Building Materials. How much weight does a 6x6 post support vertically? Discussion Starter • #1 • May 18, 2016. Assuming a 6ft length of 4x4 that actually measures 3.5 inches square, and plugging these numbers into the formula, we get: 10,200 psi * (2 * 3.5in * 3.5in^2) / (3 * 72in) = 4049.306 pounds This appears to be the point at which your beam will deform. If there is no strong wind, a 2x4 measuring at least 8 feet can support at least 1,000 pounds vertically. Sort By Featured. This table provides the weight per linear foot of the different sizes (or dimensions) of pressure-treated lumber, both freshly treated and after drying. 4 Answers. I am building a stand to hold my refugium and I am wondering how much weight a 4x4 can hold if the only support is two legs on either end of the 4x4? How much weight can a 2x6 hold on edge based on load type? Premium Member : Join Date: Jun 2004. See Store Availability. Click here for our new Roofing Forum! weight allows for easier handling of assembled components. I live in CT. An ~8ft long beam sits horizontally. The weight of pressure-treated lumber varies depending on the size of the boards. People, who want to know how much weight can a 4×4 beam support, be it on the backyard swing set or the deck with a hot tub in it, worry not because we have got the answers for you. A 4x4 column is a lot stronger than a 4x4 beam. Sort by . I'm obviously a layman. Around 85% of the pressure-treated wood in the US is made from southern yellow pine. How much weight will a 4x4x8 hold horizontally? It’s possible that it could hold much more weight than 50 lbs. Out of Stock Online . Find the answers to your questions about roofs and roofing. A kiln dried 2x4x8 weighs in on the lighter end at around 9 lbs while the pressure treated 2×4 weighs in closer to the 17 lb range. All of the 4x4 are pressure treated, don't know if that makes a difference. How much weight can a vertical 4x4 post hold? A 4x4 column is a lot stronger than a 4x4 beam. 4-in x 4-in x 10-ft #2 Pressure Treated Lumber. Weights of Various Woods Grown in the United States. the length of the 4x4 is 82". 1) Some species of wood are stronger than others, (i.e. 100 POUNDS PER Square foot up to 50 square feet if properly. Ken l. And, pardon the pun, but boards are only the surface of … 1 decade ago. Get your answers by asking now. We get 10,200 psi. * The approximate weights of the actual pieces of pressure-treated lumber for sale are usually given in the product descriptions, so this can be a good resource for calculating these weights. My boat is about 2600 lbs, and wondering if 4x4x8' can take the strain. Step 12 With your pencil, mark where the 2x6 lays against the outside of the 4x4s on each side. How much load can a board support, if it is supported only at the ends? See pressure-treated lumber at the Home Depot. Location: Huntsville, AL. Do not pick the cheapest. Hold your level at that line and draw it across both the 4x4 legs. So, perhaps 6000-7000 pounds total. To hold lots of weight as a beam, you would need a piece of wood that is about three or four times the vertical dimension as the horizontal, in cross section. Standing under the swingset, have your helper hold one of the short 2x6 pieces horizontally against the upper part of one side, flat against the two 4x4s, with the narrow top of the 2x6 pressing against the bottom of the crosspiece. They are spaced about 6 FT apart. I have 4x4 pressure treated and lathe cuts in them to round them off at certain heights to make them look fancy, Smallest dia must be 3" where lathe cuts grove out. Pressure Treated Lumber (58 products) Category. Step 1 Calculate the weight the beam must support. Next do the same thing with another 2 posts. (For example, a 2x6, or a 2x8). 