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joist spacing for hot tub deck

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joist spacing for hot tub deck

Elevated decks often require greater post and beam support for shorter deck joist spans. According to the American Wood Council the maximum span for 2×6 floor joists on 24″ centers is 7’7″. Based on articles posted at this website I went with a deck load of 100psf to hold the hot tub. Join Date: Sep 2013; Posts: 1367; Location: Milton, ON; Real Name: Glenn; Share Tweet #2. A hot tub may be part of the purpose but it affects the shape and size of the deck too. Preservative-treated lumber, wood type and grade, span, spacing, cantilevers, even notches, cuts, and drill holes are covered. for perpendicular and 8”o.c. For joists I would go with 2 x 10 for the entire project and for under the tub use a "tic tac toe" type of joist grid. There are four 6" x 6" support posts underneath the spot in which the tub will be put, they are spaced 5' from eachother in one direction and 7' in the other Deck joists are planks laid on edge in a spaced pattern to which the deck boards are fastened. Also, putting extra 4x4 posts under each corner of the hot tub. Blocking is also frequently used to create a frame or racetrack to support deck board designs such as picture frames, herringbone, zipper, parquet, and diamond patterns. Since our current one isn’t, I’ve wondered how to determine if a deck can support a hot tub. The average 8' x 8' hot tub weighs over 5,000 lbs when filled with water and people. Total height of low level ground level deck. Privacy Screens -How High Can I Go With Titan Wood Post Anchor? Regardless of the span, 2×6 joists are usually limited to ground-level decks without railings. This guide outlines the method for installing a single level deck with a timber frame and horizontal deck board positioning. The thickness and width of a joist determine the maximum distance it can span. Bear in mind that other decking designs will require different techniques and joist spacing. Free-standing decks don’t have a ledger. This deck design doesn’t allow for cantilevering of the joists, so the size is limited to the span permitted. All joists, beams, headders, and ledger will be of 2" x 10" pressure treated lumber . Most span and spacing tables present values for common dimensional lumber sizes and species. is that a joist can span 1.5 times its thickness in feet – so, for a 2×8 calculate 1.5 x 8” = 12’ for the span. If you're building a simple deck, footings and posts should be placed less than 8 feet apart. You can use the plan below to construct a hot tub deck in one afternoon. Deck joist spacing for composite decking is the same as that for 5/4” boards. and 16”o.c. The planks are nominally 6” x 5/4” and usually spaced 1/8” to 3/8” apart. So to summarize my center post is going to be holding the biggest load of 22ft2 x 100psf = 2200lbs.I've had no problems calculating my footings (10" diameter and 4' depth) and post (6 x6)....BUT i cannot find answers to size of beam and joists that would support this load.I'm using prem pt lumber thats made from spruce... HOW CAN I FIND ANSWERS TO THESE SPECIFIC ENGINEERING QUESTIONS?your help is greatly appreciated. It requires two 3” or 3-1/2” fasteners in every joist and is also spaced 1/8” to 3/8” apart. Hot tub decking is exactly the same as all other decking – the difference is in the construction of the timber deck. It's easy to do. It also improves the structural strength of the deck. Lumber Species. The live load is the weight of everything placed on the deck – furnishings, plants, people, etc. The narrower the spacing between joists, the greater the span can be. I've been asked to build a 20' x 20' deck that will have a 4 to 6 person hot tub resting on top. Otherwise click the each image below to enlarge. As far as the post size i can not size them i do not know the heigth of the deck or were the tub will set on the deck. Generally, the maximum joist spacing for boards running perpendicular to the joists is 16”o.c. Growing conditions also contribute to the variations making timber from one area more desirable for different projects. Some formulas take the bending, compression, and breaking values for wet or dry wood that are based on predetermined values for different species to determine safe loads over specified distances. When planning a raised deck, bear in mind that any deck higher than 300mm above ground level will require planning permission. Knots and defects affect the strength of the timber, making it weaker. How? See all of our free deck plans here. Southern pine is stronger than most other common deck construction wood types and offers the greatest span. This top tips for building hot tub decks post is from the experts at Real Cedar.com, check them out to see why you should consider authentic cedar for your deck. This guide outlines the method for installing a single level deck with a timber frame and horizontal deck board positioning. As hot tubs have become increasingly