How many posts do I need for a 12x16 deck?
The larger 12-foot side will have a post spacing of 6 feet at a minimum code requirement. That makes a total of eight poststhat needto be installed on this average size deck. For aesthetic or symmetry reasons, more postsmay be added. Click to see full answer Subsequently, one may also ask, how many posts do I need for a 12x16 deck?
How far apart should deck posts be?
The distance between deck support posts depends on the type of wood species used and the size of the joist and beam. There is no minimum span, and maximum spans can reach up to 15’. Below we’ll take a look at some of the main considerations when asking how far apart should deck posts be.
Can you use a 4x4 as a deck support post?
As mentioned above, many local building codes allow for the use of 4x4s as deck support posts up to around 5’ – or less. The benefit of using 4x4s is that you can put them on a smaller diameter deck footing, which thus requires less concrete and digging.
What materials do I need for a 10x10 pressure treated deck?
Materials List for a 10 x 10 Attached Pressure-Treated Deck Materials Quantity Unit 1-1/4" Electro-Galvanized Roofing Nails ... 1 box 2 x 12 - 8 Foot Pressure Treated Lumber 1 each 2 x 12 - 10 Foot Pressure Treated Lumber 1 each 4 x 4 - 8 Foot Pressure Treated Timber 9 each 22 more rows ...
How many posts does my deck need?
Before starting to build, the first question is: How many footings do I need for a deck? For an attached 12 x 12' deck, you'll need at least 3 footings, plus at least 2 more if you're planning on building stairs with it. If your deck will be a different size, it's easy to figure out how many you'll need.
How much does it cost for a 10x10 deck?
2. Deck Cost Estimator by SizeDimensionsTotal Square FeetAverage Price Range8x1080$3,200 - $4,80010x10100$4,000 - $6,00010x12120$4,800 - $7,20012x12144$5,760 - $8,6409 more rows
How far apart should posts be on a deck?
8 feetLayout and Footing Locations Starting with your perimeter, mark the location of each deck 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 rigid frame.Dec 27, 2012
How many post do I need for a 8x10 deck?
You will need six 4-by-4 or 6-by-6 pieces of lumber for the posts and four 2-by-10 pieces of lumber that are at least 10 feet long. The latter will combine to make up the two large beams to support the deck. You will also need eight 2-by-6 beams for your joists, which have to be at least 8 feet long.
Is it cheaper to build your own deck?
When you construct a basic deck with the least expensive lumber on the market, you will probably pay between $8-10 for every square foot of area if you build it yourself. But, if you hire someone to build it, you could end up paying as much as $25 per square foot.
How much value does a deck add to a house?
Deck Improvements Can Recoup 100% of Their Cost While many home renovation projects only recoup anywhere from 50% to 80% of their cost, multiple studies have estimated that the ROI for patios and decks can exceed 100% based on the size and materials used.May 7, 2019
Should you use 4x4 or 6x6 deck posts?
4x4 post will be fine. I have built many decks for new homes with them. 6x6 is more sturdy of course and will not twist as easy, but for structure purposes, 4x4 will be fine.Aug 5, 2011
Can I use 4x4 posts for my deck?
Deck posts must be a minimum of 4×4 according to the IRC but many jurisdictions require a 6×6 post as a standard. To avoid code violations, many deck builders choose the 6×6 even if the 4×4 is acceptable.
How do you calculate deck posts?
Draw a line through the mid-span of the joists. Then find the mid-span of the beam that the post supports, and extend lines from there back to the line at the joist mid-span. Find the area within the lines. To calculate the design load for the post, multiply the tributary area by the combined live and dead loads.
How much wood do I need for a 10x10 deck?
How much wood do I need to build a deck?Deck SizeSquare FeetAverage Cost10x10100$1,500 – $3,50010x12120$1,800 – $4,20012x12144$2,160 – $5,04012x20240$3,600 – $8,400Apr 2, 2020
How do you build a 8x10 deck?
0:0314:56How to Build an 8 x10 Deck for Beginners - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe start by digging the holes 10 inches to 12 inches round and diameter to 42 inches to 48 inchesMoreWe start by digging the holes 10 inches to 12 inches round and diameter to 42 inches to 48 inches deep depending on the frost level in your area is how deep you dig the holes.
What do I need to build a 8x8 deck?
