annual repair and maintenance of various roads under pwd south east road-2 during 2020-21 ( sh conducting the topographical survey for the area near rub under sub-division ser-24 ) . , conducting topographical survey of area including road , service roads , building , services i . e . water , sewer line , sump & electrical line manhole etc with the help of dgps ( digital global positioning system ) or any suitable digital instruments like total station and taking longitudes , latitudes coordinates at and contouring at the interval of 3 metre centre to centre and plotting the same with the help of required software and submission of three sets of hard copy of drawings for complete area editable soft copy . the work will be carried out strictly as per actual site requirement , site conditions , complete as per direction of engineer-in-charge with the following scope of work: