Decks typically are designed to support 55 pounds per square feet or psf of weight.
Footing for deck with roof.
We will teach you how to determine the code compliant size of your footings based on the soil type and tributary loads.
The roof loads add to the size of the required bearing area and the projection of the footing under the fill provides for uplift resistance.
First draw a line dividing the deck into two halves between the house and the footings.
This is a common rule for footing so don t forget that.
You can also enclose it later to create a screened in or four season porch.
Deck footings come in a variety of sizes for various sizes of posts ranging from 10 pads to 24 pads.
The flat part at the bottom must be at least 6 thick.
However if your deck will include a hot tub or roof you must support that weight with additional footings.
Homeadvisor s deck framing guide instructs on how to plan and build a frame including spacing and adding footing posts brackets and anchors beams rim joists and other support features for a deck s foundation.
Then dump concrete through the tube into the bottom of the hole.
This raised deck is intended to be attached to a house and sturdy enough to accommodate future additions such as a roof.
Use batter boards and mason s string lines to lay out locations for seven support footings of 12 inches in diameter.
Put a roof over that deck and perhaps a pier footing foundation is a better choice because it offers more uplift resistance.
For a 10 8 deck with 12 footings expect to spend about 160 on footings.
Do this by nailing the sides of the tube to the center of a tic tac toe grid of 2x4s at the top of the hole.
How to get a solid frost proof footing.
For example if you are building a 10x10 deck attached to a house with two footings on the corners you could calculate the loads for the footings in the following way.
When you pour concrete footings hold the cardboard concrete form tube about 12 in.
To decrease the number of footings but likely increase the cost of construction you can instead use an engineered beam.
You will notice that the support post is also embedded deeply into the concrete and extends no closer than say 4 from the bottom of the footing.
With these style of deck footings there is a lot more work to do.
If the deck doubles as a porch it needs to be able to support no more than 80 psf.
Or if your deck has many angles additional footings are necessary.
Learn everything you need to know about installing concrete footings to support your deck.
Larger pads are more expensive.
As long as you are considering all the science behind foundation design the.
You still have to dig footing holes.
Pads run 80 for six 10 pads.
Porch decks also require larger footings than deck footings.
