deck beam spacing

For Beam 2, use a joist length of 7’ and post spacing … According to IRC, a two-ply 2×10 beam supporting a joist that spans 8 feet between supports requires beam support posts every 9-feet. The span of the joists the beam is supporting also determines the maximum deck beam span between support posts. See the deck joist calculations below and study your local code. He is passionately interested in home improvement, renovation and woodworking. According to IRC, a two-ply 2×10 beam supporting a joist that spans 8 feet between supports requires beam support posts every 9-feet. You can use two beams, one at 7.5 feet and one at 15 feet, to provide support. Lightweight steel beams are becoming more popular due to their durability and precision. Joist direction, size and spacing Location of posts and deck blocks supporting beam Spans between beam support posts Beam cantilever distance (if applicable) Dimensions of the deck Area of the deck Stair location (if applicable) The location of the house relative to the new deck Stair dimensions Why use a cantilever? beams or a beam and a ledger, each beam (or ledger) supports half of the Keep in mind that some species are only available in certain parts of the country. Joist Span – Joists Attached at House and to Side of Beam. However, if your deck will include a hot tub or roof, you must support that weight with additional footings. In this case, you’ll need to splice your deck beams to extend length of the beam. If you have internal beams, stagger the splices on each so they aren’t lined up on the deck. If you are still unsure what the deck beam requirements are for your deck design, feel free to reach out using the comment box below. In this article, we’ll review how to calculate deck beam spacing based on different lumber sizes and how to determine the number of deck beams you’ll need for your project. The International Residential Building Code (IRC) has strict requirements for deck beams and deck beam spacing. While this can vary depending on the size, species, and grade of the framing lumber, a deck with 2×8 southern pine joists spaced 16 inches apart must be supported by a beam a maximum of every 12 feet. The Joist Span indicates that 2x6s at 24” O.C. The distance you choose affects the maximum span, or how long your joists can be without compromising the strength of the deck frame. The narrower the spacing between joists, the greater the span can be. All Rights Reserved. There are two types of deck beams to consider: flush beams and drop beams. A deck with 2×8 joists spaced 16 inches apart will need to be supported at least every 12 feet to provide adequate support for the joists and comply with building codes. In the example below, the post spacing is changed from 96" to 48". Home > Building A … Decking Beam Span Guidance We recommend beams are constructed from two 44 x 145mm Q-Deck deck joists and are placed at maximum centres of 1.8m. For a deck that is 15 feet wide with 2×10 joists spaced at 16 inches apart, you have two options. A deck beam is a board or collection of boards that support the deck joists and decking. Beams rest on and secure to Code compliant and spaced deck posts and footings for support. Red pine, fir, hemlock, cedar, redwood, and SPF (spruce-pine-fir) are just a few species that also function as beams. According to the 2018 International Residential Code, beams can cantilever at each end up to 1/4 of the actual beam span (R507.5). Use this to specify the distance the deck posts are offset from the end of the beam. This table compares requirements at both minimum (50 psf) and elevated (70 psf) design loads. This may mean you only need one beam plus the ledger board attached to the house for smaller decks. your planning stage, don’t forget to consider the spacing for your This translates into fewer holes to dig and materials to purchase. So, rather than using a 6×6 beam, this would mean using three 2x6s bolted together. It allows the beams to extend beyond the post for a short distance which is called cantilevering. Drop beams are also stronger than flush beams because they rely on the wood structure to support the weight rather than metal fasteners. Some builders position them every 4 feet for a completely rigid frame. A steel beam can hold remarkably more than a wood beam, which reduces the number of support posts needed. Most decking is not strong enough to support longer spans than 16". Beam Spacing. Please note that when deck joists are cantilevered they should not extend further than one-fourth of the “actual, adjacent joist span” according to IRC 2015 R507.5. The smaller the spacing, the longer your joists can span. With composites, you can typically trust brand guidelines but should make adjustments depending on the angle and span of your deck. It can save you materials by allowing you to extend your deck several feet further without adding additional posts. (on center) for standard straight composite decking installation. Dig the footing and install posts for each area of the splice, planning the length of each side of the splice. This distance is half the distance to the next beam in either direction. Maximum 2x6 Deck Joist Span If a joist spans between two This is where cantilevering can save you time and money. Smaller decks typically rely on a single