annual repair & maintenance of residential buildings, non-residential buildings and hostel buildings in dtu campuses. ( supply of manpower for day to day maintenance work during 2022-23 ) .- 1 computer operator: - ( 02 nos. x 12 months ) = 24 nos. 2 supervisor: - ( 03 nos. x 12 months ) = 36 nos. 3 work assistant: - ( 03 nos. x 12 months ) = 36 nos. 4 attendant: - ( 01 nos. x 12 months ) = 12 nos. 5 carpenter: - ( 06 nos. x 12 months ) = 72nos. 6 plumber: - ( 08 nos. x 12 months ) = 96 nos 7 mason: - ( 08 nos. x 12 months ) = 96 nos. 8 welder: - ( 04 nos. x 12 months ) = 48 nos. 9 painter: - ( 20 nos. x 12 months ) = 240 nos. 10 sewer men: - ( 03 nos. x 12 months ) = 36 nos 11 floor rubbing: - ( 06 nos. x 12 months ) = 72 nos. 12 beldar: - ( 26 nos. x 12 months ) = 312 nos.