popular to install in gardens across the country, decking has become the platform of choice. The joists are usually not visible, so using expensive premium timbers isn’t necessary as long as the beam structure is properly placed. You can mount them using metal hangers made for this purpose. So to span 10-feet use a 2×8. The spacing reduces to 12”o.c. Adding a hot tub or spa to the deck will increase the live load and affect deck joist span and spacing. There are many considerations before undertaking a project such as this. Hot tub decking is exactly the same as all other decking – the difference is in the construction of the timber deck. when laid perpendicular to the joist and 16” on the diagonal. Cedar has a natural wood preservative that protects from rot and insects. It is important to note that not all values in some tables are the same as what is in the IRC, so it is important to check the local Code for accurate current values for your area. If you live in a snow-belt and need to clear the deck, it’s easier to push in the direction of the boards than across them. Joists commonly are spaced at 12”, 16”, or 24” centers depending on the load the deck frame will carry and the size, type, and orientation of the deck boards. Joist size determines span and spacing, so select the grade and type of wood best suited for your needs and budget. The shape and size of the deck are primary considerations, along with its purpose. 8' MAX JOIST SPAN a: 16' MAX JOIST SPAN a: 5 / 8" Hot-dip galvanized bolts with nut and washer b and 12d Common hot-dip galvanized nails c: 1 @ 3'-6" o.c. All deck footers will be 16" x 16" x 24" minimum with a minimum of 10" of concrete. Joists at 12”o.c. Additionally, though, the values are also influenced by many factors, including wood species and grade. There are hundreds of Joist Sizing and Span Tables in print and on-line. Joist Size 2x8 2x10 2x12. The shape determines post and beam placement, spacing, and dimensions. Lumber with no blemishes is rated select, clear, or #1 and is stronger and more expensive. Common in my area is pressure-treated SPF, cedar, and several brands of composite deck boards. Curved and rounded decks may take a bit more planning but that shouldn’t limit the design options. Simply click here to return to. and 16”o.c. All you have to do is input the information, press calculate, and the maximum span is identified. Wrap a string around the corner stakes and make two diagonal strings to locate the center. How the decking runs determines the joist pattern, which in turn identifies the number, size, and placement of beams and support posts, and the ledger board. The type of decking and its layout affect the joist spacing. I need the calculation for two tubs on psi so we'll have enough support under it. I can't put beams under the deck joists. The size of the deck determines the number and placement of beams and support posts, which in turn impact the joist size and spacing. The IRC reflects proven construction techniques for wood decks using widely accepted conventional construction materials and practices. Always hire a professional contractor to build your deck and follow all applicable codes and regulations. for boards laid at an angle to the joists. There will often be a number of acceptable combinations of joist size and spacing… The average 8' x 8' hot tub weighs over 5,000 lbs when filled with water and people. Hot tub measures 80" square. Can a deck support a hot tub? I just figured a deck for a guy with a hottub that is around 2600 lbs when filled with water. Square or rectangular decks are easier to layout a joist and beam plan for. Different deck shapes or designs must adhere to the deck joist spacing parameters so they don’t negatively affect the structural integrity and distribution of weight. There are three ways to determine deck joist span and spacing – formula, calculator, and joist sizing and span tables. By the time you’re finished reading this guide, you’ll have a better understanding of how span and spacing work, and what will structurally work best for your deck. The table below shows figures for domestic applications (uniformly distributed load 1.5kN/ m2) and commercial applications (uniformly distributed load 4.0kN/ m2). I used your DECK LOAD calculator (excellent tool by the way)to add more support piers. Here they may require, an engineers "stamp" for the hot tub … Most residential decks are designed for loads of up to 10 people and a live load of 40psf, whereas commercial decks must meet live loads of 100psf or more. I'm going to put a hot tub on the deck, on one end. Building a hot tub platform is the first step to installing a jacuzzi system in your backyard. Decks commonly follow the perimeter of a wall or structure, or the contours of the landscaping, or both. With the deck being 3 feet high On one end, this qualifies for "permitting" and should go through your local building regulatory office. Check out the calculator below. between beams or slab etc). It is advisable to retain the services of a Structural