1 Describe the functional requirements of a roof. Explain the various points to be considered in the selection of a suitable type of roof?

If you're going to cheat on your homework by copying and pasting the questions into Mahalo, I suggest you at least take the time to delete the question number. Also, pasting in the question twice is a waste of everybody's time. To answer the question, it think the answer to your question may involve 'rain'.