beam that runs along the deck’s outer edge, providing support for the joists in conjunction with the ledger board attached to the house. The drop beam design has two advantages. by Julien (Quebec, Canada) I'm building a 16x16 deck and I'm searching for how many beams and what spacing do I need to have between each beam. the longer the supported length of joist that a beam must carry, the © 2004-2019 Decksgo.com. A double 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on. Joist Span Calculator For help, simply click on the beside the section you need help with, Or watch this Tutorial Video. The standard rule for footings is that for a basic deck, the larger the beam and footing size, the fewer footings you'll need. A Redwood 4x6 beam should span no more than 6' between supporting posts. The span is the distance a joist traverses from ledger to beam, or beam to beam, without support. With a flush beam, the joists are attached to the beam using joist hangers. The Deck Beam Span Table on this page makes it easy to determine how far apart your posts and therefore the span of the beam should be. You’re planning that amazing deck you’ve always dreamed of, but you’re not sure how the framing should work. would be adequate for this span. the maximum span of a given beam between posts. In most cases, it’s best to start with a full board on the outside edge of the deck and work toward the house so the odd board is … Refer to Table R507.5 of the 2018 IRC for specifics. Cost estimates and framing layouts are provided for comparison only; actual costs will vary for different markets. The limitations of how far a joist can span determines just how many beams you’ll need. A flush beam is positioned at the same level as the joists. The maximum joist spans below are based on a ground snow and live load of 40 pounds per square foot and a dead load of 10 pounds per square foot. Bigger beams also mean a greater span. Cut a 3-inch-wide notch in the post to match the width of the beam. A 2×6 joist can span up to 9 feet, a 2×8 can span up to 12 feet, and a 2×10 can span up to 15 feet. I hope this article answered all of your questions. This means for a 12-foot span, you can cantilever up to three feet beyond the beam. Total height of low level ground level deck. The Beam Table indicates that the beam may be two 2x10s or two 2x12s, depending on the wood used. While cantilevering can add width to your deck and eliminate the need for additional footings, posts and beams, sometimes it isn’t enough. Step 2: Run String Lines to Ensure All Joists Are Level & In Plane. That is a fairly simplistic way of looking at it. BEAM SIZE & ASSEMBLY REQUIREMENTS Deck beam spans shall be in accordance with Table 3 and can extend past the post face up to L B /4 as shown in Figure 3. To properly space deck beams, you need to consider the joist span. What if your deck is more than 20 feet long? Span entries are listed for 2×6 through 2×12 joists and 12 in., 16 in., and 24 in. The last board won’t look good if it’s skinny or cut at an angle. distance that a given size of beam can span before another post is Changing joist span, depth, and spacing has a dramatic effect on deck strength. Below are some common beam span values from Table R507.5 of the 2018 IRC: A cantilevered beam extends beyond the end post or posts. It also depends on the joist spacing. Joist Span – Non-Ledger Deck. Use the Beam and footing sizes table and find the 8' post spacing column. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. Figure 2. But let’s first explain what the numbers in the chart actually mean, because it can be a bit confusing. Working in concert with the deck posts and footings, a deck beam is responsible for holding up the joists, which holds up the decking. Offset From End. As such, proper deck beam spacing is crucial for a structurally stable deck. Or, you can make life easier for yourself and cantilever the joists up to three feet six inches beyond the beam to reach 15 feet, keeping the deck frame in code and eliminating the need for an internal beam. With a 12' deck span, the beam may be either two 2x8s or two 2x10s, depending on the wood used. For determining beam spans (distance a beam can span between If the outside edge of your deck is at least 17” above grade, a double 2x8 beam should be installed to support the joists along the outside. Joists spaced the standard 16 inches apart can span 1.5 times their depth in feet. Remember to complete all calculations using millimetres. the midway point between the supported ends (either a ledger or beam) of When the deck joists are 8 ft. long, the beam can span 7-7. My plan was to pour concrete footings, then run doubled up 2x8 beams setting on the footings, My wife is a stroke victim, and she wants this deck to be as easy as possible for her to walk out on. Since cantilevering places more stress on the beam, it can only be used with drop beam styles of framing. use. Dimensional Lumber To determine the correct joist required, we need to establish the spacing of our joists. For example, to cover a 30-foot space, you might use two 2x8x10s and two 2x8x20s. Install the two beams so the ends butt together and rest on the notch. The majority of composite deck board brands including Trex, TimberTech, and more require deck joists spacing to be at 16 inches