Using the Ontario Building Code, determined the level of safety requirements, including requirements for the fire $-$resistant rating and fire separation for the building. Show all your work and state any assumptions and indicate the articles that you have used:

a$.$ Building with $2$units$.$ An RBC Bank with an area of $300$m$2$ and a child daycare center with an area $500$m$2.$ The building is $2$stories high, facing $2$streets and unsprinkelred.