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A cantilevered
decks like the picture below, doesn't have any structural posts or beams
to support the floor. Instead of using posts and beams, the cantilevered
deck joist extend back into the building floor framing system.
Most of the time, a cantilevered floor joist will
protrude from the building, one third of the length of the floor joist,
while the other two thirds goes back into the building.
Even though this floor framing method is used by some carpenters and
home builders, it might not work on every project. Whenever you're
designing a structural cantilevered floor, it wouldn't be a bad idea to
check with your local building department or contact a structural
engineer for more information.
Sometimes a picture is worth a thousand words, so
hopefully, the picture above will explain how a cantilevered floor
system actually works.
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