout material for placement down-hole. <br /> No adjustment of compensation will be made for the respective <br /> unit items of grout for any increase or decrease in the quantities, <br /> regardless of the reason for such increase or decrease. The <br /> provisions in Section 4-1.03B, "Increased of Decreased Quantities" , <br /> of of the Standard Specifications shall not apply to the various <br /> items for grout. <br /> 14-2 .5 SURFACE REPARATION AND COMPLETION <br /> 6691WEMSEMON.14 <br />