We are discussing how to deal with the basement ceiling. One of the options is reorganize those wires and pipes to make them as neat as possible and just paint those wires, pipes, joists and first floors. Then basement ceiling will be a little "higher". Don't know if it is a good option or not. But I have two questions about this:

1. is it allowed in term of the fire safety? The drywall ceiling and suspended ceiling both are fire proof ceilings.
2. the wires have to be put into metal conduit then?