matthew moser

I am in the process of remodeling my back poarch. It was 11 1/2 ft. long by 4 ft wide. It was also 3 1/2 ft off the ground with two columns holding up roof. My objective is to lower the poarch to ground level and extend the poarch out making the new poarch 11 1/2 ft wide by 18 ft. How is the best way to support the roof while working around it? there is a brick wall that will be comming out that is in the way