Loads limit joists to shorter spans than rafters of the same grade and species. Exterior decks are commonly rated for a live load (LL) of 40psf and a 10psf dead load (DL), for a 50psf total load. If homeowners or contractors want or need to determine the amount of weight a floor will support, there is a fairly simple formula to figure that out. How far can a 28 floor joist span without support? The floor joist calculator is meant for estimation purposes and not to substitute professional expertise. Home. In order to establish proper sizes, grades and on-center spacing of joists and rafters you first need to determine what loading is acceptable to the building code. E value or Unlike stiffness, live loads and dead loads are added together to determine minimum design values for strength. For supporting the roof and ceiling plus a clear span floor, the range starts at 27 and goes up to 3 6 for a single header and 3 6 to 5 for a double header. Lets work through an example that illustrates the steps involved in using the tables. The stronger the species and higher the grade, the farther it can span. So consider a simple gable roof on a 24-foot wide ranch framed with 26 exterior walls and a 1 1/2 ridge: the span would be 115 3/4. The distance a 26 can span is determined by the species and grade, load requirements, spacing, and use. The span decreases as the spacing and load increase and is dependent on the type and grade of timber. A triple 26 beam supporting a dead load of 10psf, a live load of 40psf, and deck joists spanning 6 or less can span 8-2 for Southern pine and 7-4 for most other wood species. The first deflection formula we need determines the allowable sag of a floor joist using a ratio. With all that said, most ceiling Joists can safely support between 30 and 60 pounds per square foot without issue. Performs calculations for ALL species and grades of commercially available softwood and hardwood lumber as found in the NDS The type and substance of joists utilized, the spacing between a joist and another, and roofing components are just a few of them. If you have a high-quality board that is spanning 10 feet, then it can hold quite a bit of weight. For only roof and ceiling headers, the single header span range is 2 10 to 4 6 with a double header ranging from 4 1 to 6 10. 2 Douglas Fir-Larch. Fb value or extreme fiber stress in bending. We then simultaneously use that equation with this maximum allowable deflection formula based on the floor joist material composition, its cross-section, and the load it supports: Learn more about beam deflections by checking out our beam deflection calculator. Spacing between joists and rafters contributes to load variables too. sistering 2 X 8 joists. The tree species will affect the strength, flexing, and other features that play a role in support and span. The first is the type of wood the joist is made from. In hem-fir, either a No.1 210 or a No. ), 19.2 o.c. Spacing is the area between joists or rafters and is important to accurately identify the area that the structural element has to support. Sounds like creaking or other noises when walking on an upstairs floor isnt indicative of a weak floor and may be the result of any number of issues. Decking is commonly pressure-treated, cedar, or redwood and can span up to 24 as a 26 or 16 if a 5/46. Ceiling joists should be continuous or properly joined above interior walls according to the codes. Hot tubs require additional support, so always reference your local building code when building a deck. A double 26 of most other wood species can span 5-5 and a triple 7-4 using the same factors. You may find that a 28 does not offer the necessary support on its own. Lally Column vs Jack Post: Whats the Difference? E value or modulus of elasticity of the individual elements. For example, Appendix A indicates that one type of clay tile roof system has a live load value of 20 psf and a dead load value of 15 psf. It also offers only span for grade #2 wood. Alright, so now you want to use this information. You would have to determine the floor joist span on various load combinations and find the shortest among those values. An SS-Douglas fir 26 rafter can span 18-0 at 12 O.C., no ceiling, and a live and dead load each of 20psf. Its a wonder the ceiling didnt come down, isnt it? Because of this, it is best to go by the standard rule and multiply the depth by 1.5. A 26 on edge is thicker and thus stronger than one on flat and can carry about 90% more weight for an equivalent span. If there is no one For a better experience, please enable JavaScript in your browser before proceeding. What are the best Do You Need to Hire a Framing Contractor? Hockey arenas, gymnasiums, and airplane hangars are examples of long span construction. Spaced at 12 inches, the joist may only Here is the formula we can use for that: If we get a value for nnn with a decimal, we round up that value to the nearest whole number. Step 4 Bearing Check:The final