Depending on what part of the country you live in. In the south they are to be 2 foot deep, most generally it is 3' deep and extreme north 4' deep.
The best practices for installing concrete footers for a deck include digging deep holes, using sturdy forms, ensuring proper alignment and leveling, adding reinforcement, pouring concrete evenly, and allowing sufficient curing time before building the deck on top.
Deck footers are concrete supports that are placed beneath the ground to provide a stable foundation for a deck. They help distribute the weight of the deck evenly and prevent it from sinking or shifting over time. This contributes to the stability and longevity of the deck structure by ensuring that it remains level and secure, even in changing weather conditions.
A building permit may be needed for adding a deck or patio in Edmonds, Washington. The type of permit and codes depends on the height, location and construction of the deck.
The necessary steps for installing concrete footings for a deck are: Determine the location and size of the footings based on the deck design and local building codes. Dig holes at each footing location to the required depth and diameter. Place a cardboard tube form in each hole to contain the concrete. Add a layer of gravel at the bottom of each hole for drainage. Mix and pour concrete into the holes, making sure it is level with the ground. Insert a post anchor or metal bracket into the wet concrete for attaching the deck posts. Allow the concrete to cure for the recommended time before building the deck on top.
The bigger, the stronger generally, and the more weight they can support. But the footers and support beams have to be sized properly also.
The maximum height for a deck without a railing is typically 30 inches above the ground, as per building codes and regulations.
When building a deck using concrete as the primary material, it is important to follow these best practices: Ensure the ground is properly prepared and leveled before pouring the concrete. Use high-quality concrete mix with the appropriate strength for the deck's intended use. Reinforce the concrete with steel rebar or mesh to increase its strength and durability. Allow the concrete to cure properly before placing any heavy loads on the deck. Seal the concrete surface to protect it from water damage and staining. Regularly inspect and maintain the deck to prevent cracks and other issues.
Stay with the 12 footers, saves so much time and will be plenty strong enough since your deck is not bearing a constant load such as walls and a roof.
The best materials for building sturdy deck piers are typically concrete or pressure-treated wood. These materials provide durability and strength to support the weight of the deck structure.
Deck building calculators to help calculate concrete, joist and beam span, stair stringer layout, baluster, deck boards and deck load too. hi there here it is
When building a very low deck over concrete, it is important to use pressure-treated wood for durability, ensure proper drainage to prevent water damage, and use concrete anchors or screws to secure the deck to the concrete. Additionally, consider using a moisture barrier to protect the wood from moisture and choose a design that allows for air circulation to prevent mold and rot.
Generally, yes if it's wood, no if it's concrete.