8×8 Deck PlansA – 2 pieces of 4×6 lumber – 96″ long BEAMS.B – 2 pieces of 2×6 lumber – 96” long, 9 pieces – 96” long JOISTS.C – 17 pieces of 5/4×6 lumber – 96” long DECKING.D – 3 pieces of 1×2 decking – 97 1/2” long TRIMS.E – 2 pieces of 2×6 lumber – 96″ long, 9 pieces – 9 3/4″ long STEP.More items...
How many posts are needed for a 12 foot deck?
The larger 12-foot side will have a post spacing of 6 feet at a minimum code requirement. That makes a total of eight posts that need to be installed on this average size deck. For aesthetic or symmetry reasons, more posts may be added.
How thick should a concrete pier be?
Assuming a minimum soil bearing capacity of 1,500 psf, 8-inch-diameter concrete piers bearing on square footings measuring 2 feet on a side and 9 to 11 inches thick are adequate for most single-story decks where beams are spaced 14 feet apart or less and joist spans are 14 feet or less (see table below).
How high should a corner post be on a deck?
If your deck is more than 2’ high , your corner support posts will need to be braced parallel and perpendicular to the support beam and deck joists, respectively. Some jurisdictions do not allow bracing on a middle post if you have one.
What happens to deck support posts as joist length increases?
On the other hand, as your joist length increases, so does the diameter of your footings that your deck support posts sit on.
How far apart should deck joists be?
The spacing of your joists indirectly affects how far apart you place your deck support posts. For example, most decks have joists that are spaced 16” on center. However, if you opt to space your joists only 12” on center you can have a much longer deck span – up to 2’ longer.
What does a deck beam span tell you?
What they do tell you is the maximum length of a beam for a particular joist span. For example, the table will be called something like “deck beam spans”. This is confusing because it is not only telling you the beam span but also telling you maximum distances you can space your deck support posts.
What is a 2 ply deck?
You are limited to two-ply beams – that means two pieces of lumber, such as two 2x8s nailed together for use as a deck support beam. When using a two-ply deck beam atop 4x4s, you are limited in terms of how far you can space your deck support posts.
How far off the ground can you use 4x4 deck support?
4×4 deck support posts cannot be used if a deck is more than 5’ off the ground. Some jurisdictions do not allow them at all, so check with your local building services office. 6×6 support posts require a minimum of 10” diameter footings. Beams must sit on top of deck support posts, using code-approved fasteners.
How long can a 2x12 beam span?
Because the maximum span a two-ply 2×12 can run is just over 9’. The maximum span indicates how long a beam can run supported by two deck support posts. A three-ply 2×12 would allow you to use only two deck support posts for the 10×10 deck. A beam of that size can span nearly 12’ while supporting 10’ joists.
How many posts do I need for a 10x10 deck?
For a 10x10 deck (small) - you really only need 4 posts, but you can do more if you're a glutton for punishment. If you cantilver the deck 2 feet on all four sides then you only have 6 foot spans between your posts. I'd go with 2x10's for this design.
What is the difference between a 12x12 and a 10x12?
Then go 10x12. Well - a 12x12 is a little extra cost - 4 extra boards, but a 10x12 is truyl no extra cost. That way you can keep off the property line at the back of your property, and still not have to cut all your top boards and joists.
Can you span 9' 9" with 16" OC?
Dave25L is right - with 2x6's as joists - you can span 9' 9" with 16" OC which (if you cantilver) gives you the ability to use that free wood. And you won't need a 3rd beam (keeping your work light) Agree on the doubling up for the beams always a good idea. I still like the 2x8's - but your deck will be plenty strong with the 2x6's. (don't do more than the standard 16" OC with the joists though)
Is a 12x12 railing the same as a 10x10 railing?
I remember that you asked about the PVC railing as well. Same thing here - the 12x12 will cost the same as the 10x10 on the railing and will actually be less work.
Lumber and Structure
Estimating how much lumber you need starts with looking at the basic elements of the deck: the foundation, the frame and the stairs. When trying to calculate decking, these elements comprise the structure of the deck and are made of concrete and framing lumber.
Determining How Much Concrete is Needed
Determining how much concrete you need per cardboard tube will depend upon the tube size, and how deep it needs to be set into the ground.
Hardware and Building Materials
When learning how to calculate decking, you'll need to keep in mind hardware and other building materials as well. Here are the basics you will need for this project:
Estimating Decking
Decking material makes up the deck flooring and is available in a variety of styles, lengths and widths. Whether you’re building a wood deck or composite deck, you’ll need to know the width of the decking boards.
Estimating Railings
Rail post and hardware: Your drawings will specify how many and what size your deck posts will need to be around the perimeter of the deck as well as down the stairs. Add up the number of posts and note the lengths.
