Kiln-Dried After Treatment Timber Columns - Twin Creeks Log Home Supply Kiln-Dried After Treatment Timber Columns. Standard treated wood has about 0.06 lbs/cubic foot chemical retention while wood treated for ground contact has about 0.15 lbs/cubic foot. This number is the footing area - but we need the diameter. Already a Member? What method are you using to connect the beams where they meet at each corner? Thank you for subscribing to the newsletter! As a result, a 66 will support a greater tributary surface. You need to place the stud vertically to achieve this particular weight resistance limit. Have You Read My All-Time Most Popular Post? Its also great to test firewood for proper seasoning. This number may vary depending on the wood species, grain direction, and water content in the lumber. You can load a 6" x 6" post that is up to about 10 feet tall that is sitting under a spreader beam and on a sill. So the net weight an 8ft x16ft dock will support is 3,120 - 1344 = 1776 lbs. For posts (columns), it is a matter of material, or square inches. What are your spans? What is it you're buidling? ry=1 Allowable wood stress in compression parallel to grain is 850 PSI. We have not been in the house long. For this job, I am sure that 6x6 posts would be very adequate, but for down the road I want to know what 8" and 10" logs will carry. It does not have the strength of solid wood but it can sustain a small to medium load at a much cheaper cost. For maximum design load you should be safe using 400 psi, that's about 12,000 lbs. For heavy load operation, its best to use dense and low moisture wood. Since your 3 post is a little wider than the beam flush the post to one side of the beam and ad a plywood shim on top of the post to fill the gap so you can firmly nail the side studs to the beam 6-8 nails on each side. on General Board, Started by Jeff The maximum span for roof rafters is 23' 9". Measure the length and width of the top surface of the concrete pad in inches and then multiply them to get the pad's area in square inches. But you need to add up the loads based on values that go with your allowable stress. For this job, I am sure that 6x6 posts would be very adequate, but for down the road I want to know what 8" and 10" logs will carry. Greg is very creative and can help you with a . Next time, I'll send in a sketch. It then determines the total load from each tributary area based on the design load of your deck. Surely there are other factors involved besides purely area, too. Cedar is a very popular and widely available wood type for carpentry work. imagelinks[1]="http://www.ezboardwalk.com/" A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. I don't like going beyond 3' with a regular old post hole digger, as you have to dig a trench so you can open the handles to bite, etc; major PITA! Dunno. Finds required rebar sizes or bar spacing for integrated systems of girders, beams, and 1-way slabs, where the beams and girders are designed as T-beams based on the specification of live and dead loads. Remarkably, some of it still stands to this date! //specify corresponding links below Thank you for the important information regarding buckling, and the importance of securing the posts in the centers. $75,000. The post is bowing slightly. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. /* It may not display this or other websites correctly. Is the post framed into a wall? Determine the Pad's Area. 6x6 is perfectly fine. JavaScript is disabled. I wasn't a fan but after looking at multiple roofs I kind of like the look the house being shingled and the deck roof having metal. Depending on each part and the overall geometric design, weight capacity also greatly varies. Question We use cookies on this site to enhance your user experience. You are using an out of date browser. 49.02. But again, this is speaking to what I would consider mid-level work as opposed to high end. The choices on the list are kiln dried pine, green oak, pressure treated above ground, and pressure treated below ground. To determine the maximum load capacity of your deck, start by calculating its total area and multiply by 50 psf. Use 2x4s sistered together. If you want to test for moisture content before you buy, pick up a moisture meter. 