16"X16" CMU pillars for deck, roof, and post column

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Old 02-11-19, 09:15 AM
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16"X16" CMU pillars for deck, roof, and post column

Hello,
I couldn't get an answer from the Framing form so I thought I would try here, I want to build a 18' wide x 12' deep free standing deck on 16" x16" CMU pillars, in addition I want 6" X 6" post anchored to the CMU in order to support the roof covering the deck. I came up with a brain storm of attaching the perimeter of the platform to the side of the CMU and anchoring my post to the top of the CMU with a homemade simpson strong tie design using a piece of U channel steel welded to two pieces of angle iron that has a 6" vertical support for the post, The steel I intend to use is approx. 1/4 thick.
My first question is do you think a 16" x 16" CMU pillar would work and be enough support for all dead loads? Second question is how wide does the concrete footing under the 16" x 16" need to be?
 
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