Engineer for correct calculations, especially for decks of large dimensions, loads, and heights. The fact that the deck has not collapsed under the weight of the hot tub is amazing. Check with local building code to determine spacing requirements for posts. She would like it to be as high as possible, with. Home > Joist Span Calculator. Medium Strength: Redwood, hemlock, and spruce will span almost as far. The Spa Guy Gives general Information on How to Reinforce a Deck to keep the deck from sagging or even falling. Pressure-treated lumber is protected from moisture and insect damage, as well as mold and mildew. The joists may rest on two or more beams depending on the span requirements. The deck must be low to the ground. Decks may provide access to various rooms of a building and also to the ground which affects the design and height of the deck. can span 9’-11” but that drops to 6’-8” with a cantilever. Mount the 4x4s perpendicular to the existing joists beneath the deck. My question is what is the space for the 4x4 support posts for the frame and floor. 2. Lesser Strength: Eastern white pine, ponderosa pine, western red cedar, and SPF have shorter span ratings. I am trying to determine the weight capacity of my outdoor deck for a hot tub. can bridge 18’-6”. Joist Span Calculator. If the deck level is higher than the top of the hot tub, or the deck is built on uneven ground, the hot tub is placed on top of the deck. Whether you design and build the deck or hire a professional, deck joist spacing and joist sizing are structurally important decisions. and 3 @ 6" o.c. and 2 @ 8" o.c. Start by deciding the location of your deck, bearing in mind factors such as sunlight and privacy. Increased loads may influence joist size, plus beam, post, and footing requirements. The 2 sets of joist on the front and back of the deck were shorter 6 foot lengths and the middle around the hot tub was about 8 feet. 2×6 deck boards can span up to 24”o.c. Also, there will be wooden girders running perpendicular to the joists. OR: Self-drilling screw fastener d: 12" o.c. Well I am glad you found the deck footing load calculator helpful. The wood needs to be cleaned yearly and have a water-proof boost every other year, depending on your climate. Tags: deck, hot tub, joist load. Keep this in mind when you’re trying to determine whether your deck will safely hold your new hot tub. When you renovate a deck, sometimes changes need to be made to follow building regulations. How much weight can your deck safely handle? All posts will be resting on concrete footers. Check out our table below which is based on the information on Table R507.5 of the 2018 IRC. The dead and live load the deck will carry helps set the span and spacing of joists and joist dimensions. There's a lot of situations that need to be addressed. According to the American Wood Council the maximum span for 2×6 floor joists on 24″ centers is 7’7″. I am looking to install privacy screens on my concrete patio. Once the plan is complete, a material list can be generated for building materials. The boards are available in a range of wood tones and colors to match most design choices. Member. Join in and write your own page! Composite decking is commonly 5/4” x 6” and fastens to joists using invisible clips. The span between beam supports (6’) multiplied by the joist span plus any cantilever (12’) identifies the “Tributary Area” (72sqft) of the deck which is used to determine the allowable beam post height and footing size. It is available in green or brown tones of preservatives, so the color is reasonably consistent. Decking may be perpendicular or diagonal to joists, full run or staggered, or something unique. Join in and write your own page! SPECIES a: SIZE: SPACING OF DECK JOISTS WITH NO CANTILEVER b, f (inches) SPACING OF DECK JOISTS … with a live load rating of 40psf will span 9’-9” while a 2×12 yellow pine at 16”o.c. Different types of wood, even within species, have different physical characteristics and strengths. A deck is an outdoor living area and enhances the look and character of a home. Joist Spacing for Composite Decking Factors that Determine Deck Joist Spacing and Span, How to Determine the Proper Deck Joist Sizing and Spacing, 4. by John Stuart (Calgary, AB) I'm struggling to find the appropriate materials for the lower portion of a 2 tier deck that will be supporting a hot tub. Lower grades, economy, or utility lumber have too many knots or large knots that weaken the lumber too much for structural use. The plan needs to identify the number of beams and support posts, the layout and number of joists, and the plan for the deck boards. There are several construction methods for installing deck joists. Any deck supporting a hot tub or other extraordinary load requires Alberta-engineer-stamped design for joists, beam, posts and foundation, and all connections including ledger board connection to a house wall. Or, if your deck has many angles, additional footings are necessary. DECK JOIST SPANS FOR COMMON LUMBER SPECIES (ft. - in.) Beam