annual repair and maintenance of resi and non-resi buildings during the year 2020-21 annual repair and maintenance of resi and non-resi buildings during the year 2020-21 ( sh providing services of labours for day to day maintenance ) at 26 scg nsg mumbai , attending various jobs such as opening and cleaning of choked sewers , drains , man holes , gully traps , road gull , chambers , water closets , floor traps , wash basin , kitchen sink including vertical stacks rainwater pipes etc and cleaning with acid/biodegradable chemical/detergent whenever required as per satisfaction of occupant and direction of engineer-in-charge including disposal of silt/malba/waste garbage etc to the dumping ground complete . , attending various plumbing related jobs like fixing of sanitary fitting like flush valves , connecting geysers , pillar cocks , stop cocks , bib cocks , gi pipes , waste pipes , cisterns , wc pans and mixersof all kind of showers and others fittings complete as per direction of engineer-in-charge . , attending various jobs such as lifting/shifting of material from one place to another , assisting in moving heavy loads , helping in works of other mistries whenever required , digging of pits , removal of unused material from the sites etc complete as directed by engineer-in-charge .