cleaning of oh reservoir , service water tank , ug sumps and connected works at chaf bangalore , de-watering , removing all mosses , algae and dirt from internal walls , floors & mouths of pipes of rcc overhead reservoir/ under ground sump by using steel wire brush and cleaning with high pressure industrial vacuum cleaner including removing of dirty water completely using sludge pump set and disposing off the same to a safe distance and applying of anti bacterial sterilization spray to internal surfaces using zero bacterial compound ( sodium hypochlorte ) or equivalent approved chemical complete and writing the date of cleaning on outside of tank/ sump using synthetic enamel paint of white colour over black background with letters of schze 100mm height x 100mm breadth complete all as specified and directed for the oh reservoir of 75000 gallons capacity with 24 metre staging all as specified and directed . , all as per sch item no 01 here in above but for overhead reservoir 50 , 000 gallons capacity with staging exceeding 15 metres and not exceeding 24 metres all as specified and directed . , all as per sch item no 01 here in above but for overhead reservoir 15 , 000 gallons capacity with 6 metres staging all as specified and directed . , all as per sch item no 01 here in above but for overhead reservoir 5000 gallons capacity with staging of 6 metres all as specified and directed . , all as per sch item no 01 here in above but for ug sump 2 , 00 , 000 gallons capacity all as specified and directed . , all as per sch item no 01 here in above but for ug sump 1 , 50 , 000 gallons capacity all as specified and directed . , all as per sch item no 01 here in above but for ug sump 1 , 25 , 000 gallons capacity all as specified and directed . , all as per sch item no 01 here in above but for ug sump 20 , 000 gallons capacity all as specified and directed . , all as per sch item no 01 here in above but for ug sump 10 , 000 gallons capacity all as specified and directed . , de-watering , removing all mosses , algae and dirt from internal walls , floors & mouths of pipes of rcc overhead tanks ( service tanks ) by using steel wire brush and cleaning with high pressure industrial vacuum cleaner including removing of dirty water completely using sludge pump set and disposing off the same to a safe distance and applying of anti bacterial sterilization spray to internal surfaces using zero bacterial compound ( sodium hypochlorte ) or equivalent approved chemical complete and writing the date of cleaning on outside of tank using synthetic enamel paint of white colour over black background with letters of size 50mm height x 50mm breadth , complete all as specified and directed for oh service tank upto 500 litres capacity all as specified and directed . , all as per sch item no 10 here in above but for oh service tank exceeding 500 litres and not exceeding 1000 ltrs capacity all as specified and directed . , all as per sch item no 10 here in above but for oh service tank exceeding 1000 litres and not exceeding 2000 ltrs capacity all as specified and directed . , all as per sch item no 10 here in above but for oh service tank exceeding 2000 litres and not exceeding 5000 ltrs capacity all as specified and directed . , de-watering , removing all mosses , algae and dirt from internal walls , floors & mouths of pipes of pvc overhead tanks ( service tanks ) and cleaning with high pressure industrial vacuum cleaner including removing of dirty water completely using sludge pump set and disposing off the same to a safe distance and applying of anti bacterial sterilization spray to internal surfaces using zero bacterial compound ( sodium hypochlorte ) or equivalent approved chemical complete and writing the date of cleaning on outside of tank using synthetic enamel paint of white colour over black background with letters of size 50mm height x 50mm breadth , complete all as specified and directed for oh service tank upto 500 litres capacity all as specified and directed . , all as per sch item no 14 here in above but for oh service tank exceeding 500 litres and not exceeding 1000 ltrs capacity all as specified and directed . , all as per sch item no 14 here in above but for oh service tank exceeding 1000 litres and not exceeding 2000 ltrs capacity all as specified and directed . , all as per sch item no 14 here in above but for oh service tank exceeding 2000 litres but not exceeding 5000ltr capacity . note for sl sch item no 01 to 17:- ( i ) any damage caused to tank , lid , ball valve , pipe line and connected items during cleaning shall be repaired or replaced by the contractor without any extra cost . ( ii ) any damage caused to fresh water line / inlet tank pipe line over the building and connecated item shall be repaired or replaced accordingly . ( iii ) after tank cleaning register to be mantained for obtaining signature from users and submitted to concernt sub-divison before processchng rar . ( iv ) cleaning of tank shall be carried out as per site requirement complete all as specified and directed . , s&f in replacement gun metal gate or globe valve , heavy duty , isi marked , with iron wheel head screwed both end for 15mm bore gi tubes , fixed in repairs , all as specified and as directed . , all as per sch item no . 18 here in above but for 20mm bore gi tubes all as specified and as directed , all as per item no . 18 herein before but for 25mm bore gi tubes all as specified and as directed , all as per sch item no . 18 herein before but for 40mm bore gi tubes all as specified and as directed , all as per sch item no . 18 herein before but for 50mm bore gi tubes all as specified and as directed , s&f in replacement ptmt ball valve , high pressure , with epoxy coated aluminium rod and high denschty plastic ball screwed for 15mm bore gi tubes , fixed in repairs , all as specified and as directed . , all as per sch item no . 23 here in above but for 20mm bore gi tubes all as specified and directed . , all as per sch item no . 23 here in above but for 25mm bore gi tubes all as specified and directed . , all as per sch item no . 23 here in above but for 40mm bore gi tubes all as specified and directed . , all as per sch item no . 23 here in above but for 50mm bore gi tubes all as specified and directed . , s&f in replacement pvc lid suitable for pvc tanks of capacity 500/1000/2000 litres , fixed in repairs all as specified and as directed . , taking down steel tubing and connections of size 15mm bore including cleaning , threading for re-fixing or removal of unserviceable pipe from site of work complete all as directed . , all as per sch item no . 29 here in above but 20mm bore all as specified and directed . . , all as per sch item no . 29 here in above but 25mm bore all as specified and directed . , all as per sch item no . 29 here in above but 40 & 50mm bore all as specified and directed . , re- fixing 15mm bore gi tubing , medium grade with provn of new fittings as required and fixing accessories in new or old position ( walls , ceiling floor etc ) including testing complete all as directed . , all as sch item no 33 herein before but 20mm bore all as specified and directed . , all as sch item no 33 herein before but 25mm bore all as specified and directed . , all as sch item