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The deck guardrail height should be a minimum of 36 inches, as measured from the surface of the deck to the top of the rail.
How high should deck posts be?
Measure from the deck floor to the top of the rail between posts. This must be at least 36″ high to meet IRC requirements. Make sure your sweep space and all infill openings will not allow a 4″ sphere to pass through.
How tall are deck railing posts?
What Is Code For Deck Railing Height? The International Residential Council (IRC) requires guardrails to be at least 36 inches high, measured from the deck surface to the top of the rail. Commercial decks attached to multifamily buildings need 42 inch high guardrails.
How tall should deck stair posts be?
Stair rails on decks should be between 34 inches and 38 inches high, measured vertically from the nose of the tread to the top of the rail.
What size should deck railing posts be?
The two most common sizes used for deck posts are 4×4 and 6×6. When using 4×4 posts, place them no more than 6 feet apart, and when using 6×6 posts, no more than 8 feet apart. The reason for these standards is that the railing system won’t have proper support if the posts are too far apart.
Can deck railing posts be 8 feet apart?
U.S. building code requires support posts for the rail structure to be no further apart than 6 feet on a deck with 4×4′ deck rail posts and no more than 8 feet apart for decks with 6×6′ deck rail posts. Posts should be no further apart than 5.5 feet on stairs.
Can you use 4×4 posts for a deck?
In the past, many decks were built with 4×4 support posts (also called structural posts). But these can bow seriously, even if a deck is only 3 feet off the ground. For that reason, we strongly recommend that you use 6x6s instead, even if your building department does not demand them.
How high should my newel post be?
There are several methods of how to install a newel post but the first step is cutting the stair newel post to the correct height. Typically floor level balustrades must be at least 36” high or 42” high, depending on local codes and stair guardrails must be between 34” and 38”.
How far apart should deck railing posts be?
The structural integrity of the railing depends heavily on the posts that support the rail structure. These posts should be no farther apart than six feet on the flat deck and no farther apart than 5 1/2 feet on stairs.
Do deck stairs need risers?
Most high-end deck projects use closed risers to finish the stairs. They also are often in violation of IRC code for decks over 30″, which maintains that they meet the same requirements as guardrail infill. Stair risers may not have openings present that would allow a 4” diameter sphere to pass through.
Do deck stairs need footings?
Regardless of the stair run and number of treads, the stairway needs a footing at the bottom to support the stringers—they can’t just rest on the ground. When the deck is freestanding and not connected to the house, then the stair footing (and all other footings for the deck) only needs to be 12 in. deep.
How far apart should 4×4 deck posts be?
For Building a Deck Railing, Deck Frame, or Fence The maximum spacing of 4×4 deck posts should be 6 feet on center, while the maximum spacing of 6×6 deck posts should be 8 feet on center.
Can I use 4×6 for deck post?
Size of the deck Most professionals will encourage you to consider going with a 6×6 deck post form the outset of the project. Decks that are going to be built higher than just a few feet off the ground will likely need something more substantial than a simple 4×4.
What accounts for roughly 90% of all deck collapses?
About 90% of deck collapses occurred as a result of the separation of the deck ledger board from the house, allowing the deck to swing away from the house. It is very rare for deck floor joists to break mid-span. Many more injuries are the result of rail failure, rather than complete deck collapse.
How many posts do I need for a 12×16 deck?
A standard deck will need four footings parallel to the house, but they will need to be temporarily braced by 6 inch-by-6 inch posts.
How do you evenly space deck posts?
How to Evenly Space Spindles on Decks Measure the width of the gap between the inner surfaces of the two support posts. Measure the width of a single spindle. Add the two figures together. Count the number of spindles to be used and add one. Divide the sum of the width by the sum of the number of spindles.
How many posts do I need for a 12×12 deck?
For an attached 12 x 12′ deck, you’ll need at least 3 footings, plus at least 2 more if you’re planning on building stairs with it.
Should deck posts be 4×4 or 6×6?
Deck posts must be a minimum of 4×4 according to the IRC but many jurisdictions require a 6×6 post as a standard. To avoid code violations, many deck builders choose the 6×6 even if the 4×4 is acceptable.
