tender for day to day maintenance & petty repairs to ancillary structure of abasan building & repair & looking after of the properties such as internal & external water supply lines, sanitary & plumbing fitting fixtures internal & external sewerage & drainage lines, steel windows, wooden door etc. & other petty works of office building at 105, s. n. banerjee road, kolkata-700014. , maintenance and repairing work of the properties such as internal & external water supply lines (including suction delivery & distribution lines dry wet riser for fire fightings fitting & fixture, cleaning of internal & external sewerage & drainage lines, steel windows, wooden doors etc. other petty work of office building, generator room & garage within the premises of 105, s.n. banerjee road, kolkata- 700014. as per provision of special terms & conditions attached here to. , cost of supply of materials for repairing & replacement of maintenance work of office building per month. , add: gst @ 18 %