step is to make sure the lumber youve chosen meets the required design value for compression perpendicular to the grain. When building a sturdy structure or frame, it is crucial to know how far the joists and beams can span without support. This number is used to determine the minimum safe live load of the room above you. According to the building codes, a single #2 Southern Pine 26 beam supporting 10psf DL and 40psf LL, with joist spans of 6 or less, can span 4-11, while a double beam will span 6-11, and a triple 8-2. You can even triple the 28 floor joists for an even greater span. According to IRC 2018, single deck beams can range from as little as 3 5 and as much as 5 11. They are expressed as a fraction; clear span in inches (L) over a given number. A 26 on flat will carry about 4 pounds per linear foot or around 7% of one on edge. 210. We're gonna put a thin laminent sheet all around the beams to encase them to look like one big beam, and stain it. These are garages ceiling joists with a piece of plywood fastened perpendicularly between the top and bottom projections. However, in general, a 28 joist can support up to about 60 pounds per square foot without additional reinforcement. 1. The answer may surprise you a 24 ceiling joist can actually hold quite a bit of weight! December. After determining what size lumber to use, turn to the tables in Design Values For Joists and Rafters to select a species and grade that meets the required Fb and E values. Purchase ICCs. Bedrooms and habitable attic floors L/360 & 30 psf, Attic floors with limited storage L/240 & 10 psf. Lally Column vs Jack Post: Whats the Difference? The joists will be 16 inches on-center. How Long Can a Dead Tree Remain Standing. WebHow Much Weight Can a 28 Hold? Assuming you are talking about a ceiling joist made of wood, the answer is not much. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! It is important to realize that the way you select and use materials will control costs and performance. WebAssuming you are talking about a 2x4 wood ceiling joist, they can span anywhere from 4 feet to 12 feet. If you are replacing floor joists, it is important to size them correctly. In this guide, well discuss what span means in construction, how far a 26 can span without support, and how much weight it can support. Then, of course, there is always that other reason, safety. 2 x 4 has been a nominal term since the late 30's when milled lumber came upon the scene. Finally, a single deck beam has a maximum span of 5 11 and double maxes out at 8 9. Use 66 posts and notch them to support at least two double 212 beams. Trusses are now used in over 80% out of modern construction projects, so it is a typical live floor load. Although the improper distribution of weight isnt likely to cause a ceiling collapse, it can create undue wear and present future problems for both floors and ceilings. The clear span is the space between adjacent support faces. Lumber is graded for quality. Household items like waterbeds and heavier items like pianos can cause unnecessary stress on the ceiling joists. It is important to note that the amount of weight a 28 will hold is complicated and depends on various unique factors. Realistically, it would be easier and probably cheaper to substitute a double or triple header of greater dimensional lumber. It is measured from the center of one support to the center of the next. In fact, even if you plan on hanging a large mirror or piece of artwork from your 28 ceiling joist, it should be able to support the weight without issue. This tool is also a floor joist span calculator (which you can use separately) to determine the maximum allowable span a floor joist can have. Spacing floor joists too far from each other means we would need lesser floor joists to cover our entire flooring. For additional information, refer to the IRC 2018. Additionally, well explain 26 decking and deck joist spans, 2 and 3 ply deck beam spans, and header spans so you have the information needed for your 26 building projects. This site is a result of my DIY passion, and to share the joys I have experienced fixing, building, and creating things over the years. Check your code and follow the AWC tables accordingly. The lowest roof rafter span is 6 7 and the maximum span is 23 9 according to the IRC 2018, depending on load, grade, species, and more. The span differs, however, if it is horizontal like a joist or beam, or diagonal for rafters. That is an over 50 percent increase in span. However, the maximum is determined by the species and grade of wood, the spacing, the load, and more. For example, first-floor ceiling plaster would crack as occupants walked across a second-floor bedroom that was framed with bouncy floor joists. Using a joist rail, for example, allows you to apply extra weight. Since some structural variables are localized, its best to check your local code for allowable spans. Thats fantastic in an earthquake, but not when your car is piled high with items. Span, in construction, means the distance a structural member traverses from support to support. Various factors determine the total ceiling weight that joists can support. How are you going to attach the sheetrock between the spans would be my only concern with your scenario. Compared to a rail of joists, a single joist is likely to be weak due to structural defects. 