taking down of existing double reduction gear box with impellerpaddie fan shaft assemebly complete coupled with 3 phase 415 v electric induction motor up to 1hp mountain on common ms base framestructure and deposited to mes yard of ge army jamnagar complete all as specified and directed by engineer-in-charge, taking down of existing triple reduction gear box with impellerpaddie fan shaft assemebly complete coupled with 3 phase 415 v electric induction motor 3 hp mountain on common ms base framestructure and deposited to mes yard of ge army jamnagar complete all as specified and directed, repair and overhauling of existing alum mixermixing chamber including complete cleaning and removal of sludge deposited alum loose concrete damaged plaster and unwanted materials from the chamber and surrounding area cleaning and preparation of internal surfaces carrying out necessary pcc repair to damaged portions repairing cracks honeycombed and damaged concrete surfaces with suitable cement mortarrepair mortar providing cement plaster to internal surfaces wherever required providing suitable waste-water outlet arrangement for draining the accumulatedwaste water from the chamberdrain including making necessary opening in the existing wall providing suitable size giupvc pipe outlet with heavy-duty tapvalve socket bend coupling and other required fittings properly sealed and grouted in the wall including necessary civil work testing and making good the surrounding surface complete all works shall include labour materials tools and tackles scaffolding transportation debris removal curing and finishing complete in all respects as required for satisfactory operation of the alum mixing system complete cleaning and making the chamber fit for operation, m l for cleaning and plaster repair of two side drainage channels each approximately 1000 m long 005 m wide including removal of sludge silt and deposited material surface preparation pccrepair wherever required cement plaster to sides and bottom proper slope towards outlet curing and complete cleaning, m l for systematically inspecting disassembling and replacing worn internal gear bearing and seals of double reduction gear box having two-stage reduction ratios of 301 and 251 giving an overall reduction ratio of 7501 complete with heavy-duty cast ironsteel housing hardened alloy steel gears precision machined shafts bearings oil seals lubrication arrangement inspection cover and all necessary accessories coupled with 1 hp 3-phase induction motor suitable for 415 v 50 hz ac supply complete with flexible coupling coupling guard ms base frame foundation bolts alignment lubrication oil and all necessary accessories including installation testing and commissioning complete as required and directed, m l fo systematically inspecting disassembling and replacing worn internal gear bearing and seals of triple reduction gear box comprising three-stage reduction arrangement with individual reduction ratios of 601 501 and 151 giving an overalltotal reduction ratio of approximately 45 0001 complete with suitable heavy-duty cast ironsteel housing hardened alloy steel gears shafts bearings oil seals lubrication arrangement inspection cover and all necessary accessories coupled directly with 2 hp electric indicator motor suitable for 415 v 3-phase 50 hz supply complete with flexible coupling base frame foundation bolts alignment lubrication oil and all accessories as required and directed by engineer-in-charge, m l for supply laying jointing commissioning and testing of ms erw flanged pipe heavy grade isi marked of 100 mm bore as in network for filter water back wash air grid piping perforated type 3mm dia drilled hole in every 100mm in zig zag pattern for rapid filter tank laterals by making necessary holes as directed and header connecting filter beds and fitted with existing pipes including all required modification for connection by required mscidi fittings with including epoxy painting of external surfaces fitted at filter bed as per standard design specifications including taking up or down existing ms pipe of 100mm bore of any description complete all as specified and as directed, ml for pcc 124 type b2 using 40mm graded stone aggregate as in foundation filling and mass concrete all as specified and directed, m l for cleaning of area around filter plant including removal of bushes grass weeds rubbish loose earth debris and other unwanted materials uprooting of vegetation collection and disposal of waste to approved dumping place dressing spreading and leveling of existing earthsoil including filling of minor depressions cutting of high spots rammingcompaction and making the area even and suitable for proper drainage complete as directed by engineer-in-charge, m l for providing and laying factory-made cement concrete interlocking paver blocks of approved quality 80 mm thick of approved colour shape and pattern over prepared sub-grade including dressing and leveling of ground providing and compacting granularsub-base as required laying and compacting 4050 mm thick coarse sand bedding laying paver blocks to required line level and slope filling joints with clean fine sand mechanical compaction with plate vibrator cutting of blocks at edges and all incidental works complete as directed by engineer-in-charge
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