Code For Deck Footings
My plan was to pour concrete footings then run doubled up 2x8 beams setting on the footings.
Code for deck footings. Check out our deck footing frost map to help you understand how deep your footings will need to be excavated. Total height of low level ground level deck. Pro tips on building a code compliant deck. Height of deck against door threshold.
Every year we hear about decks that collapse under the weight of people or snow load. Always backfill under posts or footings with gravel for proper drainage. Sep 04 19 1112 am. After youve laid out the perimeter of the deck its time to set the footings which support the posts that in turn support the deck.
Once your footings are buried below the frost line the ground will act as a barrier to insulate the soil below the footing from freezing in the winter. In warmer climates you can use premade footings. Deck safety is a real problem. I am building a 10x12deck not attached to a ledger board.
Improperly built decks can be dangerous. Although there isnt one specific deck building code here is a helpful summary of what you need to know for deck railings stairs stringers treads footings framing and ledger boardsit includes the most important requirements based on the irc and industry rules of thumb where no code statements exist. Check with your local code enforcement agency for specifics. Deck footings or piers and their posts not only support normal loads they also help provide the needed uplift resistance.
Apr 28 20 1117 am. Each footing must be capable of supporting 1500 psi load pressure and the code specifies minimum width and thickness depending on the beam and joist span. The following code specifications are derived from the international building code ibc for 1 and 2 story residences. When you excavate your footings you will need to dig below the frost line.
By rob robillard. Learn everything you need to know about installing concrete footings to support your deck. This nutshell guide is intended to give you a general sense of code requirements for foundation footings. Los angeles residential code 5 floors r507 exterior decks r5078 deck posts r50781 deck post to deck footing jump to full code chapter posts shall bear on footings in accordance with section r403 and figure r50781.
Concrete footings at or below the localitys frost line can be as basic as a pad in the bottom to support the column with stone backfilled around it or a solid concrete pile with an anchor bolt installed on top to hold the column in place figure 5. Steel other footing options.