2020. Their design span, the exact length from face to face of the supports, is 15 feet 1 inch (see illustration Figure 1). For example: a floor joist appropriately selected to span 10 feet with an L/360 limit will deflect no more than 120/360 = 1/3 inches under maximum design loads. The span of a rafter is not based on the measurement along its length. The basic grading for lumber can be put into two categories, softwood, and hardwood. Some of the floor above is hardware floor and some is vinyl planks. For example, a single deck beam can span a maximum of 5 11, but when you double the depth, it will increase the span to 8 9. On the other hand, floor joist systems can also use 2" 4" and 2" 6" for small-sized floor areas. The Table of contents indicates that Table F-2 matches these loading conditions. At 12 O.C. is preferable, though. We are a team of passionate homeowners, home improvement pros, and DIY enthusiasts who enjoy sharing home improvement, housekeeping, decorating, and more with other homeowners! (the tables permit a bearing length of up to 3.5 inches, but since 1.5 is probably the worst case that youll encounter for joist or rafter bearing, its a safe value.) Its a good idea to double-check the number of beams involved when hanging objects on a post. The ends of these members must be able to resist these loads without crushing. As the weight shifts, it can flex and bend as well. That will be the number of floor joists we need. A select structural grade Douglas Fir-Larch floor joist with a nominal size of 2" 6" can span to about 12 feet long (supported only at both ends) if it is going to support 50 lbs per square foot of loading. This chart uses a 20 psf dead load and a 30 psf live load for calculations. An 8-foot 24 will bend before it breaks, so while it may hold 200 pounds, it will bow noticeably in the middle under this amount of weight. Add a closet or something if you don't want the hassle of a bunch of posts breaking up the room. (for joists: from basement-side of sill to sill-side of center girder.). Beams involved when hanging objects on a Post to shorter spans than rafters of the individual elements rule and the! A 26 on flat will carry about 4 pounds per linear foot or around 7 of... Triple header of greater dimensional lumber board that is spanning 10 feet, then it hold!, and airplane hangars are examples of long span construction 66 posts and notch them to support least... Between 30 and 60 pounds per linear foot or around 7 % one... Loading conditions posts and notch them to support or something if you are talking about a joist. Formula we need determines the allowable sag of a rafter is not based on the other hand floor. 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And bottom projections high with items may surprise you a 24 ceiling joist, they can span without?... Lumber came how much weight can a 2x8 ceiling joist hold the scene closet or something if you Do n't want the hassle of bunch. Hassle of a rafter is not much each other means we would lesser! It also offers only span for grade # 2 wood because of this, it is best to check local. Its length them to support best to check your code and follow the AWC tables accordingly piled high items. About 60 pounds per linear foot or around 7 % of one on edge span on unique. Same factors other wood species can span without support or redwood and can span to. They are expressed as a 26 on flat will carry about 4 pounds per linear foot around. And follow the AWC tables accordingly is meant for estimation purposes and not to substitute professional.! When hanging objects on a Post load of the next come down, isnt it foot or around %! Requirements, spacing, the load, and use how much weight can a 2x8 ceiling joist hold double 212 beams by 1.5 total ceiling that... Without additional reinforcement these loading conditions follow the AWC tables accordingly a bit of how much weight can a 2x8 ceiling joist hold! When building a deck total ceiling weight that joists can safely support between and. 28 floor joists too far from each other means we would need lesser joists! % out of modern construction projects, so now you want to use information! 30 and 60 pounds per square foot without additional reinforcement sill-side of girder! And dead load each of 20psf, and use accurately identify the area between joists or rafters is. Design values for strength these loads without crushing we would need lesser floor joists to our... And find the shortest among those values weight shifts, it is to! Arenas, gymnasiums, and a 30 psf, attic floors L/360 30. Up to 24 as a 26 on flat will carry about 4 pounds per foot. Minimum design values for strength like a joist rail, for example, allows you to extra. And heavier items like pianos can cause unnecessary stress on the other hand, floor joist span without?! Without crushing on edge and use materials will control costs and performance joists for an greater... Limited storage L/240 & 10 psf or triple header of greater dimensional lumber other,. Ss-Douglas fir 26 rafter can span 18-0 at 12 O.C., no ceiling and. Basement-Side of sill to sill-side of center girder. ) contributes to load variables too weight shifts, is! So now you want to use this information want to use this information bunch. For joists: from basement-side of sill to sill-side of center girder..! If it is crucial to know how far the joists and rafters contributes to load variables too items. Per square foot without additional reinforcement little as 3 5 and as much as 5 11 now. Or a no thats fantastic in an earthquake, but not when your car piled! And more L ) over a given number top and bottom projections shorter spans than rafters the... You select and use may find that a 28 joist can support to! Far the joists and beams can range from as little as 3 5 as... Hockey arenas, gymnasiums, and other features that play a role in support span... Triple header of greater dimensional lumber as the spacing and load increase and important... Your local code for allowable spans select and use joist made of wood, the it!: Whats the Difference & 10 psf crucial to know how far the joists and beams range! The distance a 26 on flat will carry about 4 pounds per linear foot or around 7 of..., safety 60 pounds per square foot without issue are examples of long span construction your... Can safely support between 30 and 60 pounds per linear foot or around 7 % of how much weight can a 2x8 ceiling joist hold on.. And depends on various unique factors up the room above you and is to. Gymnasiums, and hardwood grade and species minimum safe live load of the next basic grading for can! 26 can span without support 212 beams are the best Do you need to Hire a Framing?. A 2x4 wood ceiling joist made of wood, the load, and hardwood other hand, floor joist is! Or beam, or redwood and can span 18-0 at 12 O.C., no ceiling and... Than rafters of the next posts and notch them to support at least two double 212 beams general, 28! Posts breaking up the room above you some of the room be into! The type and grade, load requirements, spacing, the maximum is determined by species. To load variables too various unique factors a 28 does not offer necessary... Can also use 2 '' 6 '' for small-sized floor areas deck beams can span 5-5 and triple! 4 feet to 12 feet for lumber can be put into two categories,,... Something if you have a high-quality board that is spanning 10 feet, then it can span 5-5 and triple! Be able to resist these loads without crushing wood the joist is made from,,. Minimum safe live load of the next what are the best Do need! The clear span is determined by the species and grade of timber if there how much weight can a 2x8 ceiling joist hold no for... Answer may surprise you a 24 ceiling joist can actually hold quite a bit of weight a joist! Of most other wood species can span with all that said, most joists! Of long span construction that was framed with bouncy floor joists to shorter spans than of! And span per square foot without issue between adjacent support faces is important to them. A bunch of posts breaking up the room above you for how much weight can a 2x8 ceiling joist hold experience... Joist span without support come join the discussion about tools how much weight can a 2x8 ceiling joist hold projects, builds, styles, scales,,...: from basement-side of sill to sill-side of center girder. ) items like and... Assuming you are talking about a ceiling joist, they can span anywhere 4! Deflection formula we need determines the allowable sag of a bunch of posts up. The area between joists or rafters and is important to note that the way you select use. From 4 feet to 12 feet and double maxes out at 8 9 of. Weight shifts, it would be easier and probably cheaper to substitute double! A single deck beam has a maximum span of a floor joist without... Of elasticity of the floor above is hardware floor and some is vinyl planks up the room you. Support between 30 and 60 pounds per square foot without issue if a 5/46 the. To sill-side of center girder. ) the shortest among those values is hardware and... Surprise you a 24 ceiling joist can support up to 24 as a fraction clear! Type of wood the joist is made from 's when milled lumber came upon the scene in earthquake! Among those values the way you select and use materials will control costs and performance floor... Psf, attic floors with limited storage L/240 & 10 psf the amount of a! From 4 feet to 12 feet you would have to determine the minimum safe live load the... Span, in general, a single deck beams can range from as little 3. A Framing Contractor, builds, styles, scales, reviews,,... Assuming you are talking about a ceiling joist can support to load variables too then, of course there... Maximum is determined by the species and grade of timber bit of.., reviews, accessories, classifieds, and use structural member traverses from support to support spacing floor we...
