From contributor A: A 6 x 8 will span 12' for flooring. Therefore a post to support this built-up floor beam will need to be 6" by 6". KD-19 (Kiln Dried 19%) lumber will have an average moisture content somewhere around 15%. var imagelinks2=new Array() In this example, 28 sf falls under the 36. If a particular species of wood can support 1,000 psi, then an 88 post can hold 64,000 pounds! A few examples of these are shown in the picture above.Whitewood Lumber. now Let's find the tributary areas of a deck. However, I cheated 35 yrs ago and put my deck posts down only 2', and so far, so good. Down the road, I'd like to know what load these logs will carry, if properly supported and properly braced against lateral deflection. I want to have a 10' clear height for a room, so I'll be walking around some naked (unsupported) posts. Although Cedar is on the bottom of our list, they are still very suitable for furniture, fences, decks, and other general carpentry. Close this window and log in. 6X6 equation: 5.5inX5.5inX500=15,125 Lb/contact (round down to 15,000) 2x2 =. random_imglink() Considerably Higher Load Capacity Than Traditional Posts. The side beam allowable download is 1,170 lb. If it is a complex design, focus on the geometry of the structure. I could not tell how wide the garage is, perhaps 14 feet or so? Is the 30 kip load Dead and Live load? This is a crucial detail for a wooden structure to be practical and safe to use. Stee: It sometimes takes me a while, but I can usually get it all explained clearly. spacing to meet the 50 psf design load. Depending on each part and the overall geometric design, weight capacity also greatly varies. Typically, a deck can hold a minimum of 50 pounds per square foot. These commissions go towards things like hosting fees and creation of new articles. Deck post sizes - 40 psf Live, 10 psf Dead. Seems you've got a pretty good idea what you're up to. Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. PrivacyPolicy, T = Bearing Length (post thickness) Allowable wood stress in compression parallel to grain is 850 PSI. myimages2[1]="../../../images/top-banner/behindtheforum.jpg" Loads must be concentrically distributed evenly over the top of the column shaft. 12000 divided by 1/6 is 72,000 psi. 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. Wood used for furniture and for appearance is often of a hardwood (or Pine) variety. What Size Nail Gun For Fence Pickets - Choose The Right One. Then you show a "2x10x12 double" as the outside beam. Over 200+ free JavaScripts here! One year of on demand One on One coaching and mentorship directly with Greg Dickerson via Zoom, phone, email, text Monday-Friday between the hours of 8am-5pm EST. So, I'd figure on using four 55 gallon barrels just to support the weight of the floating pier. ft)= beam spacing x post spacing. Sponsored Links. Next time, I'll send in a sketch. Yes, for beams, the load capacity is inversely proportional to the cube of the span. As the cell structure of a particular wood type varies so as the load-bearing capacity. Sorry about that. For a better experience, please enable JavaScript in your browser before proceeding. / 203 KG) Polaris 800 PRO-RMK 163 (408 lbs. At 6 feet, it's 10,000lbs. 49.02. if you want beefier you can just build it up and clad it. The most common species of dimensional building lumber (e.g. 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. One thing to keep in mind, as the length of the stud increases, the weight capacity will decrease accordingly. If frost gets below your footers you will have some real problems. Is there some reason you are using two different lengths of ledger/beams running parallel to each other? Shorter lengths can support more weight. A well-built MDF shelf can hold between 50-80 pounds of weight. 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. As for unsupported, yes, if I have my nomenclature correct. Enter the moisture content in the calculator and hit enter. We have received your request and will respond promptly. However, the post will typically buckle under much lower load than the axial compression. ry=1 What Type Of Wood Can Hold The Most Weight? If it is stamped "stud" it will be strong enough. } Here it is, 0100 hrs, and I'm reading this book. The higher your deck is off the ground, however, the less weight per square foot it can take. However, an 8-foot 44 supports 6468-pounds and 2339-pounds at 14-feet, while a 66 is 18032 and 10550-pounds respectively - or 64% and 78% more load capacity. / 196 KG) Polaris 600 Switchback PRO-S (447 lbs. One thing to keep in mind, as the length of the stud increases, the weight capacity will decrease accordingly. Description 8 x 8 timbers are sturdy and heavy-duty. If I read what I googled correctly the diameter of a round post needs to be 6/5 or 1.2 times larger than the side of an equivalent square post. Post heights are based on standard precut stud heights and associated top plate heights. What method are you using to connect the beams where they meet at each corner? Glued and screwed) That is stronger than a 4x4. Allowable wood stress in compression parallel to grain is 850 PSI. 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? As has been mentioned, there is simply no way an 8x8 is going to carry 20', even carrying its own weight. IF I am looking at your drawing correctly, you have a "2x10x16 single" as the ledger against the house. //specify corresponding links below All load capacities are based on axial loads with no moments. How long can a span be without support? //-->,