Free Standing Deck Roof Requirements

According to the international residential code adopted by most states a deck does not need a building permit if it is less than 200 square feet under 30 off the ground does not serve a required exit door and is not attached to the dwelling if it is freestanding.

Free standing deck roof requirements.

Because there isn t a house to anchor one end of the deck uplift and racking forces are greater issues that must be addressed in the structural design. This article discusses strategies for building over an existing slab patio or over a deck and offers links to articles about the specific tasks such as pouring the footings raising posts and so forth. They have to be a bit longer than the patio. Using the irc s default soil bearing capacity of 1500 lb.

At the code minimum 50 lb. Deck foot anchor could support 1500 lb. The minimum height of the railing varies based on the height of the deck. To structure the roof take your 2 6 boards.

Start here if you re building a roof over a patio or deck. Typical decks are designed to support 55 psf lbs per square foot. Guards are required when then deck is 24 60 cm above grade. Standard bracing between posts and the outer beam is used on freestanding decks as it is on many decks attached to houses.

You can cut them down as needed. Decks 24 to 5 10 180 cm need 36 guards and anything above 5 10 requires a 42 high railing. Likewise the load that each deck foot anchor can support depends on the bearing capacity of the soil. Design load that s 30 sq.

A free standing roof needs to have posts sunk into the ground. The bracing material must be 2 x 4 lumber and you must use a 1 2 inch through bolt at each connection point every deck higher than 30 inches whether it s free standing or not must have a railing. Unlike decks attached to houses freestanding decks must be braced perpendicular to the house. Of deck or shed per footing.

The railing must be at least 36 inches high and it must include balusters that are no more than 4 inches apart. Porch decks require 25 additional psf for roof loads for a total of 80 psf. As a result most decks have inadequate footings to support a new porch roof. Many porches use 22 diameter corner and intermediate footings.

The footings for porch decks must be larger than deck footings. If it is next to a house or structure it should be secured to the siding or roof of that structure as well to keep it stable through high winds and lashing rains.