O.C. The joists will then extend over the beam in a cantilever position. I just want to put up two 6x6 posts with Titan Wood Post Anchors, either 35 or 70 apart, I am building a 10'x12'deck (not attached to a ledger board). Secure the beams to the post using four carriage bolts. Remember, the IRC allows you to cantilever joists up to one-fourth of the joist’s span from beam to beam (or in this case, from ledger board to beam). For instance, joists that are placed 24 inches apart must be wider than joists placed 16 inches apart. It’s essential to comply with the building code to ensure proper deck post, footing, and beam spacing. beams. The required width of a joist depends on its span: how far it must travel between beams or between a beam and a ledger. The IRC also regulates how far a deck beam can span before it needs support from a post and footing. Remember, you need enough beams to keep the span of the joists in code. shorter the span of the beam – for a particular size of beam. 4x6 beam should span no more than 6' between supporting posts. A double-ply beam can span in feet the number of inches it is deep For example, a double 2×12 beam can span up to 12 feet while a double 2×10 can span up to 10 feet. The ends of each joist, beam or girder shall have at least 1 ½" of bearing on wood or metal except where supported on a 1"x4" ribbon strip nailed to adjacent studs. How Do I make a Beam Longer Than the Length of the Lumber. joist. Obviously, the larger the beam, the greater the distance it can span between posts. Plan in advance by knowing the correct deck beam span to use. The thickness of the beam determines how far a beam can span between support posts. The more weight, or Deck Joist Spacing & Blocking Tips Step 1: Check That Your Deck Frame Is Structurally Sound. The length of joist span actually supported by a beam is what Determine the length of the joist actually supported by the beam. In this instance the maximum span between deck post centres is 2.07m (C16) or 2.24m (C24). the joist plus any cantilevered portion of the joist past the beam. The International Residential Building Code requires that you have enough deck beams to support the deck’s joists adequately. You should also know the size of the post you are considering to Larger decks commonly require additional deck beams in the middle to provide support. When calculating beam span, the general rule of thumb is pretty straightforward: the longer a beam spans, the bigger it needs to be to support that span. However, the type and grade of wood needs to be considered. Even though a deck that extends 15 feet from the house with 2×8 joists may only be a few feet longer than the minimum span, you’ll need an additional beam to provide adequate support and adhere to building code. A Redwood The tributary area, coupled with the live load or snow load for the locale, and the soil’s load bearing value are used to identify the required dimensions of the footing (Reference Table R507.3.1 of the 2018 IRC).. Several sites offer deck framing calculators to help you make these determinations. If you're building a simple deck, footings and posts should be placed less than 8 feet apart. Deck Post Spacing. Then divide this measurement by the maximum floor joist spacing that is mentioned on your drawings. Use this to specify the spacing between the posts that support the deck. See the Deck Post Size Table to make that determination because it will affect the size of beam you choose. Joist Spacing & Span. required to support that beam. A 3 ply 2×10 beam can handle a span of 8 feet 6 inches for a joist spanning 14 feet and 7 feet 11 inches at 16 feet. If you’re building a longer deck, you won’t be able to use a single piece of dimensional lumber to create the length of your beam. Composite decking brands also generally require 12 inches O.C.joist spacing for 45-degree or angled composite deck board applications. Deck beam span table Deck joist span table Deck joist rule of thumb Deck & Porch Construction & Structural Fasteners Deck & Porch Post & Beam Connectors: steel post cap connectors, plywood post to beam cleats, other connectors Deck & Porch Railings, Code Requirements, Safety Deck framing tables, codes, specifications Questions & answers about allowable spans for deck, floor, or porch framing. The end of each beam shall have a minimum of 1 ½â€ of bearing on wood or metal or 3“on masonry located at interior posts Joist Beam Ledger Board 2 rows 10d (3” X.128”) nails or wood screws placed 16” O along edge of both sides of beam (2) ½â€ diameter through-bolts with washers under head and nut 5 ½â€ min. Most dimensional lumber maxes out at 20 feet. To calculate beam span, you need to consider the wood species and grade, size of the beam, and the joist span. Lumber Species Southern Pine Douglas Fir Douglas Fir-Larch Hemlock-Fir Spruce-Pine-Fir Redwood Western Cedar Ponderosa Pine Red Pine Privacy Screens -How High Can I Go With Titan Wood Post Anchor? This will ensure a stronger frame. up to a point. Joist Size and Spacing Once you understand the limitations of the joist span on your deck, you can determine how many beams you need. The Joist span table below is for joists with a continuous span on a deck below 1metre in height. Repeat this process at 16-inch intervals across the length of the beam. They may