Best Way to Attach Deck Ledger Board to House
Whether you're building a brand-new deck or retrofitting an existing 1, concerns about the strength and safe of your deck can be a meaning source of tension. Other than the quality of the wood itself, how the members of a deck are connected to each other and to the adjacent structure is the most important affair about the deck. Connections that don't meet code requirements compromise a deck's strength and safety.
Be Aware of Local Lawmaking Requirements
For decks that are partially supported by an adjacent structure, such as a business firm, the connection betwixt the deck and the structure is vital. While a bolted or screwed ledger-to-rim-board connectedness is suitable for supporting gravity loads, in Washington State the IRC 2022 edifice code requires a connection that is able to resist side-to-side, or lateral, loads. In these situations, tension ties are typically called out to tie the joists of the deck direct to the structure.
Simpson Strong-Necktie® DTT deck tension ties are a safety, cost-effective solution, designed to meet or exceed lateral-load code requirements for deck construction.
Savour Compliance Flexibility with the Simpson Strong-Tie DTT1Z
The DTT1Z deck tension tie is an easy, economical solution for attaching a deck to a dwelling house and reinforcing its resistance to lateral movement. This deck tie has been specifically designed to comply with the 2022 IRC provision for lateral-load connections to a supporting structure, and it allows for deck joist connections to exist made to height plates, studs, or headers on a home's structural framing. This means that the DTT1Z tin can be installed from the outside, eliminating the difficulty, time, and boosted repair work involved in accessing floor joists by going through finished interiors.
The DTT1Z installs easily by fastening to the narrow or broad face of a single 2x deck joist with Strong-Drive® SD Connector screws or nails, and it accommodates nigh installation conditions, regardless of the siding blazon or ledger thickness. This deck tie'south versatility removes the guesswork from installation and makes retrofitting a quick and simple job. The lawmaking-listed DTT1Z satisfies the 2022 IRC provision for a 750 lb. lateral-load connection to the house at four locations per deck.
The DTT2Z tin can exist used to satisfy the 2022 IRC provision for a one,500 lb. lateral-load connection at two locations per deck ii' from the end of each side of the deck. The DTT2Z fastens in pairs to the wide faces of the deck and of the firm joists with Strong-Bulldoze® SDS Heavy-Duty Connector screws (included), and the pair are anchored together with a ½"–diameter threaded rod (sold separately).
Both parts are available individually or in a deck installation kit that includes all the necessary fasteners. Too, because steel connectors used on decks and other outdoor structures can exist exposed to corrosive elements, both the DTT1Z and the DTT2Z accept a ZMAX® coating to keep them protected from environmental moisture and from the corrosive chemicals used in some preservative-treated wood.
Know Your Options for Different Framing Conditions
The IRC prescribes item methods, but it does not stand for all common framing atmospheric condition. When other conditions are encountered, Simpson Strong-Tie has a technical bulletin that describes alternative methods of construction. Always be sure to consult your local building official for blessing before using any methods non prescribed by the IRC.
With the DTT1Z and DTT2Z, your deck'southward connections to the home will be code compliant and corrosion resistant. In other words, while the deck's connections are handily resisting your deck's tension loads, y'all'll be resting easy.
Source: https://solutions.dunnlumber.com/projects/ledger-board-connections-attached-decks
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