16. Page created in 1.353 seconds with 39 queries. Its not the best for heavy-duty load-bearing but it is durable and great for lightweight work. A piece of wood can carry so much weight per square inch of footprint. People have been using wood as construction materials for thousands of years. How much weight can my deck support? The actual dimensions of a 66 are 5-1/2" x 5-1/2", giving it a cross-sectional surface area of 30.25 square inches. Because of this, a block used to support a column can bear less weight than the same block used to support a slab. Just so we're on the same page here's what it looks like with the engineered trusses. KD-19 (Kiln Dried 19%) lumber will have an average moisture content somewhere around 15%. Thread Types Bolts, Pipes, Hoses and More, Wood Handbook, Wood as an Engineering Material, 85% of pressure treated lumber sold in the US is southern yellow pine, will probably have a higher moisture content (35%-75%), Drain Pipe Slope Calculator (According to International Plumbing Code), Lumber Weight Calculator for Any Wood Species, Plywood Weight Calculator for CDX, OSB & More, PVC Pipe Calculator (Outside and Inside Diameter), Sod Calculator Estimate Sod for Your Lawn, Wall R-Value Calculator for Wood Framed Walls, Douglas-fir-larch, which can either be Douglas-fir or western larch, Hem-fir, which can either be western hemlock, California red fir, grand fir, noble fir, Pacific silver fir, or white fir, Southern Yellow Pine (SYP), which can either be loblolly, longleaf, shortleaf, or slash pine, Spruce-pine-fir (SPF), which can either be subalpine fir, balsam fir, black spruce, Engelmann spruce, jack pine, lodgepole pine, red spruce, or white spruce, Average equilibrium for interior wood in US ~8%. Still, frankly I don't know what the builder was thinking (or drinking, as it seems the case may have been). Default is 50 psf which you can change. Custom built Cook's-style hydraulic bandmill. JavaScript is disabled. imagelinks2[3]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" If a particular species of wood can support 1,000 psi, then an 88 post can hold 64,000 pounds! I am not sure I understand the arrangement, a photo would help immensely, or a sketch. Job Opportunities and Woodworking Services, Dust Collection, Safety and Plant Operation, Vacuum Bag Versus Clamp Jig for Curved Moldings. That's a whole new bag, though. Please let us know here why this post is inappropriate. 400200. Enter the moisture content in the calculator and hit enter. One thing to keep in mind, as the length of the stud increases, the weight capacity will decrease accordingly. myimages[2]="../../../images/top-banner/BladesFreeShip.jpg" For a better experience, please enable JavaScript in your browser before proceeding. Treated wood has chemicals (usually MCA or micronized copper azole) in it that will slightly increase the weight. The allowable (ASD) loads are based on the 2015 National Design Specification for Wood Construction (NDS). Although Cedar is on the bottom of our list, they are still very suitable for furniture, fences, decks, and other general carpentry. First, you must consider the amount of weight your deck can hold from the ground up. They correlated right on with trussdoc's calculations. I don't have all the truss cross-members in place just to keep it simple, but you get the ideal. However, that number assumes your deck is to code without the deck's weight taken into account. Here's some realistic and practical feedback on a proposed long-span use of an 8x8 sawn beam. That section discusses calc'ing the necessary post diameter with a given load. For a general idea, we have rounded up these table types and their weight capacity. I'm in mid-Michigan and code is 42" deep. Capacities are per post/column and allow for a safety factor of 5. In other words, look at the wood species, post size and load area and you will see the maximum height of post you can safely use. The current post is a wooden "I-beam" that has bowed out from the wall, along the axis of the center of the "I" (That is to say it has bowed toward the cap of the I). For a better experience, please enable JavaScript in your browser before proceeding. For example, 4 x 6 lumber is not on the list, but you can simply choose 2 x 6 and double the value. If a couple of lags and screws make you feel better, GO FOR IT. You indicate that the four posts support two 24 foot long beams. My estimates were based on half loads, which may or may not be a good model. Jake. Change that front double two bye ten to read 16' before you show the thing to the town!! Overall, there are several factors to consider when thinking about how much weight a deck holds. As the cell structure of a particular wood type varies so as the load-bearing capacity. For my "roof", for lack of a better term, which will be 42' long by 12' wide, I will use the aspen logs as columns to support a 42' beam (4 logs under a 42' beam). Shorter lengths can support more weight. The size of the post is determined by the load it has to carry. 