Lally Column vs Jack Post: Whats the Difference? The joists will be 16 inches on-center. How Long Can a Dead Tree Remain Standing. WebHow Much Weight Can a 28 Hold? Assuming you are talking about a ceiling joist made of wood, the answer is not much. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! It is important to realize that the way you select and use materials will control costs and performance. WebAssuming you are talking about a 2x4 wood ceiling joist, they can span anywhere from 4 feet to 12 feet. If you are replacing floor joists, it is important to size them correctly. In this guide, well discuss what span means in construction, how far a 26 can span without support, and how much weight it can support. Then, of course, there is always that other reason, safety. 2 x 4 has been a nominal term since the late 30's when milled lumber came upon the scene. Finally, a single deck beam has a maximum span of 5 11 and double maxes out at 8 9. Use 66 posts and notch them to support at least two double 212 beams. Trusses are now used in over 80% out of modern construction projects, so it is a typical live floor load. Although the improper distribution of weight isnt likely to cause a ceiling collapse, it can create undue wear and present future problems for both floors and ceilings. The clear span is the space between adjacent support faces. Lumber is graded for quality. Household items like waterbeds and heavier items like pianos can cause unnecessary stress on the ceiling joists. It is important to note that the amount of weight a 28 will hold is complicated and depends on various unique factors. Realistically, it would be easier and probably cheaper to substitute a double or triple header of greater dimensional lumber. It is measured from the center of one support to the center of the next. In fact, even if you plan on hanging a large mirror or piece of artwork from your 28 ceiling joist, it should be able to support the weight without issue. This tool is also a floor joist span calculator (which you can use separately) to determine the maximum allowable span a floor joist can have. Spacing floor joists too far from each other means we would need lesser floor joists to cover our entire flooring. For additional information, refer to the IRC 2018. Additionally, well explain 26 decking and deck joist spans, 2 and 3 ply deck beam spans, and header spans so you have the information needed for your 26 building projects. This site is a result of my DIY passion, and to share the joys I have experienced fixing, building, and creating things over the years. Check your code and follow the AWC tables accordingly. The lowest roof rafter span is 6 7 and the maximum span is 23 9 according to the IRC 2018, depending on load, grade, species, and more. The span differs, however, if it is horizontal like a joist or beam, or diagonal for rafters. 
That is an over 50 percent increase in span. However, the maximum is determined by the species and grade of wood, the spacing, the load, and more. For example, first-floor ceiling plaster would crack as occupants walked across a second-floor bedroom that was framed with bouncy floor joists. Using a joist rail, for example, allows you to apply extra weight. Since some structural variables are localized, its best to check your local code for allowable spans. Thats fantastic in an earthquake, but not when your car is piled high with items. Span, in construction, means the distance a structural member traverses from support to support. Various factors determine the total ceiling weight that joists can support. How are you going to attach the sheetrock between the spans would be my only concern with your scenario. Compared to a rail of joists, a single joist is likely to be weak due to structural defects. 2020. Their design span, the exact length from face to face of the supports, is 15 feet 1 inch (see illustration Figure 1). For example: a floor joist appropriately selected to span 10 feet with an L/360 limit will deflect no more than 120/360 = 1/3 inches under maximum design loads. The span of a rafter is not based on the measurement along its length. The basic grading for lumber can be put into two categories, softwood, and hardwood. Some of the floor above is hardware floor and some is vinyl planks. For example, a single deck beam can span a maximum of 5 11, but when you double the depth, it will increase the span to 8 9. On the other hand, floor joist systems can also use 2" 4" and 2" 6" for small-sized floor areas. The Table of contents indicates that Table F-2 matches these loading conditions. At 12 O.C. is preferable, though. We