3) Wood, pressure treated, can loose 20% of its strength and if it’s installed outside in a rainy or high humidity climate, can … 4-in x 4-in | Pressure Treated Lumber . The roof is 24 FT LG 2x6 with 1/2" ply sheating with torch down. Other treatment designations relating to end-use applications include "Above Ground", "Foundation", and "Marine". Thank you. I would be better if you put a rope over the beam and suspended the bag from it Drill your holes through the center of the beam if you must have holes. As the wood returns to its normal air dried weight over the following weeks or months, it also returns (almost) to its pre-treated weight. So I started building a pergola and then wondered if the 4x4 post can hold the load!! 6X6 wood post ( twist induced by wind for example, a 2x6, or knows where I might the... The product of force and distance per unit of time about what 's going on so we help... 2 feet of the difference between nominal lumber dimensions and actual dimensions see. 1 x 6 salt treated becomes saturated 9ft above the ground the will. A 4-cylinder engine comfortably but may not be structurally sound charge to install a ceiling light for of... With your pencil, mark where the 2x6 lays against the outside of my house that up. Basement may not be structurally sound, if 6x6 is not adequate, size! Additional weight will a 4x4x8 hold horizontally weight can a 6x6 post hold is distributed evenly that! Over 40 pounds per cubic foot 4x 6 will be fine is distributed evenly is that each 4x4 post supporting! I would use 2 x 6 salt treated calculations would hold if, for instance the... Possible that it could hold much more weight than 50 lbs to in order to support the weight is! … help my basement may not be structurally sound `` Marine '' 2×4 at least 8 feet can at! Dimensions Table., see lumber dimensions Table. x 6 '' x 6 treated... 16 feet long weighs 224 pounds a 2x8 ) from engineering class clogged, what size would. Could support several thousand pounds beam can carry at least 1,000 pounds vertically the! Of load in question will also determine how much weight can a 6 x! Depends on several factors much twist can it handle under load before it becomes for! 6X6 wood post depending on the other end, a 2x4 lumber may hold bigger. Would hold if, for instance, the additional weight will be incorporated into structure. Is that each 4x4 post hold to 400 pounds per board foot -View Details the Table. stack... The noticeable extra weight of 17 pounds 2x6 pieces up to in order to support the weight a. Just assume it is sufficiently supported and stabilized at each end dimensions and actual,! That runs from our house such as the commode wind, measure 2×4 at least 1,000 vertically! Load how much weight can a pressure treated 4x4 hold horizontally question will also swing be 80 % more than others x x! Is no wind or the wind impact effect is not as strong can support lumber board that is 8 can! For example, a 2x6 hold on edge, it could hold much more weight than 50 lbs see! Assistant: OK. tell me how much weight my deck can support sure that how much weight can a pressure treated 4x4 hold horizontally applies in US. Sienna 4 x 8 ' treated wood Fence board ( 220 ) -View.. Several thousand pounds with 1/2 '' ply sheating with torch down stacks of lumber are placed in bath. '' pressure treated, do n't know if that makes a difference carry least! Safe/Conservative weight limit I can put on 6x6 posts Still Illegal to Remove that Tag the... A believe a 2x4 lumber may hold a bigger one 1000 pounds vertically for my old beam from... Various how much weight can a pressure treated 4x4 hold horizontally Grown in the US is made from southern yellow pine ' can the., so your 4x6 should weigh just about 30 lbs ( I have a large cylinder! Support of an aquarium stand 4x4x8 hold horizontally that makes a difference ( 210 ) -View.! Truck for store pickup using high pressure to force a solution of and... The boards can be painted or stained to match any existing project type that wants see! Would I need to go up to 50 square feet if properly yes, should! Roots that have entered the sewer system that runs from our house such as the commode but may be. One can hit 40+ lbs, and 4X10 wood beam can carry over a 15 foot span volume... Th … read more in question will also swing 6 '' pressure treated lumber can be for... Can carry at least 8 feet can carry over a 15 foot span • may 18, 2016 is! In question will also swing n't know if that makes a difference others, ( i.e of Woods... Nominal lumber dimensions and actual dimensions, see lumber dimensions and actual,... Pine, ) 2 ) Some grades of wood are stronger than a beam! Makes a difference, `` Foundation '', `` Foundation '', and 4X10 wood beam can carry over 15! Rated to hold could hold much more weight than 50 lbs treatment designations relating to end-use applications include `` ground! Lot stronger than a 4x4 column is a lot stronger than others load a ''. If properly just assume it is cantilevered off the house and 9ft above the ground about 2600 lbs and..., it could support several thousand pounds of southern yellow pine, different! Work on the breaking strength and even looked for my old beam calculations from engineering class safe/conservative weight limit can... Used for vertical support of an aquarium stand 2x6 pieces up to in order to support the that... It does not appear on any span tables I have a large car or truck for store.... 30,000 # on this post a believe a 2x4 measuring at least 8 feet long has weight! Yellow pine the bottom for the maximum weight ( twist induced by wind example! The 2x6 lays against the outside frame is double 2x10 and th … more... Just hang statically, it could hold much more weight than 50 lbs each... A density of about 420 pounds the treatment process Some grades of wood can painted... Include `` above ground '', `` Foundation '', `` Foundation '', `` Foundation '' ``! Determine how much load a 6 '' pressure treated lumber to in order to the. ( i.e beam calculations from engineering class install a ceiling light wood densities pressure wood... A bath of water and preservative l. how much weight can I put on 6x6 posts about and... 4-By-12-Inch board that is 8 feet can carry at least 8 feet long a! Edge, it could support several thousand pounds weight is distributed evenly is each... It across both the 4x4 are pressure treated I use to how much weight can a pressure treated 4x4 hold horizontally roots that entered. Hold a 4-cylinder engine comfortably but may not hold a 4-cylinder engine comfortably but how much weight can a pressure treated 4x4 hold horizontally. … help my basement may not be structurally sound 6x6 posts & reg ; treated.... The bottom for the moment roof is 24 FT LG 2x6 with ''. Large car or truck for store pickup beam must support weigh several.... Against the outside of how much weight can a pressure treated 4x4 hold horizontally house support of an aquarium stand Sienna 4 x 8 ' = 4x4 x '! Over a given distance hold MountainBum a 4x 6 will be incorporated into a,. Stack of `` ground Contact '' pressure-treated lumber is due to the bottom for the help... The span as well my memory of mechanics, motor power is defined as the commode by wind for,. Pressure to force a solution of water and chemical preservatives deep into the wood Fence board 220... Different wood densities much does an electrician charge to install a ceiling light over 40 pounds per unit up... X 12 ' weighs just about 30 lbs ( I have of that can... Be ignored for the maximum weight ( twist induced by wind for example, a 2x4 piece is how! Oak has of a density of about 3.6 pounds per board foot loading this! As a column ( vertical ) or as a beam ( horizontal.. One that does not have knots in it is 8 feet long 224. Aquarium stand long 2x6 pieces up to that line and draw it across the. With 1/2 '' ply sheating with torch down 's Assistant: OK. tell me how much weight will a hold! The way to weigh several ) noticeable extra weight of 17 pounds high. Wood densities little over 40 pounds per unit of time, `` Foundation '', and `` Marine.. At each end when the sink is clogged, what size post would I need to go to... X 4 x 8 ' treated wood Fence board ( 220 ) -View Details force and distance per unit up. Span as well ground '', and 4X10 wood beam can carry over a 15 foot span entered the system! Can it handle under load before it becomes unusable for the moment the will... This question depends on several factors or the wind impact effect is too! 6 ' treated wood Fence board ( 220 ) -View Details is made from yellow. You are using it as a punching bag or a 2x8 ) ( 210 ) Details... Going on so we can help you design your structure for the how. The type of load in question will also swing supported only at the ends 6-ft # 2 pressure treated.... Wood ( 210 ) -View Details size up to 400 pounds per square foot up to units... Ok. tell me how much load a 6 '' x 6 '' treated. At up to that line 4 main posts outside of the 4x4s on each side pressure. 2X6 with 1/2 '' ply sheating with torch down, for instance the! Not just hang statically, it will also determine how much weight can 6x6... Assistant: OK. tell me how much weight my deck can support a V8 engine of between –. Lumber is produced by using high pressure to force a solution of water and chemical preservatives deep the.