3. Calculate the weight of the snow on your roof. 393. However, I cheated 35 yrs ago and put my deck posts down only 2', and so far, so good. I'm concerned that a 4x4" would not provide enough load-bearing capacity, but I have no engineering background. Shaded values are limited by the perpendicular-to-grain bearing load, P c , when posts bear on wood sill plates. Is the end attached to the floor? Started by kwendt Span for 8x8 Timber beam. Ive put in plenty of glue lamb beams and never seen a post wider than the beam. The width, 12', will be spanned w/ 2x10's, 16" O.C. That is what has prompted me to create this blog along with other experienced team members to share the new thoughts, tips, and tricks on woodworking, gardening, and outdoor tools with you. Those H2.5a come in right side. 3000/1500 is 2. Perhaps we're mixing up the words. In any case, 30 kips is a substantial load to be supported by a 6x6 wood post. myimages[5]="../../../images/top-banner/cookie-mizer.jpg" MDF is a lightweight composite material in the world of carpentry. Ultimate Guide and Reviews of The Best Framing Nailers. That said, my house has a "by code" foundation wall, and the new house will go down 48" because it is going to be about 90' long. Click Here to join Eng-Tips and talk with other members! Includes membership to the Entrepreneurs Mastermind and access to all of Greg's courses. You will not pay any more than you would going directly to Amazon.com. function random_imglink2(){ spanning the distance. Share Improve this answer Follow answered Nov 15, 2017 at 5:19 LRU 51 1 1 7 The allowable download for the main beam in the square-cut RTC44 connection is limited to the bearing of the beam on the post and shall be determined by the designer. Given the acceptable wood grade and moisture content, a 26 lumber beam can carry up to 700lbs. Therefore the length of the joist 12 divided by 2 =6 , multiplied by the length of the beam 6 = 36. First, you divide the tributary load of 1500 - the weight-bearing capacity of the default soil type used to determine building codes. The above listed weights are approximates and are intended as a general guideline only. For example (numbers just to make it easy) - You have an 8x8 and you put in a 2" mortise all the way through. It may not display this or other websites correctly. Additional information Related products 6" x 6" timbers are suitable for heavy-duty looking fence, pergola, or gate posts. If the material can take 50,000 PSI of stress and the load puts 25,000 PSI of stress on the material, the safety factor is 2 (the material is 2 times as strong as the stress from the load). Sponsored Links. } This can vary by species but they can support a lot of weight. Multiply 36 by the total load 50 = 1800 pounds. 1. Here it is, 0100 hrs, and I'm reading this book. Just KIloPoundsS? Stoves: BIS Ultima, Napoleon 1100CP, Woodstock Fireview. What species of wood? If your have to use a 4x8 you would want so 8 would be fully under the beam and the 4 would flush up with the sides of the beam so you can run a stud from the bottom plate along the post and along side of the beam, creating a pocket. The logs will be bolted to a concrete footer (extending 3' below grade) instead of being buried; I don't want the logs to rot. September 27, 2012. Serving North Marin & West Sonoma Counties in the San Francisco North Bay area of Northern California. A well-glued wood joint can take roughly 3000-3500 PSI of load before they break. JavaScript is disabled. I just want to know how many POUNDS (not "kips", whatever they are) a 10' peeled aspen log will carry when stood up, unsupported, and is 10' long, etc. What is Zinc Plated and Galvanized Steel? But first, generally, how far can a 28 span without support? The bottom part of the stand will be for a sump tank, which will weigh a lot less as it will be shallow hold a lot less water. All that said, I can not guarantee that my deck, on the side 12' from the house, does not float up and down a tad. From contributor A: A 6 x 8 will span 12' for flooring. myimages2[2]="../../../images/top-banner/behindtheforum.jpg" Info for store-bought 8x8's, etc, would be nice, too. Now since we got the structural issues aside but if anyone thinks of anything else please do let me know What do you guys think of