Utility building - basement 1 storey plan ; Utility building - basement 1 intermediate-storey plan; Utility building - ground storey plan; Utility building - 1st storey plan; Utility building - 2nd& 3rd storey plan; Utility building - sections M1&M2; Utility building - sections M3 ; Utility building - sections M4&M5; Utility building - sections M6-M8; Utility building - details; Utility building - basement 3 WTP∕STP part plan 01 ; Utility building - basement 3 WTP∕STP part plan 02 ; Utility building - basement 2 WTP∕STP part plan 01; Utility building - basement 2 WTP∕STP part plan 02; Utility building - WTP∕STP details ; Details of WTP∕STP staircases 01; Details of WTP∕STP staircases 02