Asked by: Abdelhila Saxe
business and finance civil engineering industry

How far apart should concrete piers be for a deck?

Last Updated: 18th March, 2020

Starting with your perimeter, mark the location of eachdeck post to locate the fitting position. In general, postsshould be spaced no more than 8 feet apart. Somebuilders position them every 4 feet for a completely rigid frame.The maximum distance between footings is determined by thesize of your joist material.

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Herein, how far apart should concrete deck blocks be?

Space four interior blocks 2 feet apartfrom one another on each trench line. Level the interiorblocks to your corner blocks. You will have twoblocks between your horizontal corners and threeblocks between your vertical corners.

Beside above, how many posts do I need for a 10x10 deck? 10x10 deck You should really use 2x8's or 2x10's. For a10x10 deck (small) - you really only need 4posts, but you can do more if you're a glutton forpunishment. If you cantilver the deck 2 feet on all foursides then you only have 6 foot spans between yourposts.

Also to know, how many posts do I need for a 10x12 deck?

The shorter sides—in this case, the 8-footside—will have 4-feet of distance between deck posts.The larger 12-foot side will have a post spacing of 6 feetat a minimum code requirement. That makes a total of eightposts that need to be installed on this average sizedeck.

Can I use deck pier blocks instead of footings?

A deck pier block is in many ways just asimplified version of a “precast foundation”, afoundation type recognized by building codes. They're subject toall of the same requirements as a typical footing,regardless of not being cast-in-place. The small bearing area ofpier blocks is limited in supporting much load.

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Do you need a permit to build a floating deck?

In addition to not requiring a building permit,floating decks are far easier and faster to buildthan elevated decks. They don't require frost depthfootings and don't need handrails because they are so closeto the ground.

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Can you bury concrete deck blocks?

In most regions of the country, that means securingsupport posts to the foundation with code-approved metalconnectors, or having the ends of posts set on concrete deckblocks buried at least 12 inches below grade (the top of thesoil). Precast concrete deck blocks are popular for buildingdecks.

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Can I build a deck directly on the ground?

Generally, if a deck is less than 12 inches abovethe ground, the perimeter of the deck must be openfor free air to flow below the deck. Some builders buildground level decks directly on top of existing concretepatios using sleepers. Ground Level Deck. Here is anexample of a ground level deck.

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Does a freestanding deck need footings?

Free-Standing Deck Footings. It doesrequire this when a deck is attached to a house, but ifyou're building a shed or a freestanding deck, you don'tneed frost footings. You only have to dig down to themineral soil below the topsoil.

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How many footings do I need for a deck?

The standard rule for footings is that for abasic deck, the larger the beam and footing size, thefewer footings you'll need. If you're building asimple deck, footings and posts should beplaced less than 8 feet apart.

Djilali Stubener


Does a floating deck need footings?

Floating Deck Footings. The reasoning is that thedeck will be free to move along with the ground. If thedeck is attached to a house you will be required toinstall footings below the frost line to prevent thedeck from separating from the house when the ground beginsto move.

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How far apart should 4x4 posts be on a deck?

In general, posts should be spaced no more than 8feet apart. Some builders position them every 4 feet for acompletely rigid frame. The maximum distance betweenfootings is determined by the size of your joistmaterial.

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Should deck posts be set in concrete?

Post set in concrete
Even if you're setting deck posts in the ground,instead of on top of footings, the concrete still needs toextend below the frost line.

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What size post should I use for a deck?

As a general rule, if the support posts arespaced no more than 10 feet on center, all you will need touse are 4- by 4-inch posts. Most local building codespermit 4-by-4 posts 10 feet on center for all but multistorydecks..

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Should I use 2x6 or 2x8 for deck?

In general terms, joists spaced 16 inches on centercan span 1.5 times in feet their depth in inches. A2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet. Thelarger the deck, the larger the joists. 2x6 joistsshould only be used on ground-level decks that do notrequire, and will not provide for, any guards.

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How deep should deck footings be?

Footings typically must extend below the frostline to prevent shifting during freeze-thaw cycles. Digfooting holes about 6 inches deeper than required.Fill the bottom of the hole with 6 inches of gravel and compact thegravel with a 2x4 or wood post.

Maika Berengeno


How far can you span deck boards?

Decking boards span from joist to joist. Ifyou use 5/4 decking, joists must be no farther apartthan 16 inches. Decking made of 2x4s or 2x6s can spanup to 24 inches.

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How do you install fence posts without concrete?

  1. Find a concrete surface and lightly tamp your digging ironagainst it.
  2. Remove the turf and topsoil from the site of the post.
  3. Dig the hole putting the displaced earth onto the tarp.
  4. Pour 4 inches of gravel into the hole.
  5. Place the post in the hole.
  6. Add another 2 inches of gravel around the base of thepost.

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How much does it cost to build a 12x12 deck?

The average homeowner spends about $7,000 tobuild a 200 to 500 square foot deck, with smallerdecks costing as low as $2,000. The cost to build adeck in wood, composite or plastic is about $35 per squarefoot, including materials.

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How much would a 10x10 deck cost?

Building a 10x10 foot ground-level deckyourself would cost about $700 for the materials versuspaying a professional around $2,200 total. You could usepressure-treated lumber to build a 16x16 foot deck for$1,500 or hire a contractor to do the labor for you for about$6,400.

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How far apart should the post be on a deck?

Starting with your perimeter, mark the location of eachdeck post to locate the fitting position. In general,posts should be spaced no more than 8 feet apart.Some builders position them every 4 feet for a completely rigidframe. The maximum distance between footings is determinedby the size of your joist material.

Ribhu Melendres


What is a floating deck?

Building an 8-by-10-Foot FloatingDeck
Floating decks are so called because, ratherthan being attached to a building as are standard decks,they simply "float" on top of the ground. Floatingdecks can be set directly on the ground or, preferably, a bedof gravel. But it's best to support the deck on concreteblocks.

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What is the building code for decks?

The IRC requires guardrails to be at least 36" inheight, measured from the deck surface to the top of therail. Commercial decks attached to multi-family buildings,such as apartment buildings or businesses, are regulated under theInternational Building Code (IBC). The IBC requires 42" highguardrails.