Thanks to my lecturers and the technical team that tiresomely provide the notes and the diagrams, thanks they make me understand better. And on the super structure or a wall must be erect on a firm foundation. and also considering the accurate Plumbness on the corners. And when setting up ceiling, Calculations on the size of the Room and getting the right or required materials only to minimize wastage of material and money that would cover up other materials, and I have learn t that quality materials are worth going for it. thanks so much and God bless all my fellow students online program-me.