500 sq feet house
Ground 300,first floor 200
In ground floor living, stair using gi materials,one bedroom 9*10,, small bathroom,small kitchen area, dishwash area, washing machine area
First floor one room plus small bathroom
The room should be inside the parappet wall ie there should be a walkable distance from 4 sides from edge of the building for the room
The roof of the upstairs using gi pipe and odu. No vaarppu needed