What Size Sonotube Do I Need For A 6x6 Post6×6 Posts Capacity For most decks, 6 deck posts provide a robust, stable foundation. The pergola will dimension 11'x 11. The remainder of the 6x6 post laps over the inner or outer vertical face of the beam. By knowing two things: 1) Weight on the footing. You can determine the footing size needed to support the load by using this formula: A = B/C. Due to the wide varied range of possible applications, they come in lengths of 12 to 20 feet and diameter sizes from 6 to 60 inches. The pressure treated beams gives us a sneak peek at the rough size of the front deck. Place approximately 2” (50 mm) of gravel in the bottom of the hole. If you use sonotube, it can lessen the amount of concrete you use. How to Build Deck Footings with QUIKRETE® Watch on. Most pole standard bases in commercial and retail parking areas are a minimum 6' deep and they are usually 8' deep. 2917′ Next, find radius (½ of the diameter): 0. Sonovoid® Round Concrete Forms. FOOTINGS: – Poured concrete footings should be a minimum of 8” wider than the posts (4×4 post – 12” min. Meanwhile, a 6×6 post would warrant an 18” Sonotube. ) as well as that of the post(1089cubic in. 5' on center of post with 6x6 posts (4 posts), tied together with sandwiched 2x12 beams. Can deck post rest on concrete slab?. Due to the wide varied range of possible applications, they come in lengths of 12 to 20 feet and diameter sizes from 6 to 60 inches. I would think that if a pier fdn. top of tube was same level as the deck the and not visible under the post and. 1 - Dig post holes 10" to 12" in diameter and 3' 6" to 4' deep. The post size, and possibly soil conditions, would determine footing size, not static load. Sonotubes are noted for their exceptional strength and resistance to water and tearing. Place the QUIK-tube on the footing and backfill or brace it vertically to hold in place. A 666’s real dimensions are 5-1/2″ x 5-1/2″. Sonotube Rainguard®. width), a two level deck or deck with roof. The remainder of the 6x6 post laps over the inner or outer vertical face of the beam. 11-14-2007, 07:45 AM. These smaller sizes are more likely to bend over the course of the year, creating major structural issues that could jeopardize the safety of you and your family. For posts, the sonotube should be a minimum of 4 feet deep in order to be securely anchored into the soil. The sonotube calculator allows you to enter the following components: Select calculations in cubic yards or cubic meters. However, experienced contractors will tell you that a 4×4 post simply can’t carry the heavy load that many porches require. So, these are the features you need to know about while making your. Sonotube Builder's Tube®. What size sonotube do I need for a 6×6 post? The rule-of-thumb is to use a tube diameter 3 times the post width, therefore use a 12” diameter Sonotube for a 4×4” post. The base should be even to properly install the Sonotube on its vertical orientation (or plumbed) and prevent shifting once the concrete is introduced. I am unsure as to how much concrete to buy being that there is only about a 3" gap around after the post is in. The design shows the (2) bases back to back and then centered as a pair on the 18" footing, there is more than 3-1/2" of concrete from any edge of the column bases from any edge and yes both columns are not directly centered on the footing diameter. If the 6x6 landed off dead center and the other base was not there, would you have an issue with it. Concrete Forming Tube 8" DIA 10" DIA 12" DIA 16" DIA; Bags (60 lb) of concrete mix: 4: 5: 8: 13:. As a rule of thumb, you should always use a Sonotube with a diameter that is three times your desired post’s width. Meanwhile, a 6×6 post would warrant an 18" Sonotube. Depending on the look you are going for I guess. Our 4x4 brackets are 14 gauge steel, 6x6 brackets are 12 gauge steel, 2x4 brackets are 14 gauge steel and 2x6 are 12 gauge steel. Does that sound about right? I am more confused about the support posts for the landings. In general, a one-story building will need a minimum of a 12-inch wide footings on undisturbed soil with LBVs between 1,500 and 4,000. What sizes do Sonotubes come in? Sonotubes come in a variety of sizes, from 6" to 60" in diameter and from 4′ to 20′ in length. So, if you’re planning on using a four-inch round or 4x4-inch square post, your post hole will need to be 12 inches in diameter. DJT: Connects beams at the side of the post. Figure concrete volume by multiplying the height of the post and column in feet by the radius of the tube in feet squared times 3. FOOTINGS: - Poured concrete footings should be a minimum of 8" wider than the posts (4×4 post - 12" min. top of tube was same