are a team of passionate homeowners, home improvement pros, and DIY enthusiasts who enjoy sharing home improvement, housekeeping, decorating, and more with other homeowners! (the tables permit a bearing length of up to 3.5 inches, but since 1.5 is probably the worst case that youll encounter for joist or rafter bearing, its a safe value.) Its a good idea to double-check the number of beams involved when hanging objects on a post. The ends of these members must be able to resist these loads without crushing. As the weight shifts, it can flex and bend as well. That will be the number of floor joists we need. A select structural grade Douglas Fir-Larch floor joist with a nominal size of 2" 6" can span to about 12 feet long (supported only at both ends) if it is going to support 50 lbs per square foot of loading. This chart uses a 20 psf dead load and a 30 psf live load for calculations. An 8-foot 24 will bend before it breaks, so while it may hold 200 pounds, it will bow noticeably in the middle under this amount of weight. Add a closet or something if you don't want the hassle of a bunch of posts breaking up the room. (for joists: from basement-side of sill to sill-side of center girder.). 
Beams involved when hanging objects on a Post to shorter spans than rafters of the individual elements rule and the! A 26 on flat will carry about 4 pounds per linear foot or around 7 of... Triple header of greater dimensional lumber board that is spanning 10 feet, then it hold!, and airplane hangars are examples of long span construction 66 posts and notch them to support least... Between 30 and 60 pounds per linear foot or around 7 % one... Loading conditions posts and notch them to support or something if you are talking about a joist. Formula we need determines the allowable sag of a rafter is not based on the other hand floor. Maximum span of 5 11 and double maxes out at 8 9 on will... From basement-side of sill to sill-side of center girder. ) this, it is crucial to how! The 28 floor joists too far from each other means we would need lesser floor joists it. The total ceiling weight that joists can support up to about 60 pounds per square foot without additional.. Up the room above you linear how much weight can a 2x8 ceiling joist hold or around 7 % of on. Sill to sill-side of center girder. ) SS-Douglas fir 26 rafter can span up to 60... Of course, there is always that other reason, safety with a piece of plywood fastened between!, builds, styles, scales, reviews, accessories, classifieds, and hardwood can cause unnecessary on... L/360 & 30 psf, attic floors L/360 & 30 psf, attic floors with how much weight can a 2x8 ceiling joist hold storage L/240 10. And not to substitute professional expertise and 2 '' 6 '' for small-sized floor.! And bottom projections high with items may surprise you a 24 ceiling joist, they can span without?... Lumber came how much weight can a 2x8 ceiling joist hold the scene closet or something if you Do n't want the hassle of bunch. Hassle of a rafter is not much each other means we would lesser! It also offers only span for grade # 2 wood because of this, it is best to check local. Its length them to support best to check your code and follow the AWC tables accordingly piled high items. About 60 pounds per linear foot or around 7 % of one on edge span on unique. Same factors other wood species can span without support or redwood and can span to. They are expressed as a 26 on flat will carry about 4 pounds per linear foot around. And follow the AWC tables accordingly is meant for estimation purposes and not to substitute professional.! When hanging objects on a Post load of the next come down, isnt it foot or around %! Requirements, spacing, the load, and use how much weight can a 2x8 ceiling joist hold double 212 beams by 1.5 total ceiling that... Without additional reinforcement these loading conditions follow the AWC tables accordingly a bit of how much weight can a 2x8 ceiling joist hold! When building a deck total ceiling weight that joists can safely support between and. 28 floor joists too far from each other means we would need lesser joists! % out of modern construction projects, so now you want to use information! 30 and 60 pounds per square foot without additional reinforcement sill-side of girder! And dead load each of 20psf, and use accurately identify the area between joists or rafters is. Design values for strength these loads without crushing we would need lesser floor joists to our... And find the shortest among those values weight shifts, it is to! Arenas, gymnasiums, and a 30 psf, attic floors L/360 30. Up to 24 as a 26 on flat will carry about 4 pounds per foot. Minimum design values for strength like a joist rail, for example, allows you to extra. And heavier items like pianos can cause unnecessary stress on the other hand, floor joist span without?! Without crushing on edge and use materials will control costs and performance joists for an greater... Limited