Search the DCAP section : Department of construction and permits
You will find guides and requirements with respect to porch and deck construction.
Don't go "CHEAP" because it will not be cheap when you have to have it repaired again and again.
I recommend Simpson Strong Tie Brand Stainless Steel connectors with the proper fasteners and building methods per the City of Chicago requirements.
Do it right the first time and spend a little more but think of the peace of mind you will have later.
The HUGE issues I see with building I inspect is many contractors or DIY'ers go extra cheap or don't follow current requirements. That means FINES, CODE violations and reconstruction costs $$$in Chicago .
The city is inspecting porches and decks for safety slowly but surely..
The term code stands for: Lowest level of required safety and has nothing to do with quality!
Common sense is a not used in building construction.