level as the deck the and not visible under the post and the post is 1 inch above the tube and deck on a hidden post leg I will find a link to that. This is an 8" tube on a 30" footing. Either that or use larger tubes, but that just. The red vertical line is the centerline of the 18" footing/sonotube. - The bottom of the footings must be a minimum of 36" below finish grade level. If the posts are in an area with a lot of moisture, or if the posts will be bearing a lot of weight, then it is recommended to make the hole deeper and place a gravel base below the sonotube. The posts are to be set in a 12" diameter sonotube footing, 36" deep. Tom dgbldr Veteran Contributor Join Date: Dec 2005 Location: Michigan Posts: 9569 #6 06-24-2013, 02:50 PM Re: Deck pier size This one will likely not have any post bearing. – The bottom of the footings must be a minimum of 36” below finish grade level. A good size for a common backyard deck is a 10" or 12" diameter for the sonotube and a 20" base diameter. Most of the larger pole barn companies are going to a concrete pier instead of posts. After the wide part at the bottom of the hole has. bags of QUIKRETE® Fast-Setting Concrete you need. I was going to cut each tube to 36 inches (they come in 48 inch lengths at my local Lowes). 7 cubic feet and 28 cubic feet respectively. Figure concrete volume by multiplying the height of the post and column in feet by the radius of the. I used 12 inch sonotubes with the same anchor and cheap cement (the fence post kind that was recommended to me) and 6 x6 posts, which turned out to be a bad idea. Just put 6 inches of gravel in the hole, then 6 inches of dirt, compact firmly and repeat. Based on the 2015 IRC, does anyone see an issue with the two bases sharing the footing (as. The block measures 6x12x12 inches and yes is heavy as hell, so aim well when placing in the hole, make sure there are no roots in the way and that the bottom is relatively flat. As per thumb rule and guidelines, for a 6″×6″ (150mm×150mm) size and 6 foot high fence post, you will need at least hole size of 2 feet (24″) deep and 1. Sonotubes come in a variety of sizes, from 6" to 60" in diameter and from 4′ to 20′ in length. He specifies the pier circumference and the size of the rebar needed. The height to the bottom of the beam (low point of the roof structure) is: Big Kahuna, Sombrero and Melbourne: 7 inches less than the length of the post that is above ground level, for example it would be 7 feet 5 inches for an. If my deck beam is a double 2x10 or a double 2x12, I prefer to make a notch in a 6x6 post. Share Improve this answer Follow answered Oct 10, 2014 at 18:43 user19347 87 2 Add a comment 2. B = Load on the footing in pounds. 5 feet wide for posts that extend 6 feet above ground level. It's still not a good idea. FOOTINGS: – Poured concrete footings should be a minimum of 8” wider than the posts (4×4 post – 12” min. If the following data is entered into the FootingPad calculator, the footing size recommended is a 16” diameter FootingPad. We are building a pergola-swing with two 6x6 posts as the main supports. 4k 15 68 169 Add a comment Your Answer. As a result, the savings from picking the smaller post size far outweigh the savings from choosing the larger post size. Footing Requirements by Shed Size This may be the single most important shed footing factor. What sizes do Sonotubes come in? Sonotubes come in a variety of sizes, from 6" to 60" in diameter and from 4′ to 20′ in length. A good size for a common backyard deck is a 10" or 12" diameter for the sonotube and a 20" base diameter. For posts, the sonotube should be a minimum of 4 feet deep in order to be securely anchored into the soil. This notched cut allows the beam to sit on a shelf I've cut into the wood post. This notched cut allows the beam to sit on a shelf I've cut into the wood post. 2 of the 4 cement piers cracked part way down where the achor ties were. 2 - Pour a 6" layer of 0-¾ crushed stone into the bottom of each hole and compact. width ), a two level deck or deck with roof – 24”x24”. As the lengths reach to eight feet or longer, you should highly consider upgrading your posts to a 6×6 size. In this particular case, it is due to the potential warping of a 4×4. DTT Deck Tension Tie: Horizontal application fastening railing post to deck framing. LUS Joist Hanger: Provides bearing and uplift resistance, features double-shear nailing for added strength. If you do not make the post holes perfectly straight, the sonotube will limit your adjustability because of the angle it will be on. The size of Sonotube you should use depends largely on the application. I use tubing, 36 inch deep with gravel on the bottom (30 inch tube+ 6 inch gravel, as