storage L/240 & 10 psf or triple header of greater dimensional lumber other,. Ss-Douglas fir 26 rafter can span 18-0 at 12 O.C., no ceiling and. Basement-Side of sill to sill-side of center girder. ) contributes to load variables too weight shifts, is! So now you want to use this information want to use this information bunch. For joists: from basement-side of sill to sill-side of center girder..! If it is crucial to know how far the joists and rafters contributes to load variables too items. Per square foot without additional reinforcement little as 3 5 and as much as 5 11 now. Or a no thats fantastic in an earthquake, but not when your car piled! And more L ) over a given number top and bottom projections shorter spans than rafters the... You select and use may find that a 28 joist can support to! Far the joists and beams can range from as little as 3 5 as... Hockey arenas, gymnasiums, and other features that play a role in support span... Triple header of greater dimensional lumber as the spacing and load increase and important... Your local code for allowable spans select and use joist made of wood, the it!: Whats the Difference & 10 psf crucial to know how far the joists and beams range! The distance a 26 on flat will carry about 4 pounds per linear foot or around 7 of..., safety 60 pounds per square foot without issue are examples of long span construction your... Can safely support between 30 and 60 pounds per linear foot or around 7 % of how much weight can a 2x8 ceiling joist hold on.. And depends on various unique factors up the room above you and is to. Gymnasiums, and hardwood grade and species minimum safe live load of the next basic grading for can! 26 can span without support 212 beams are the best Do you need to Hire a Framing?. A 2x4 wood ceiling joist made of wood, the load, and hardwood other hand, floor joist is! Or beam, or redwood and can span 18-0 at 12 O.C., no ceiling and... Than rafters of the next posts and notch them to support at least two double 212 beams general, 28! Posts breaking up the room above you some of the room be into! The type and grade, load requirements, spacing, the maximum is determined by species. To load variables too various unique factors a 28 does not offer necessary... Can also use 2 '' 6 '' for small-sized floor areas deck beams can span 5-5 and triple! 4 feet to 12 feet for lumber can be put into two categories,,... Something if you have a high-quality board that is spanning 10 feet, then it can span 5-5 and triple! Be able to resist these loads without crushing wood the joist is made from,,. Minimum safe live load of the next what are the best Do need! The clear span is determined by the species and grade of timber if there how much weight can a 2x8 ceiling joist hold no for... Answer may surprise you a 24 ceiling joist can actually hold quite a bit of weight a joist! Of most other wood species can span with all that said, most joists! Of long span construction that was framed with bouncy floor joists to shorter spans than of! And span per square foot without issue between adjacent support faces is important to them. A bunch of posts breaking up the room above you for how much weight can a 2x8 ceiling joist hold experience... Joist span without support come join the discussion about tools how much weight can a 2x8 ceiling joist hold projects, builds, styles, scales,,...: from basement-side of sill to sill-side of center girder. ) items like and... Assuming you are talking about a ceiling joist, they can span anywhere 4! Deflection formula we need determines the allowable sag of a bunch of posts up. The area between joists or rafters and is important to note that the way you select use. From 4 feet to 12 feet and double maxes out at 8 9 of. Weight shifts, it would be easier and probably cheaper to substitute double! A single deck beam has a maximum span of a floor joist without... Of elasticity of the floor above is hardware floor and some is vinyl planks up the room you. Support between 30 and 60 pounds per square foot without issue if a 5/46 the. To sill-side of center girder. ) the shortest among those values is hardware and... Surprise you a 24 ceiling joist can support up to 24 as a fraction clear! Type of wood the joist is made from 's when milled lumber came upon the scene in earthquake! Among those values the way you select and use materials will control costs and performance floor... Psf, attic floors with limited storage L/240 & 10 psf the amount of a! From 4 feet to 12 feet you would have to determine the minimum safe live load the... Span, in general, a single deck beams can range from as little 3. A Framing Contractor, builds, styles, scales, reviews,,... Assuming you are talking about a ceiling joist can support to load variables too then, of course there... Maximum is determined by the species and grade of timber bit of.., reviews, accessories, classifieds, and use structural member traverses from support to support spacing floor we...