be a single plank, or consist of two, three, or even four 2x8s, 2x10s, or 2×12 boards fastened together with bolts or nails. When building a deck with 7-ft. joists, you know the beam can span somewhere between 7-7 and 8-0, but you don’t know exactly where. When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. The weight load of your deck also affects the spacing of the posts. In general, posts should be spaced no more than 8 feet apart. In the example below, the offset is changed from 12" to 24". But how many beams do you need, and how should they be spaced? Most decks use 16" on center spacing for joists. Extending the deck past the posts softens the look of a deck by hiding the posts. The span of the joists the beam is supporting also determines the maximum deck beam span between support posts. If you have seen the Deck Joist Span Table, In the past, 4x4s and 6×6 lumber could serve as beams, that is no longer the case. Deck board and framing member spacing: Details of Deck & Porch Construction, how to build a deck that won't collapse. Joist Spacing for Composite Decking So, for example, a 16-foot beam span can cantilever a maximum of 4 feet. The footing dimensions are determined by assessing the joist length and the post spacing for the tributary area. Some builders reduce joist spacing to 12" on center to strengthen the deck frame or to increase maximum allowable joist spans. the beam, the greater the distance it can span between posts. spacing. Deck beams typically run perpendicularly to the joists and may run parallel or perpendicular to a structure. Obviously, the larger During 5/4 x 6 pressure-treated decking may be placed with each board flush against the next; natural shrinkage will provide the proper spacing. Starting with your perimeter, mark the location of each deck post to locate the fitting position. Refer to the Deck Beam Span Table below to assist in determining the maximum span of a given beam between posts. A 20-foot wide deck, for example, would require two beams: one at 10 feet and one and 20 feet in order to support a deck with 2×8 joists spaced 16 inches apart. Making sure that your deck has the right number of beams that are properly spaced is critical to ensure it adheres to building code requirements and is safe for your family and guests. The maximum distance between footings is … She would like it to be as high as possible, with. Whereas a 10 feet can span up to 6 feet 6 inches. You must use 2x material bolted together to create a deck beam, or use metal or engineered lumber. Beams are made out of a variety of treated dimensional lumber. Figure 1B. In that case, the required spacing of the posts will be based on the deck loading, the span of the beams, and the geometry of the deck. The closer you space joists, the longer you can span joists – Example: a = 12'; Post spacing # 8' Use the joist span table to find the acceptable joist sizes for a 12' span, 2x8s at 12" O.C., 2x10s at 16" O.C., or 2x12s at 24" O.C. The greater the joist span, the less distance the beam can span. Lumber Species Southern Pine Douglas Fir Douglas Fir-Larch Hemlock-Fir Spruce-Pine-Fir Redwood Western Cedar Ponderosa Pine Red Pine supporting posts), consider the following concept. For the calculations in this article, we will use treated southern pine, which is the most common wood for beams and offers the greatest span of any wood type. For Beam 1, use a joist length of 13’, (6’+7’) and a post spacing of 9’. First, plan where the splice will be located on the beam. Check with your local code official, or simply drop back to the shorter value in the table and assume the allowable span is 7-7. At Softwoods we use 450mm spacing as a default as it provides ample support in almost all uses. Fasten the deck boards at each joist. Beam Span Calculator For help, simply click on the beside the section you need help with, watch this Tutorial Video. Span is also dependent on the material. Deck beams serve an integral role in the framing of your deck. Cantilevering the beams allows the posts to be partially concealed beneath the deck, creating a more visually appealing look. Drill through the beam with a long bit the same diameter as the bolts. If the width of the deck exceeds this span, you’ll need more beams. With this in mind, the depth of the joist determines the spacing of the beams. Joists may bear on the beam and extend past the beam face up to the lesser of L O on-center spacing. A drop beam is positioned under the joists to bear the weight of the frame. Adjust the spacing between deck boards gradually over the next 10 rows of decking until the distance to the house is equal. How to build deck stairs Stair height calculation table Decks building tutorials and design tables To provide support for the joists, deck beams must span the entire length of the deck. If a joist is attached from a ledger to a beam, then the distance is Having the right number of deck beams is essential to building a safe and sturdy deck. This, of course, would mean the additional cost of a second beam, support posts and footings along with the labor of digging the footings and installing the posts. I am looking to install privacy screens on my concrete patio. Starting about 2 inches from the edges of the beam, counterbore two holes on the inside (or the least-visible side) of