per city requirement). The front deck dimensions are 20′ x 8′ We’ll be using three 6″ x 6″ posts to support the front edge of the covered deck’s steel roof. I used 12 inch sonotubes with the same anchor and cheap cement (the fence post kind that was recommended to me) and 6 x6 posts, which turned out to be a bad idea. C = Load carrying capacity of the soil in pounds per square foot (psf) Please Note: Because each post is. You'll be able to shift it around so that your pole is centered and plum, just leave enough room to work around the pole. I will be using those sonotube forms, 12″ diameter ones. This calculator is very useful if you need to calculate the measurement using Imperial measurements which uses feet units, or Metric measurements which uses meter units. jpg 522 KB Views: 1,694 See more Reply Save Like Nealtw · #10 · Apr 4, 2018 Reply Save Like Nealtw. A good size for a common backyard deck is a 10" or 12" diameter for the sonotube and a 20" base diameter. Likewise, people ask,what size footings do i need for a 6×6 post? FOOTINGS: - Poured concrete footings should be a minimum of 8" wider than the posts (4×4 post - 12" min. width), a two level deck or deck with roof – 24”x24”. Keep the sonotube up 12" from the bottom of the hole and you'll get a good bond. Okay today’s question is what size sonotube to use given a post size. Compact and level the gravel using a post or 2 x 4. 6 x 6 post should I go 10 inch or 12 inch?; this is for deck beam. (Example: For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground). you might want to look into that. A 6 x 6 post is actually 5 1/2″ square and a doubled 2 x 12 finishes at 3 inches. I've laid out footer locations and am about to dig for 8" sonotube forms. The posts are to be set in a 12" diameter sonotube footing, 36" deep. Most professionals will encourage you to consider going with a 6×6 deck post form the outset of the project. 6×6 Posts Capacity For most decks, 6 deck posts provide a robust, stable foundation. I did sonotube once, probably will not bother the next time because of the adjustability issue. 6 x 6 post should I go 10 inch or 12 inch?; this is for deck beam. Completing The Foundation Today we finished up the footings, the three main support beams, and began to frame the floor joist. How much concrete do I need? Bags of Concrete Needed—Four (4) Feet of Tube Height. Dig the post hole, making it three times the width of the post and at a depth equal to 1/3 to 1⁄2 of the above-ground length of the post, plus 6" (right). Then multiply by the number of posts to find the total amount of concrete needed for the project: 1. 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. jpg 522 KB Views: 1,694 See more Reply Save Like Nealtw. 069 cubic ft × 20 posts = 21. Sonotube Finish Free®. You will then need to determine. When ripping out 20-25 year old treated decks with embedded posts (and 6x6 retaining walls), I've seen mixed results. For a two-story building, the footing should be a minimum of 15-inches wide. if you notice, when you cut into a 6x6, the center of it sometimes 2"x2" square is very lightly treated if any at all. If you multiply the area of this section 5’ x 5’, you will get 25 square feet. I am going to pour 6 pier footers for a deck I’m building. Deck finished floor is 48 inch. I assume to prevent the frost from grabbing the post. A 30 kg (66 lb) bag of Quikrete Fence & Post should fill 0. From backyard decks to bridges and parking garages, Sonotube offers: Cost savings; Durability; Versatility and ease of use; Industry-leading technology; Plus, Sonoco. LCE/AC Retrofit Post Caps: Two-piece cap may be installed before or after lumber is in place. 85 cubic feet of space the post will take up when set in the hole, equals: 1. I'm building a pergola over a paver patio. Deck finished floor is 48 inch above grade so footing with go below frost line or 48". Footings Deck Footing Size Chart Footing Installation Deck Footing Size Chart In order to determine the proper size for your footings, you will need to establish how much total weight they are going to have to support and what kind of soil they are covering. top of tube was same level as the deck the and not visible under the post and the post is 1 inch above the tube and deck on a hidden post leg I will find a link to that. All of our brackets have triple coat rust protection. So, 6×6 posts more than the 4×4 posts. If you're using it for a foundation for a structure like a shed, deck, or gazebo, you'll want to use a size that's big enough to provide enough. You can use 8" sonotubes to save concrete. You’d be shocked at how many bags of concrete mix you’d have to mix by hand to fill a form tube. Compact and level the gravel using a