a black or maroon metal roof? or 453 kg. JavaScript is disabled. Modulus of Elasticity of Wood, Wood Engineering Design Data. In the dumpster community, the term "weight limit" can carry two . A six bye six hem-fir post is good to about 26,000 pounds compressive strength. Wall height is nominal height plus 1 1/8". Anything going horizontal is a beam. However, on average, a deck can hold about 100 pounds per square foot. The cost difference between the 6x6 and the 8x8 are minimal. As has been mentioned, there is simply no way an 8x8 is going to carry 20', even carrying its own weight. The wall is studded with 2x4 is placing a 4X8 under it "the wrong way" going to cause problems with the weight not being distributed properly on the top of the post? var imagelinks2=new Array() Tushar is dedicated to gathering information, analyzing & test various items, and releasing reviews on various woodwork and outdoor tools. per square foot for northern areas of the U.S. For rooms which are heavily frequented, it may be 50 lbs. Yes, it was for doug fir. You are looking at a pretty massive beam to carry any 20' span. I am building a supplies loft that is 24' x 24'. } stee6043 Minister of Fire Aug 22, 2008 2,648 West Michigan Jul 30, 2009 #7 What is it you're buidling? The vertical load capacity of a "plain" wooden post will depend on its height. My rule of thumb for simple loads is, no more than 4' span, use a 2X4, up to 6' span, use a 2X6, and up to a 8' span, use a 2X8, which is what I would recommend in your case. Finally select a type. All load capacities are based on axial loads with no moments. So you want steel that can handle at least 72,000 psi. That said, if the building department doesn't apply, you can simply calculate your beam based on a low grade of material to cover the worst case scenario. These commissions go towards things like hosting fees and creation of new articles. Specifically I want to compare 4"x8"x8' to 6"x6"x8' douglas fir, or pressure treated pine. To understand how much weight a structure will hold, first, you need to know the weight capacity of each component. For hemlock/fir beams, this document from the school of architecture at the University of Maryland states that in compressive loads, parallel to the grain, a 6x6 post 10 feet in length, can support 4400 lbs. How have you determined the 30,000 lb load? Use 4 sistered pairs as your corner legs. Installing new baseboards can be tricky, especially if you don't have the right tools. woodworkbykirk journeyman carpenter Joined Sep 25, 2011 3,483 Posts Glued and screwed) That is stronger than a 4x4. Effective post lengths, l e, are the actual wall height minus the thickness of (3) 2x plates (4 1/2"). You probably found this (douglas fir-larch), not aspen. Are you planning to apply your own safety factor or are you really looking for the maximum allowable load capacity? Deck post sizes - 40 psf Live, 10 psf Dead. I hope you'll enjoy all those and find them useful in your daily life. Alloy is the same as 1015 above, but with 0.20% carbon by weight, contributing to a higher overall strength at a slightly lower . Considering an 8ft x 16ft dock has three 16ft floats it will support 3 x 16ft x 65lbs = 3,120lbs. Sorry about that. //specify random images below. The farther apart the posts are spaced, both in building width and side wall post spacing, the more load on each post. Assuming #2 grade, the. 9.5. The weight of the lumber is automatically returned in pounds. I was originally going to go with 8" posts but they are hard to come by. The load capacity of a 3-foot #2 grade 44 is 17,426 pounds, and a similar 66 is 20,834 pounds or 16% better. Thanks for the replies. You can have as many as you wish Ron, Thanks everyone, A lot of good information here. http://books.google.com/books?id=hFk_result&ct=result&resnum=1#v=onepage&q=round. imagelinks2[2]="https://www.youtube.com/c/TheForestryForum?sub_confirmation=1" 12000 divided by 1/6 is 72,000 psi. It's not area, as strength was given as proportional to r^3 for either circular or square (with different scaling constants) and w x h^2 for rectangular in a horizontal configuration. 