Building a deck around existing covered porch roof posts
We have hired a company to build our new home (modular). Most of it is build in the factory but we have a front and rear covered porch roof that we are hiring them to also build at the same time. This has to be done on site.
Their method is just to use sonotubes for concrete under the frost line for the covered porch roof posts. They offered to also build decking but the price was very high for the decking so we decided to only go for the covered roofs since we can use those areas right away and then do the decking ourselves later.
My question is how to do the footings for the deck when there will be existing roof posts already there supporting the roof? I don’t want to have to remove the roof support posts, but I also want our deck to have its own concrete footings.
I’ve attached an example — picture this covered deck but assume there would be no deck. How would you go about building the deck after the fact?
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