M and R to Shahad Water Works.....Repairs to Filter Bed No.9 along with allied repairing works at Filter House Stage-II, WTP Shahad

Item no.01 Removing the existing filter media sand& supporting gravel fromthe filter bed i.e.any lead & lifts i.e. screening thegravelwithapproriate meshsieve&stacking themedia& travel as directed by the Engineer incharge.

Item no.02 Dismantling the R.C.C. Work 1:2:4 andsortingoutthematerialssuchas steel etc. as directed and stacking themwithin the specified lead as directed etc. complete.

Item no.03 Cleaning & washing of existing v-wire Laterals by using specialized acidic and alkaline chemicals to remove Scale, Sludge and other sedimental partials from lateral surface. including all material chemicals, labour etc.

Item No.04 ProvidingV-wireunderdrainsystem withV-wirescreenmadeof SS304 fittedonUPVCbasepipe3.5"dia,V wirescreenhavingscreenslotof350 micronshaving16%openareabase pipeof laterals3"diaUPVCSCH40. Tee for main manifold with air distributionismadeofUPVCfittings, Air clamp withmain header is of UPVC saddle with SS 304 nuts & bolts

Item No.05 Providing and casting in situ C.C. of trap / granite/ quartzite / gneiss metalofapprovedqualityforRCC works as per detailed drawings and designs or as directed by Engineer-in-charge including normal dewatering, centering, formwork, compaction, finishing theformedsurfaceswithC.M.1:3of sufficientminimumthicknesstogive a smooth and even surface wherevernecessaryorroughening if special finish is to be provided and curing, etc. complete. (By weigh batching and mix design for M-250 and M-300 only. Use of L&T, A.C.C., Ambuja, BirlaGold,Manikgad,Rajashree,etc. cementispermitted.)(ExcludingM.S.or Tor reinforcement) 5.1 Slabs / Landings / Vertical Walls / Wai st Slabs / Steps for Staircase In RCC M-200

Item no.06 Drilling holes in existing concrete structureforreinforcementanchoring withthehelpofHILTY-500chemical including locating existing reinforcementwiththehel pofdevice PS-35 including all labour material machinery transportation charges excludingcost of reinforcement. For 12 mm dia

Item no.07 Providing and fixing in position steel bar reinforcement of various diameters for RCC piles, caps, footings, foundations, slabs, beams, columns, canopies, staircases, newels, chajjas, lintels, pardies, copings, fins, arches, etc. asperdetaileddesigns,drawings andschedules; includingcutting, bending, hooking the bars, bindingwithwiresortackwelding and supporting as required, etc. complete(includingcostofbinding wire). (Bd-F- 17/306) 7.1 Corrosion Resistant Steel (Fe 500)

Item No.08 Laying of V- wire under drain systemincluding laying& fixing the laterals inpositionas shown in the drawing.Fixingendcaptooneend& ‘T‘ to the other end of the lateral. Fixing separate air header with coupler over the ‘T‘ of the lateral connectingair nipplebetween ‘T‘ of the lateral and air header with coupler whole assembly arranged as per drawing over the manifold.

Item no.09 Supply of Filter media fine quality sand from any source having effective size 0.45 to 0.70 and uniformity coefficientwithin the limit of 1.3 to 1.7withinpremises asper IS:8419 Part-I of 1977 including transportation, loading, unloading, stacking and for all leads.