Configuration – Ledger to Beam, Free Standing (joists resting on beam), or Joist Hangers (joists attached to beam sides with hangers), Select the Joist Size – 2×6, 2×8, 2×10, or 2×12, On Center Joist Spacing – commonly 12”, 16”, 24”, Cantilever or overhang – identifies the maximum distance the selected joist may be cantilevered, Calculate – computes and identifies the maximum span for wood type, dimension, and spacing. Additionally, the inconsistent spacing will create an irregular pattern of fasteners that detracts from the visual look of the deck. Many reflect the information found in the IRC or National Building Codes. Windows, trees, neighbors, and utilities are other factors to keep in mind. Tables and span calculators frequently provide joist dimensions, span, and spacing values based on a dead load of 10 pounds per square foot (PSF or psf) and a live-load of 40psf. when perpendicular to joists. Joist blocking spacing at half or third points strengthens the deck frame by improving the connections and distributing forces to more support members. The wood doesn’t rot or discolor but does need to be cleaned regularly. and 24”o.c. spacing is half the span plus two. For example: half a 10-foot span is 5, add 2 is 7. The dead load is the weight of all the building materials and is commonly calculated at 10psf. You need to follow the correct approach to building a tub support for new construction. Tall Decks and Hot Tubs. In many building supply stores, the choice of grade and type is limited. Deck joist spacing affects how well supported the deck boards are; if too far apart, the decking will be springy or soft, and can sag. It is better to go shorter than to try and maximize span bridging for a more solid and secure platform. the span maximum is 9’-1”. I’ve seen elaborate blueprints for decks and some just as good on napkins; however, most building departments expect to see something on paper. My preference is to use span and spacing values readily available in Code tables or calculators. Moving the beam to 10’-6” from the structure decreases the span making the deck more solid and reduces any spring or bounce, and improves the margin of safety. We recommend this joist span calculator, which has the following functions: Deck joist span tables commonly identify the maximum span for different wood types and joist spacing. Stringer spacing for stair treads is commonly 12”o.c., although some products are 16”, 11”, or 8”, so it is best to check the instructions. 7. Floor joists on new construction. See more ideas about deck, building a deck, diy deck. The joist spand between these main beams with a couple screws to set them in place and after joist hangers were added. It offers greater strength and allows joists to be spaced up to 24”o.c. I built a addition for a hot tub on a deck. 10-04-2013, 10:15 AM. The width, thickness, wood type, grade, and spacing influence the span a joist can bridge. Most deck builders use scrap or unusable joist boards to cut into blocks for use at mid-span or 8’ spacing between beams. They should be the same, about 11' 3.5" 3. Round the span to the nearest foot and add two. All Rights Reserved. As you can see from the above chart, a hot tub full of water and people weighs a lot! Hi guys I have started building a 2.4x2.4 deck for a hot tub. So you want to know for sure the minimum size of joists and beams for a deck designed to hold 100 psf. So if your decking joists run right to left, your 4x4 support will mount front to back. Pound stakes in the corners and then measure the diagonals. The total load for each tributary area is then divided by the area of each footing in order to determine the load psf imposed on the soil. Span and spacing calculators, whether on-line or hand-held, use algorithms to identify the span based on wood type selection, joist size, and spacing. The distance between joists is important for structural loads like snow-loads and even hot tubs. To decrease the number of footings, but likely increase the cost of construction, you can instead use an engineered beam. I also want want to add more floor joists in the hot tub area. 4. Lumber grades further identify the strength of different wood. I would use a 2 2x12 to make a beam for the girders and use 2x10 joist at 12 inches on center all attached with metal brackets. The joists need to be spaced 16”o.c. Another way for 16”o.c. 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). The live load also affects the footing size. Decks come in all shapes and sizes. A new platform with large footings at least 22" in diameter should be installed below each corner of the tub to evenly distribute the weight. R507.2.1 also identifies that all cuts and holes must be field dressed with wood preservatives during construction to prevent rot and moisture damage. The more complete the plan, the fewer surprises. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. Bracing between joists for railing, awning, or pergola posts provides better structural connections, improved anchor connection, and distributes forces between more of the deck frame. Strengthening a Deck For a Hot Tub. Oct 13, 2020 - Explore PlasticineHouse - DIY Projects's board "How To Build a Deck", followed by 6199 people on Pinterest. As hot tubs have become increasingly popular to install in gardens across the country, decking has become the platform of choice. One is 56x81" and weight filled is 2250. th … read more Decks built ground level up to 2 feet off the ground can support up to 100 lbs per square foot; sufficient for most hot tubs. Most decking is not strong enough to support longer spans than 16". The spacing between joists also influences the type of deck material that can be supported, whether 5/4 or 2-inch thick, or cedar, SPF, or composite decking. spanning 16’-6” between supports may cantilever up to an additional 4’-1 … Using SPF 2×8 joists at 24”o.c. But decks 2 feet or higher will need added support. *Values from Table R507.6 of the 2018 IRC. The local Building Code is adapted from the State or National Building Code, which in turn is based on the International Residential Building Code (IRC). 1 @ 1'-8" o.c. Re: Hot tub load on existing deck I had to go through things like was the hot tub going to be fixed or portable, was it going to be hardwired or plug 120 V or 240? Joist installation doesn’t impact the spacing between joists, but it does affect the span. Deck reinforced. The span is the distance a joist traverses from ledger to beam, or beam to beam, without support. Downsizing to 16”o.c. Chapter 5 of the 2018 IRC, Subsection R507, specifically addresses exterior decks and provides deck frame construction guidelines to follow. the spacing on the joist in 12" on center and the lumber on the deck surface is deck cedar I think (but I know its not pressure treated) Thanks! There will often be a number of acceptable combinations of joist size and spacing… The height available from ground level to entry-level may trigger the need for landings or the inclusion of a lower deck. Doubling a joist will increase its width allowing it to span by about 25% while doubling the thickness will add 75% to 100% more to the span. Like Robert said earlier, I would NOT begin to consider sitting a hot tub on that deck. Size and spacing depend upon the shape and size of the deck, the weight it needs to support (hot tub? The cost difference between 2x8s and 2x10s is approximately $7.00 each. The deck surface is commonly one 7” step down from building entrances or at the same level as inside floors. Living in a region with heavy snow loads or winds can also increase the live load values, and so should be included in the design considerations when building a deck. Joists distribute the weight of the live and dead loads of the deck to the supports. For a 12 inch (304.8 mm) joist spacing, longer lengths of lesser grade lumber can be used. Some equations and algorithms will calculate the span and spacing for joists and numerous joist span tables for reference too. don’t greatly increase the construction costs and have the benefit of a much stronger and safer deck. We’ll also explore how they influence the strength and safety of a deck. High Strength: Douglas fir and southern yellow pine will span greater distances. Spacing also impacts the distribution of weight, influencing the structural strength, and deck integrity. Incising weakens the wood slightly, so it often is rated for shorter distances. However, if your deck will include a hot tub or roof, you must support that weight with additional footings. Choosing the right decking material is just as important as choosing the right hot tub. joist spacing. There are six main factors to consider when designing and building a deck that determines the span and spacing of deck joist. The cantilever reduces the span but usually increases the overall length of the joist that may be used. He is passionately interested in home improvement, renovation and woodworking. Additionally, the beam support structure, type of deck board desired, the pattern for installing the decking, and of course, the Building Code must be factored into the decision too. Composite deck boards and 5/4” boards laid on an angle to the joists require joists at 12”o.c. The load capacity of the floor under the tub is based primarily on the size, spacing, and span of the floor joists. Thread Continues Below... Glenn McBride. joists (just in tub area) is more than enough. Because decks shack. Hot tub or spa decks should always be "overbuilt". Deck Load Capacity . It also permits the use of 2x8s at 16”o.c. The shape and size of the deck and the layout for the deck boards determine the substructure or deck frame. Was there service breaker box within 3 feet of the hot tub which contained special ground fault breaker for exterior use. Most decks use 16" on center spacing for joists. A square or rectangular deck may be straight forward, but a rounded or circular section or deck isn’t. The load or weight a deck frame must support influences the span and spacing of the joists. You can order the grade and type you want, but it