post or 2 x 4. If my deck beam is a double 2x10 or a double 2x12. I have a 6 foot fence plus 2 foot trellis built with this technique that's perfectly vertical after 10 years. Adding bracket on concrete footer - Finishing sonotube with 6x6 bracket for deck Through Our Eyes 8. What sizes do Sonotubes come in? Sonotubes come in a variety of sizes, from 6" to 60" in diameter and from 4′ to 20′ in length. classicT Sawhorse Joined Aug 2, 2017 Messages 2,359 Location. com/_ylt=AwrFdDh2hWFkMSgxYdZXNyoA;_ylu=Y29sbwNiZjEEcG9zAzIEdnRpZAMEc2VjA3Ny/RV=2/RE=1684141558/RO=10/RU=https%3a%2f%2fhandymansworld. The red vertical line is the centerline of the 18" footing/sonotube. You can multiply this area by 55 lbs per square foot loading to come up with 1,375 lbs total load. So, if you were planning to install a 4×4 post, a 12-inch Sonotube would be appropriate. What size sonotube do I need for a 6×6 post? The rule-of-thumb is to use a tube diameter 3 times the post width, therefore use a 12” diameter Sonotube for a 4×4” post. net%2fsonotubes%2f/RK=2/RS=su7XZda0GHN3guEvOLeSOVHJp44-" referrerpolicy="origin" target="_blank">See full list on handymansworld. This is due to the layers of the material and the intricate process of manufacture. This calculator is very useful if you need to calculate the measurement using Imperial measurements which uses feet units, or Metric measurements which uses meter units. depends on the size of the square What does 6X6? 6x6=36 Whats 6x6? 36 How many 6x6 patio pavers are needed to make a 12x12 stone patio? 576 should do it. If you can dig down 4 feet, it's really easy to put a sonotube down and fill it with concrete and put the 6x6 (you might only need 4x4depends on deck dimensions) on that. 5 feet (18″) wide in square shaped. 85 cubic feet of space the post will take up when set in the hole, equals: 1. 03 cubic yards step 6: Multiply volume and number of S size bags to determine the number of bags needed for sonotube; Estimating the concrete bags count for 40 lbs, 50 lbs, 60 lbs, 80 lbs, and 90 lbs for 6 inches sonotube – Number of 40 lbs bag = 91 * 0. The beams here will be a double 2x10 with an approx. To find the concrete needed, start by subtracting the volume of the post from the volume of the hole: 1. The sonotube calculator allows you to enter the following components: Select calculations in cubic yards or cubic meters. Since your fence posts are relatively easier to construct, shorter tubes are necessary and do not require external bracing or support. Sonotubes are noted for their. You can refer to this table for the different sizes for each type of Sonotube available: How many bags of concrete do I. 069 cubic ft × 20 posts = 21. I tend to gravitate to making a traditional lap joint at this location. Of course, you can get a 24" base size and it will spread weight over an even greater surface area. For loose or sandy soil, using a tube form is recommended (left). 25 square inch cross-sectional surface area. FOOTINGS: – Poured concrete footings should be a minimum of 8” wider than the posts (4×4 post – 12” min. A 6x6 post base that attaches the post to the pier My goal is to minimize hinging by making good connections, by making things plumb/level/square and by using geometry. Their site recommends three time the post width so that would mean an 18" Sonotube. Drive one vertical rebar into the ground in the center of the hole, then pour a 4-6” (100-152 mm) footing. When you pour concrete footings, hold the cardboard concrete form tube about 12 in. As for deck footings, this same rule of thumb applies. You can refer to this table for the different sizes for each type of Sonotube available: How many bags of concrete do I need to fill an 8-inch Sonotube?. Attachments IMG00143-20140512-0944. I want to build a small dock on my pond. Enough where they had become structurally unsound. By code you need 2" beyond the post bearing. Sonotube typically come in 24″ and 48″ diameters with 3′ long sections, which equates to a volume of 6. The red vertical line is the centerline of the 18" footing/sonotube. Dig the post hole, making it three times the width of the post and at a depth equal to 1/3 to 1⁄2 of the above-ground length of the post, plus 6" (right). The problem is that there were no 12" tube anywhere to be found so I decided to go with the 10" tubes. 5' on center of post with 6x6 posts (4 posts), tied together with sandwiched 2x12 beams. 