supply and installation of portable biotoilets at ambedkar stadium- 1 portable toilet cabin of nearest size 1100mm ( w ) x1100 ( b ) x2300 ( h ) -ewc ( western cabin ) floor / base-the double wall constructed readymade base shall be made out with hdpe material.water trap for indian style toilets should be inbuilt in the base to ensure leak free operation s.the base shall be single piece moulded.wall / roof ( superstructure ) -the superstructure of toilets shall be with hdpe side walls and roof in single wall construction .the superstructures shall be fixed on base with suitable fasteners.the air ventilation shall be provided at least one wall.the superstructure should have many nos.of embossed ribs for better strength. door and door frame -the door and door frame should be seperate moulded components with double walled construction for better strength.the doors should have inbuilt mechanism for auto closing for better aesthetics.the door and door frame should be connected with a galvanized iron coated mild steel hinge rod for rust free application 2 bio septic tank unit model ii 1200 litres 3 soak pit 4 installation and commission with labour charges including plumbing materials and earth work