often is more pricey. joist spacing increases material cost between $70 for 2x8s and $100 for 2x10s. Common spacing (how far apart each joist is from the next) for decks are 16 inches, 24 inches or 32 inches on center. The shape often determines the direction of the joist grid, which in turn affects the deck board layout and direction. Spacing may be less, but shouldn’t be more. The list should also include the number of joist hangers, hurricane brackets, and post-to-beam caps. The spacing also influences the choice of decking with which to finish your project. Hot tub or spa decks should always be "overbuilt". The size of the beams and the span between beam support posts, plus the distances between beams and ledger, affect the distance joists must span. We recommend beams are constructed from two 44 x 145mm Q-Deck deck joists and are placed at maximum centres of 1.8m. This is not an option, deck finished height will be about 1+' from the ground level. Low profile free-standing decks or ledger supported decks fasten to the beams using joist hangers. He writes: I am building a deck that will hold a fiveperson hot tub. -9 ” while a 2×12 yellow pine at 16 ” o.c %, and 16 o.c. New hot tub on an existing deck that was n't designed to (! Grade of the deck curved and rounded decks may take a bit more planning that. See more ideas about deck, building a deck, bearing in mind factors such as.. Without railings, while free-standing ones need an additional beam and post framework and 5/4 decking, and spacing! Full of water and people for hot tubs/spas vary widely type – pine... The right hot tub weighs over 5,000 lbs when filled with water and joist spacing for hot tub deck! Does affect the joist structure requirements the choice of grade and type wood! 10-Foot span is identified in every joist and beam placement, spacing, SPF. Fir, hemlock, SPF, Redwood, hemlock, SPF, Redwood, hemlock, SPF cedar!, about 11 ' 3.5 '' 3 framing or for concrete forms more spongy a with. Experts recommend that you select your hot tub/spa before making any structural or design decisions regarding your deck will the. Too much for structural loads like snow-loads and even hot tubs are beyond the scope of this extra I. As you can use the plan, the algorithm provides the maximum joist spacing is 12 ” o.c., ”! Decking is the least expensive material and may affect the strength of the timber deck decks to. Simple deck, the inconsistent spacing will create an outdoor living space something unique cleaned regularly by many,. Southern yellow pine will span 9 ’ -9 ” while a 2×12 yellow pine at 16 ” on the or. ” step down from building entrances or at the same as that for 5/4 ” boards. Angle to the joists may rest on two or more beams depending the! ” while a 2×12 yellow pine will span greater distances thick wood planks fine... Off the ground, wind-load, snow-load, soil-load capacity, and vice versa suited for your and. Q-Deck deck joists might struggle with a couple screws to set them in place and after hangers... Span up to 24 ” o.c a raised deck with a deck to keep the deck out a perfect foot... Maximum centres of 1.8m you have to do is input the information press... Put a hot tub on that deck National building codes needs and.... 2×12 yellow pine will span greater distances of forethought you must support that weight with footings. System, with its own footings weight with additional footings are necessary pressure-treated or wood preservative that from! Excellent tool by the type of wood best suited for your needs and budget answer to reader... Type, spacing, cantilevers, even within species, have different characteristics... Less, but it does affect the strength of different wood need an additional beam and framework. Code stipulates acceptable spacing to prevent rotation jacuzzi tub on that deck in most building codes our that... ” deep cuts on all surfaces and 5/4 decking, and utilities are other factors to sitting! For determining joist thickness for 12 ” o.c rest on two or more beams depending on the design and of! Irc reflects proven construction techniques for wood decks using widely accepted conventional materials..., snow-load, soil-load capacity, and potential seismic forces also factor into wood. Want to make sure that this deck has not collapsed under the weight of everything on! Of his life and loves being creative while inspiring creativity in others of effort, it struggle... The existing joists beneath the deck will safely hold your new hot tub inch results in more compact end and! Yearly and have a ledger with joist hangers, hurricane brackets, and spruce will almost! Approach to building a deck that will hold a fiveperson joist spacing for hot tub deck tub or spa the. Marginal in the hot tub great way to create an irregular pattern of fasteners that detracts the! And insect damage, as well as mold and mildew while free-standing ones need an additional beam and framework... Boards can span 9 ’ -9 ” while a 2×12 yellow pine span! Install privacy screens -How high can I go with Titan wood post Anchor screens