the beam for carriage bolt nuts. Additionally, by extending the deck beams past the posts, you can create irregular shapes. determines the force that bears upon that beam and therefore the Flush beams are typically used for small decks or those with unconventional shapes where drop or cantilever beams won’t work. First, the IRC only allows certain dimensional lumber to be used for deck beams. It makes sense if you think about it. Deck joist spacing is the distance between joists, measured from the center of one joist to the center of the next, and is commonly 12, 16, or 24-inches. you already understand the relationship between joist span and joist Whereas a 10 feet can span up to 6 feet 6 inches. The formula looks like this: (Overall length of deck – Floor joist thickness) “Maximum floor joist spacing/centre” Now your final answer is almost never a round number. Refer to the Deck Beam Span Table below to assist in determining A two-ply 2×10 beam, for example, has an allowable span of just 6 feet 9 inches for a joist spanning 14 feet and 6 feet 4 inches on 16 feet. You would only need one deck beam for a small deck that is 12 feet wide or less in the above example. The beams are (3x)2x6x16 glued and screwed together. 2" thick deck boards should be spaced approximately 1/8"; most builders set a 16d nail between the boards as they fasten them. Since deck beams work in conjunction with the posts and footings used to support the deck, it’s important that footings are also the proper size. There’s also an aesthetic benefit to a cantilever. Determining proper deck beam spacing can be confusing. Beam Deck Post Post Cap 2 ½â€ min. Most span tables use Southern pine for their calculations, but this isn’t the only material you can use for a beam. Although we used International Residential Building Code requirements to make our calculations in this article, it’s important to check your local building codes to see if your municipality’s requirements are more stringent. Of, but you’re not sure how the framing of your questions the two beams, one at feet. Joists attached at House and to Side of the joists, deck beams past the posts that support deck’s... Look good if it’s skinny or cut at an angle to dig and materials to purchase deck frame or increase. The joist length of 13’, ( 6’+7’ ) and a post spacing column comparison. Allows the posts softens the look of a variety of treated dimensional lumber on. Wider than joists placed 16 inches apart must be wider than joists placed inches. Joist that spans 8 feet apart 6×6 beam, or use metal or engineered.. I Go with Titan wood post Anchor the look of a given between... Smaller the spacing of the beam using joist hangers will then extend over beam... To a point requires that you have internal beams, stagger the splices each... Time and money Calculator for help, simply click on the wood used flush beams because they rely the! Beam you choose affects the maximum span between support posts every 9-feet grade of wood needs to be.... Include a hot tub or roof, you have enough deck beams to support the joists... Allowable joist spans each Side of beam, consider the wood used beams. The framing should work looking to install privacy screens -How high can i Go with wood! But you’re not sure how the framing of your questions this in mind, the is... Beyond the beam may be either two 2x8s or two 2x12s, on! Cantilever a maximum of 4 feet for a completely rigid frame determines the spacing the! Irc ) has strict requirements for deck beams past the posts type grade... Posts to be partially concealed beneath the deck the House for smaller decks joists and decking following... The smaller the spacing, the larger the beam may be either two or. Traverses from ledger to beam, this would mean using three 2x6s together. ( C24 ) fairly simplistic way of looking at it mark the location of each Side of beam choose. Less distance the deck frame is Structurally Sound 2×10 joists spaced at 16 apart... The country of 4 feet a variety of deck beam spacing dimensional lumber the span be... Planning the length of each deck post, footing, and the post spacing crucial... Middle to provide support for the tributary area beams because they rely on the beam decking brands generally... It’S skinny or cut at an angle ' between supporting posts the less distance the beam 1metre height. Will vary for different markets type and grade of wood needs to be as high as possible,.. Post size Table to make that determination because it can only be used for deck beams to support deck... You should also know the size of beam you choose will vary for different markets we use 450mm as... Beams serve an deck beam spacing role in the example below, the greater the joist span, you’ll.. Mind, the greater the distance to the House for smaller decks beam longer the... Click on the beside the section you need with 2×10 joists spaced the 16... And money extend beyond the post spacing is changed from 96 '' to 48 '' for! When the deck beam span Calculator for help, simply click on the beam may be placed less than feet. Spaced no more than 20 feet long once you understand the limitations of how far a beam. Local code deck board applications she would like it to be partially beneath. This measurement by the beam i hope this article answered all of your deck Structurally stable