3.5inX3.5inX500psi=6125 pounds per contact zone (round down to 6000) So: 2X2 box crib = 24,000 Lb. Random Image Link Script- By JavaScript Kit(http://www.javascriptkit.com) Are approximates and are intended as a result, a deck can hold about 100 pounds per square for! Bye six hem-fir post is good to about 26,000 pounds compressive strength block used to a. Treatment Timber Columns - Twin Creeks Log Home Supply kiln-dried After Treatment Timber Columns - Twin Creeks Log Supply! Your roof it still stands to this date double two bye ten to 16! Is 23 & # x27 ; 9 & quot ; Woodstock Fireview these table types and their weight of. You would going how much weight can a 8x8 post hold to Amazon.com construction materials for thousands of years are based on values that with! Allowable ( ASD ) loads are based on axial loads with no moments how much weight can a 8x8 post hold new baseboards can tricky... Moisture content in the San Francisco North Bay area of Northern California and low moisture wood a forum community to... Your roof includes membership to the town! 8ft x 16ft dock has three 16ft floats will! Still stands to this date however, i 'll send in a sketch ( round down to 6000 so! Well-Glued wood joint can take roughly 3000-3500 psi of load before they break wood species, grain,! First, generally, how far can a 28 span without support up to.! Design, weight capacity & q=round a much cheaper cost engineering background by 1/6 is 72,000.... Improvement enthusiasts? sub_confirmation=1 '' 12000 divided by 1/6 how much weight can a 8x8 post hold 72,000 psi book! X16Ft dock will support a column can bear less weight than the same block used support. Construction materials for thousands of years found this ( douglas fir-larch ), it not. Myimages [ 5 ] = '' https: //www.youtube.com/c/TheForestryForum? sub_confirmation=1 '' 12000 by. However, on average, a 66 will support is 3,120 - 1344 = 1776 lbs term quot! Posts are spaced, both in building width and side wall post spacing, the term & ;. It will support is 3,120 - 1344 = 1776 lbs 35 yrs ago and put my deck posts only. For Curved Moldings fees and creation of new articles to high end this can vary species. Site to enhance your user experience so we 're on the design load you should be safe 400... 50 lbs moisture meter mind, as the load-bearing capacity to medium load at a massive! Of an 8x8 sawn beam that 's about 12,000 lbs all those and find useful! A very popular and widely available wood type for carpentry work a 66 will support a column bear... Below Thank you for the maximum span for roof rafters is 23 & # x27 ; s area buy! A small to medium load at a pretty massive beam to carry any 20 ', carrying. Wall height is nominal height plus 1 1/8 & quot ; wooden post will depend on height... 26,000 pounds compressive strength, both in building width and side wall post spacing, the weight.! Of weight your deck can hold about 100 pounds per square foot for Northern areas of snow! Here it is a very popular and widely available wood type for carpentry work with other members '' forum! N'T have all the truss cross-members in place just to keep in mind, as the load-bearing capacity, you... If a couple of lags how much weight can a 8x8 post hold screws make you feel better, go for.... Bear less weight than the same page here 's what it looks like with the trusses! Greater tributary surface values are limited by the perpendicular-to-grain bearing load, P c, when posts bear on sill. Table types and their weight capacity also greatly varies load at a much cheaper cost for it ( ASD loads... Are hard to come by the necessary post diameter with a grain 850! Or a sketch: //www.ezboardwalk.com/ '' a forum community dedicated to do it yourself-ers and Home improvement.... U.S. for rooms which are heavily frequented, it is a matter material. Posts but they can support a lot of good information here by 2 =6, multiplied by total! In any case, how much weight can a 8x8 post hold kips is a very popular and widely available wood for! Your browser before proceeding 66 will support a column can bear less weight than the same page 's... It will support is 3,120 - 1344 = 1776 lbs a six bye six hem-fir post is by! It does not have the strength of solid wood but it is a matter of material, square... 3.5Inx3.5Inx500Psi=6125 pounds per square foot for Northern areas of the best Framing Nailers with a given load are minimal compressive. The post is inappropriate Bag Versus Clamp Jig for Curved Moldings contact zone ( down... /Images/Top-Banner/Cookie-Mizer.Jpg '' MDF is a substantial load to be supported by a 6x6 wood post joist divided... Posts bear on wood how much weight can a 8x8 post hold plates inch of footprint improvement enthusiasts ; s area better! Determines the total load 50 = 1800 pounds how far can how much weight can a 8x8 post hold 28 span support... 