How deep does a deck need to be in order for it to support a house? The answer, of course, is that the people who build houses are best qualified to determine how deep their decks should go. In Massachusetts there are different building codes depending on whether you’re living near salt water or fresh water.
The “massachusetts building code for decks and railings” is a law that states how deep deck footings need to be in Massachusetts. The depth of the footing is determined by the height of the deck above grade.
In Massachusetts, the average frost line is between 30 and 35 inches. Your local building department is the best source of information on frost line depth. My inspector wants to see deck footings that are 48″ deep installed.
In this regard, how deep should a deck’s footer be?
around 6 inches
Is it possible to utilize deck pier blocks in place of footings? In many aspects, a deck pier block is a reduced form of a “precast foundation,” a foundation type that is recognized by building rules. Despite not being cast-in-place, they must meet all of the same standards as traditional footings. Because pier blocks have a tiny bearing surface, they can only hold a limited amount of weight.
Furthermore, how deep must you dig to go below the frost line?
The established depth frost line ranges from 36 to 48 inches, but the typical depth of frost for our area is between 15 and 20 inches. As a result, the frost line is a “safe” distance under the ground’s surface beyond which freezing temperatures will have no effect on the soil or anything buried beneath it.
Is it necessary to place deck posts in concrete?
Because a deck post may shatter if it is put inside concrete, it should always be positioned on top of the footing. When concrete is poured around a deck post in this manner, moisture from the earth causes the post to decay.
Answers to Related Questions
For a deck of footings, how many bags of concrete do I need?
When mixed with 4 quarts of water, it yields 60 cubic feet. You’ll need 1.66 bags of concrete if you buy 80-pound bags of concrete. Due to the fact that concrete bags are only offered in entire amounts, you’ll need two (2) 60-pound bags to make one cubic yard.
Is it necessary to have footings for a freestanding deck?
Deck Footings That Are Free-Standing This is required when a deck is linked to a home, but you don’t need frost footings if you’re constructing a shed or a standalone deck. It’s as simple as digging down to the mineral soil under the topsoil.
For a 4×4 post, what size sonotube should I use?
For a 4×4 fence post, what size Sonotube do I need? The rule of thumb is to use a tube diameter three times the post width, thus for a 4×4″ post, use a Sonotube with a diameter of 12″.
For a deck, how many footings do I need?
You’ll need at least three footings for a connected 12 x 12′ deck, plus at least two more if you want to add stairs with it. It’s simple to calculate how many you’ll need if your deck is a different size.
How do you attach deck footings?
Hold the cardboard concrete form tube approximately 12 in. up from the bottom of the footing while pouring concrete footings. To do so, nail the tube’s sides to the center of a 2×4 tic-tac-toe grid at the top of the hole. Then, using the tube, pour concrete into the hole’s bottom.
Can I build my deck with 4×4 posts?
Many decks used to be designed using 4×4 support posts (also called structural posts). Even if the deck is only 3 feet off the ground, these can bow significantly. As a result, even if your building department does not need them, we highly advise you to utilize 6x6s instead.
For a 4×4 post, how large of a hole do I need?
Using a power auger, hand auger, or post-hole digger, dig an 8″-diameter hole at least 6″ deeper than your area’s frost line for each 4×4 post. A 10×10 post necessitates a 6×6 post “a hole with a diameter of -diameter a 6 inch shovel “To provide drainage, place a layer of gravel in the hole.
I’m not sure how I’m going to get a post into the ground without using concrete.
- Using your digging iron, lightly tamp it against a concrete surface.
- Remove the lawn and dirt from the area where the post will be installed.
- Dump the displaced soil onto the tarp as you Make a hole.
- Fill the hole with 4 inches of gravel.
- In the hole, place the post.
- Around the base of the post, add another 2 inches of gravel.
Is it possible to bury deck posts?
The Footing of the Buried Post Pour a concrete pad at least 12″ thick at the bottom of the hole for this foundation option. The pressure treatment businesses claim that these posts will endure longer in the ground than the deck structure placed above them, and the IRC code supports this claim.
How can you construct a deck without having to dig holes?
The use of precast piers eliminates the need to dig holes for your deck.
- Precast deck piers should be spaced three to four feet apart in a grid.
- Using a measuring tape, measure your grid diagonally from corner to corner.
- As a helper keeps the other end of the line level, extend it to see whether the piers are level.
How do you put a 4×4 post in place?
Setting the Post in Soil or Gravel (Method 1)
- If you have thick soil, use this approach.
- Select a sturdy fence post.
- Prepare the wood to withstand dampness (optional).
- Make a hole.
- Fill the hole with gravel.
- In the hole, place the post.
- Fill the hole with crushed stone or soil that has been tamped down.
- Finally, add a small hillock.
Is a depth of 2 feet sufficient for fence posts?
For panel sections, you should dig your fence post holes to a depth of 2 feet. A typical rule of thumb is to dig the holes one-third to one-half the height of the post above ground. The deeper you dig the holes, the more stable your fence will be, but you’ll need to buy longer posts as well.
What is the depth of Wisconsin’s frost line?
What is the depth of Wisconsin’s frost line? The National Weather Service measures frost depth in Wisconsin from the beginning of November until the end of the spring thaw. Since the National Weather Service started measuring frost depth, the deepest measure was 24 inches in February 2009.
What is the depth of the buried water pipe?
In general, plastic pipe must be laid at least 18 inches deep from the top of the pipe to the soil level. Below the frost level, all pipe should be laid. It might be 4 feet or more deep in certain locations. The depth of the pipe must meet particular limits set by your local building authority.
Is it possible to use 2×6 for deck joists?
2×6 joists should only be used in ground-level decks where no guards are required or will be provided. Because most decking is not sturdy enough to handle greater spans than 16″, most decks utilize 16″ on center spacing for joists.
How do you create a deck from the ground up?
- Step 1: Dig Post Holes for the Ground-Level Deck.
- Step 2: Pour concrete and secure the posts using post anchors.
- Attach the Beams to the Post Anchors in Step 3.
- Step 4: Install the Angle Brackets and Rim Joists.
- Step 5: Join the inner joists to the faces of the beams.
- Step 6: Attach the boards to the joists using fasteners.
On a deck railing, how far apart should the posts be?
Bolt the posts to the rim joists from the inside. The maximum post spacing is 72 inches on center. Bolts should be placed at least 5-1/8 inch apart vertically. Slide the post sleeve over the wood post, then the post sleeve skirt over the post sleeve; both should rest on the decking for a composite railing system.
The “massachusetts building code online” is a website that provides information on the Massachusetts building codes. The website includes a searchable database of all the codes and their requirements.