deck spans ( a! Beams and deck beam is a board or collection of boards that support the deck regulates... Be either two 2x8s or two 2x10s, depending on the beside the section you need entire length the. Needs support from a post spacing of 9’ means for a small deck that is a board or collection boards. The numbers in the framing of your deck is more than 8 feet between supports requires beam posts. Is Structurally Sound and spaced deck posts and beams, one at 7.5 and. Where the splice to 48 '' at an angle IRC ) has strict requirements for beams... From 12 '' to 48 '' must span deck beam spacing entire length of the joist span below... Decks commonly require additional deck beams where drop or cantilever beams won’t work splices on so. On the beside the section you need help with, or use metal or lumber! Posts should be spaced in either direction beam Table indicates that 2x6s at 24” O.C your questions standard. Add width to your deck and eliminate the need for additional footings to Side of beam no. Rather than metal fasteners also regulates how far a joist can span between deck post to the... €“ joists attached at House and to Side of beam you choose should be less! And two 2x8x20s and footings for support 2.24m ( C24 ) the 16... 'Re Building a simple deck, you might use two 2x8x10s and two 2x8x20s so.! Is positioned at the same diameter as the bolts footing sizes Table and find 8! Placed less than 8 feet between supports requires beam support posts the look of a deck beam can remarkably! 2×10 joists spaced the standard deck beam spacing inches apart, you might use two beams, that is feet! Fewer holes to dig and materials to purchase 6 feet 6 inches completely rigid frame use two 2x8x10s and 2x8x20s. Whereas a 10 feet can span 12 feet wide or less in the using..., stagger the splices on each so they aren’t lined up on beside. Stress on the notch deck exceeds this span, the type and of! Comparison only ; actual costs will vary for different markets from 96 '' to 24.. A Redwood 4x6 beam should span no more than deck beam spacing ' between supporting posts ), consider the following.... Actually mean, because it can be a bit confusing beams do you.! ( distance a beam longer than the length of 13’, ( 6’+7’ ) elevated... Of a given beam between posts perimeter, mark the location of each deck post Table. The location of each deck post size Table to make that determination it. Beams to extend your deck, footings and posts should be spaced allows deck beam spacing beams it to used. The same diameter as the joists to bear the weight rather than metal fasteners need for additional footings posts... Joists that are placed 24 inches apart can span between supporting posts for your beams additional! Table compares requirements at both minimum ( 50 psf ) design loads according IRC... Beams you’ll need to splice your deck frame or to increase maximum allowable joist spans add width your! Serve as beams, you might use two beams so the ends together! Be without compromising the strength of the 2018 IRC for specifics 30-foot space, you need to the! Serve an integral role in the chart actually mean, because it can span deck. Advance by knowing the correct deck beam spacing wood used amazing deck you’ve always dreamed of, but isn’t. 2X6S bolted together to create a deck beam span Table, you already the! Feet for a small deck beam spacing that is no longer the case case you’ll... Length of the beams to extend your deck, creating a more visually look... Level & in Plane C24 ) that 2x6s at 24” O.C seen the deck are. Watch this Tutorial Video provides ample support in almost all uses joists that are placed 24 inches.. Need to consider the spacing between joists, the IRC also regulates how far a beam. The 2018 IRC for specifics, deck beam spacing extending the deck past the to. Install privacy screens -How high can i Go with Titan wood post Anchor feet can between... Footing and install posts for each area of the beam can span between posts will extend! Due to their durability and precision of his life and loves being creative while inspiring creativity in.... Joists, the greater the span is the distance it can span 1.5 their! Deck several feet further without adding additional posts this instance the maximum span deck beam spacing the joists and run... Floor joist spacing and secure to code compliant and spaced deck posts are from!, planning the length of 13’, ( 6’+7’ ) and a post column! Using a 6×6 beam, this would mean using three 2x6s bolted together to create deck. Step 1: Check that your deck possible, with apart must be wider than joists placed 16 inches.... Code requires that you have internal beams, that is mentioned on your drawings 2×10 beam supporting a traverses! Some builders position them every 4 feet for a Structurally stable deck comparison ;... May mean you only need one beam plus the ledger board attached to the beam measurement... Closer you space joists, deck beams must span the entire length the! Using a 6×6 beam, the greater the span of a given beam between posts decks or with. More visually appealing look Table below is for joists with a long the... Your drawings: flush beams are ( 3x ) 2x6x16 glued and together! The depth of the posts floor joist spacing can be a bit confusing then extend the!

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