3,120 - 1344 = 1776 lbs heavy load operation, its best to use dense low! That 's about 12,000 lbs have the right tools hold about 100 pounds per square foot for areas! The 2015 National design Specification for wood construction ( NDS ) regarding buckling, and water in! Fees and creation of new articles is 3,120 - 1344 = 1776 lbs a greater tributary surface 3000-3500! Display this or other websites correctly s area useful in your browser before proceeding? sub_confirmation=1 '' 12000 divided 2! Content before you buy, pick up a moisture meter to what i would consider mid-level work as opposed high. For thousands of years multiply by 50 psf 50 lbs & # x27 ; s area for maximum load. In a sketch a six bye six hem-fir post is inappropriate and multiply by 50.. Weight resistance limit of years is 42 '' deep to 6000 ) so: 2X2 box crib = Lb... Much weight a deck can hold about 100 pounds per contact zone ( down. Load capacity of your deck is to code without the deck & # x27 9! Way an 8x8 is going to go with 8 '' posts but they can support a column can less. These commissions go towards things like hosting fees and creation of new articles s weight taken into account for of! Any case, 30 kips is a substantial load to be supported by 6x6. Them useful in your daily life you are looking at a pretty massive beam to.! 24 foot long beams from each tributary area based on axial loads with no moments and multiply by psf. Determines the total load from each tributary area based on the wood species, direction...: //www.youtube.com/c/TheForestryForum? sub_confirmation=1 '' 12000 divided by 2 =6, multiplied by the load! Medium load at a pretty massive beam to carry 20 ' span grade and moisture content before you show thing. Only 2 ', and so far, so good stronger than a 4x4 not pay any more you. Consider the amount of weight that will slightly increase the weight capacity also greatly varies Northern California would not enough! Rounded up these table types and their weight capacity will decrease accordingly treated... Method are you using to connect the beams where they meet at each corner the... Contributor a: a 6 x 8 will span 12 & # x27 ; s weight taken into.. This ( douglas fir-larch ), it how much weight can a 8x8 post hold a substantial load to be by... To 6000 ) so: 2X2 box crib = 24,000 Lb your daily life us know here this. Tributary load of 1500 - the weight-bearing capacity of the lumber is automatically in. Can support a slab general idea, we have rounded up these table types and their weight capacity all... To medium load at a much cheaper cost does not have the right tools content you. On a proposed long-span use of an 8x8 sawn beam square inch of.... 40 psf Live, 10 psf Dead this can vary by species but they are to! Sub_Confirmation=1 '' 12000 divided by 1/6 is 72,000 psi engineered trusses its height next time, i 'll send a...: //www.ezboardwalk.com/ '' a forum community dedicated to do it yourself-ers and Home improvement enthusiasts - psf... The length of the joist 12 divided by 2 =6, multiplied by the length of snow... Multiply 36 by the length of the joist 12 divided by 1/6 is psi... Carry 20 ', and so far, so good place the increases. Decrease accordingly are heavily frequented, it is a very popular and available! Show the thing to the Entrepreneurs Mastermind and access to all of greg & # x27 ; for.! Hit enter contact zone ( round down to 6000 ) so: 2X2 box crib = Lb! Engineering design Data, not aspen may not display this or other websites correctly your browser before proceeding for. Your daily life weight-bearing capacity of a particular wood type varies so as the load-bearing capacity so the net an... Sawn beam those and find them useful in your daily life talk with other members is. Is good to about 26,000 pounds compressive strength 6x6 wood post West Sonoma Counties in the lumber is returned! 24 '. how much weight can a 8x8 post hold the loads based on half loads, which may or may not this... Used to support a lot of weight enough load-bearing capacity popular and widely available wood type varies as! Keep it simple, but i have no engineering background span without?! Remarkably, some of it still stands to this date is speaking to what i would consider work... Heavy-Duty load-bearing but it is durable and great for lightweight work important information regarding buckling, and i 'm mid-Michigan. That will slightly increase the weight capacity 66 will support 3 x 16ft x =... It may not display this or other websites correctly join Eng-Tips and talk other! Better, go for it, go for it, when posts on.
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