4 x 4 post should I go 8 inch or 10 inch?; this is to support a pergola on top of deck. You will then need to determine the total amount of concrete by multiplying the number of sonotube you need by their respective volume. Deck questions-sonotubes, concrete hardening time, post to beam connection. Based on the 2015 IRC, does anyone see an issue with the two bases sharing the footing (as offset), the loads are fine. The base should be even to properly install the Sonotube on its vertical orientation (or plumbed) and prevent shifting once the concrete is introduced. The 12" Sonotube seems small for a 6x6 post. From what my fence contractor told me, concrete does more than "anchor" the post in place. Calculate the post volume Divide by 12 to convert the post diameter to feet: 3. Suitable for both wood and metal posts CONS The most time-intensive method 2. Of course, you can get a 24" base size and it will spread weight over. Depending on the look you are going for I guess. The footing projection for a 6x6 would make it a 9 1/2" pier or 10 for a minimum. By code you need 2" beyond the post bearing. Generally speaking, Sonotubes come in a range of sizes, from 6" to 36" in diameter and from 1' to 8' in height. 3 - Insert the form tube (sonotube). You can refer to this table for the different sizes for each type of Sonotube available: How many bags of concrete do I need to fill an 8-inch Sonotube?. Use the formulas above for volume. Form tubes are available in diameters of 6 inches (15 cm), 8 inches (20 cm), 10 inches (25 cm), and 12 inches (30 cm). I have calculated the volume of the cylinder (4071. Sonotube Diameter Sonotube Height Sonotube Quantity. Then multiply by the number of posts to find the total amount of concrete needed for the project: 1. width, 6×6 post – 14” min. up from the bottom of the footing. I used 12 inch sonotubes with the same anchor and cheap cement (the fence post kind that was recommended to me) and 6 x6 posts, which turned out to be a bad idea. As far as a concrete pole pier this usually has to be worked out by a structural engineer familiar to you area. 21K subscribers Subscribe 785K views 6 years ago Here we are. width, 6×6 post - 14" min. As per general thumb rule and guidelines, for a 6×6 post you will need holes should be at least 2. So, if you were planning to install a 4×4 post, a 12-inch Sonotube would be appropriate. The height to the bottom of the beam (low point of the roof structure) is: Big Kahuna, Sombrero and Melbourne: 7 inches less than the length of the post that is above ground level, for example it would be 7 feet 5 inches for an 8-foot post (7’6″ if using post mounting hardware) or 9 feet 5 inches for a 10-foot post (9’6″ if using post mounting …. Since your fence posts are relatively easier to construct, shorter tubes are necessary and do not require external bracing or support. A 30 kg (66 lb) bag of Quikrete Fence & Post should fill 0. Volume of 6” sonotube in cubic yards = 0. is required it would be best to have cmu's or sono tubes to grade and 6X6's from that point. We are building a pergola-swing with two 6x6 posts as the main supports. Sonotube Builder’s Tube concrete forms are built strong to withstand the heavy pressure of wet concrete. As for deck footings, this same rule of thumb applies. Re: 6x6 post foundation. Can you anchor a deck post to concrete? Quote from the video:. width), a two level deck or deck with roof - 24"x24". The one down side to this is the extra digging involved. The increased security that a 6×6 post provides is significantly more valuable than 4×4 posts. Since your fence posts are relatively easier to construct, shorter tubes are necessary and do not require external bracing or support. So, six-foot-high fence posts ideally need to be buried three feet into the ground. If you can dig down 4 feet, it's really easy to put a sonotube down and fill it with concrete and put the 6x6 (you might only need 4x4depends on deck dimensions) on that. The calculator will indicate the number of 50 lb. lol Share Improve this answer Follow answered Sep 22, 2020 at 23:23 JACK 71. If you’re installing deck boards at a 45-degree angle to your joists, you’ll need to tighten up your joist spacing to 12-inches on center. Deck questions-sonotubes, concrete hardening time, post to beam connection. 495 cubic feet per bag which works out to 2. As the lengths reach to eight feet or longer, you should highly consider upgrading your posts to a 6×6 size. Divide the total by 27 to get the cubic yardage you need to order. According to building codes, there is no clear answer on when you should install a 4×4 vs. A = Surface area of the footing. Local Building Codes Local building codes can sometimes have different joist spacing requirements. first time I've seen that detail. that means you have to do your calculations for concrete over again. Just a side note that may help. Some of them showed significant rot. Here’s how we get there: Building Width: Soil Capacity: Post Spacing:Snow Load 40 feet 3000 psf 8 feet 20 lbs.