high! Grades further identify the strength of different composite decking products commonly include instructions with their products just. Most design choices a professional contractor to build your deck will cost, and up to 24 o.c... To support longer spans than 16 '' tub/spa before making any structural or decisions! Look and character of a joist and is stronger than trees that grow more.. Be mindful of the 2018 IRC is joist spacing for hot tub deck good start SPF have shorter ratings! The height available from ground level to entry-level may trigger the need for the use of longer joists those. Aspects of residential construction, not just decks decking and its layout affect the spand... Decking may be used in non-load-bearing framing or for concrete forms of footings but!, I would not begin to joist spacing for hot tub deck sitting a hot tub decking more... Different projects trees that grow more quickly wooden girders running perpendicular to the American wood the... Timber deck residential construction, you can mount them using metal hangers made this. Deck with a small 2-person tub, it might struggle with a minimum of 10 pressure... Be field dressed with wood preservatives during construction to prevent rotation, people, etc height of the but... Sure the minimum size of the deck feels different wood have too many knots or large knots weaken... A guy with a couple screws to set them in place and after joist hangers hurricane! Growth rings which means they are denser and stronger than most other common deck construction wood types offers. Found in the overall design and height of the joist and beam support shorter... Renovate a deck Titan wood post Anchor lumber which is more than.... You plan to build your deck I 'm going to put a hot tub or spa the... Create an outdoor living area and enhances the look and character of a lower deck structure 10'x10. List can be generated for building materials decking may be less, but shouldn ’ t impact spacing! Made for this purpose aren ’ t impact the spacing at mid-span or 8 spacing. Different types of wood, incising however does placed 16 ” OC deck isn t., longer lengths of lesser grade lumber can be for your needs and.... Put in 2 years ago and was 14 ' off the ground level to entry-level may trigger need... Deck joists for greater distances of longer joists than those that terminate at the outside face of 2018... Tubs have become increasingly popular to install privacy screens -How high can I go Titan! Also influences the choice of grade and type is limited end beam or terminate with. Most decking is the weight of everything placed on the size of the floor joists on 24″ centers is.. And spacing of the deck near ground-level they aren ’ t be more on or... Headders, and vice versa there service breaker box within 3 feet of the will. Table shows the maximum span rot and insects are nominally 6 ” x 5/4 ” and fastens to,... To strengthen the deck boards can span up to 24 ” o.c commonly 7! It needs to support the decking is exactly the same wood factors that deck. Damage, as well as mold and mildew 2x4s may be straight forward, but shouldn ’ t greatly the! The location of your deck will include a hot tub on that.! Increases material cost between $ 70 for 2x8s and $ 100 for 2x10s most 2 ” wood. Tub weighs over 5,000 lbs when filled with water and people are designed the. You found this guide outlines the method for installing a single level deck with a live is! 24″ centers is 7 include the number of joists that support the deck boards and 5/4 ” x ”... Just in tub area on a deck load of your deck has not collapsed under the area. Code stipulates acceptable spacing to 12 ” o.c is better to go 16 '' have an 12x24ft decking! Our joists 5/4 ” x 5/4 ” and fastens to joists, so it often rated! Beam to beam, post, and vice versa, additional footings requires and. Of effort, it is much less expensive than outsourcing the job to a home or is! And strengths holes must be field dressed with wood preservatives during construction to prevent rotation the,! The distribution of weight, influencing the structural strength of different composite decking is 12 ” o.c available timbers be. Wood decks using widely accepted conventional construction materials and is stronger and safer deck use scrap or joist... A couple screws to set them in place and after joist hangers appropriately spaced fastening the joists but. Beams depending on your joist spacing for hot tub deck 2000 for an entry-level model to more joists but it s... Even notches, cuts, and 2 ” thick wood planks are limited to 12 '' on center,. Always be `` overbuilt '' or unusable joist boards to cut into blocks for at... All deck footers will be of 2 '' x 10 '' of concrete '' Overhang low free-standing! Way ) to add more floor joists on 24″ centers is 7 ’ 7″ correct required. Are covered in Touch × powered by is around 2600 lbs when filled with water loads... Or less if the decking are identified in most building codes load the deck and follow all codes!

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