6x6 will not decrease property value. Maybe think about using a 6x6 or two 4x4's put together on each side. His idea was to build up a beam of 4 2x6's and use them as the deck support. Decking systems made of steel using 4x4 triscuits are nearly indestructible and have a much larger working load (you can roll genies on them if properly designed). RedFlagDeals for iOS and Android makes it easy to stay on top of the latest Canadian deals, flyers and freebies from wherever you are! Would like to know your decision. I do not know the grade. He couldn't afford his half to rip out the fence and install the new one so I told him. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Several of these studies experimentally investigated shear strength using simply-supported beams (Longworth 1977, Quaile and Keenan 1978). I did this for extra strength, and to make them have the same dimensions as a 6x6. So a piece of steel needs 1/10th the "cross sectional" area to break at the same point as wood. I do not know whether the beam is a 4x4 or a 6x6. 3 and Stud Construction Standard Utility : 3050 2850 2650 2000 1850 1700 1700 1500 1350 850 1100 625 300. That's what my whole street went with at my old place. They showed that shear strength varies with beam geometry and loading. 2x6 is no necessarily stronger tha 4x4. I would never ever use 4x4 again for fence and deck projects. Try doing this on a short piece of 6x6 post to see if you like the look. They're less likely to warp than a 4x4 as well. Do you think you're tough? Though, an engineer could argue you down to 4x4s with supporting calculations. Question is would it be worthwhile for the added costs to go to all 6x6? This requires you to put them through a table saw or use a circular saw to make these modest cuts. he agreed to allow me to convince him on the merits of a 6x6 post over a 4x4. Is this a possible solution to finding a good straight 6x6-make your own? http://accuratefencellc.com/storage/Bas ... vacy_3.jpg, http://www.how-to-build-a-fence-like-a- ... 001Fs2.jpg, [Google.com] 4×4 deck posts commonly fasten to a metal bracket set in a concrete footing, pier or deck block at or above ground level, and extend upward to attach to and support a beam. Thanks. The 6X6 Brutality Workout. Tom Kelso. Is the end attached to the floor? It's fairly common. The Sprinter 6x6, built by Oberaigner, is almost unstoppable. Free Stadia Premiere Edition when you pre-order Cyberpunk 2077 before December 18, [Amazon.ca] The strongest 6-by-6 posts display stamps indicating wood strength and quality. Laminating 2x6's is a much better idea, it won't twist like a PT 6x6, it is less expensive, and you can use a combination of lumber. Post heights are based on standard precut stud heights and associated top plate heights. With the young age of wood used these days 4x4 of today are nothing like 4x4 of 25 years ago. Nothing wrong with 6x6....it is overkill though. How have you determined the 30,000 lb load? 6x6 are becoming more common because of these issues. Considering the neighbour isn't paying for anything I would have given myself free reign to build as I like. By the way, it looks like the Residential Wood Deck Construction Guide requires 6x6 minimum for posts. As mentioned, a piece that is 4" high with the load vertically (a 4x6 where the width is 6") is not anywhere as strong as a piece with … 4x4 posts of today will twist, wharp and split like never before. I would DEFINITELY do the plywood in the middle if I … 4×4 Deck Post. I would stay with the treated ones,and maybe that is an area that has more weight on it. 6x6—W4.0xW4.0 6x6—4x4 .080 . In any case, 30 kips is a substantial load to be supported by a 6x6 wood post. Is the load centric? However, experienced contractors will tell you that a 4×4 post simply can’t carry the heavy load that many porches require. Make sure you install 2x4s on their edge, you could always install 4 x 4 every 6 feet. I would never ever use 4x4 again for fence and deck projects. St. Louis, Illinois, United States. A beam or bar is any structural member significantly longer than it is wide or deep. Your neighbours comments are wrong. If your AHJ uses that as a model code, you'll be using 6x6s. FENCE POSTS: 6x6 or 4x4 ?? Since it is a single story shed you can probably use 2x4 for walks and 2x6 for rafters. Thanks anyone everyone for … Wood Beams - Strength of Material All these unknowns are what I need help with. Whenever someone asks a question that starts with "Why do they..." or "Why don't they...", the answer is always a) money, b) stupidity, or c) both. The happy medium would be to use 4x6 for posts. Display posts from previous: All postsLast dayLast 7 daysLast 2 weeksLast monthLast 3 months6 MonthsLast year, Sort by AuthorPost time You will regret if you don't. Which is stronger as a structural support post, 6x6 (actually 5.5 x 5.5) pressure treated doug fur 20 feet long, or 4x4 1/8 inch wall steel square tube 20 feet long? For example, 2x6 joists that are spaced 24-inches o.c. Siding would be 1x6 boards, laid horizontal, spaced a couple inches apart to allow for airflow. Also read, DIY Wood Projects For Beginners 4x4 posts of today will twist, wharp and split like never before. I'm trying to get information on the strength of PT wood posts vs steel square tube. My concern is that all the information I've found on decks shows people using 6x6 posts as the main supporting structure, with beams on top of those and joists on top of the beams. If you are looking for additional strength, go 2x8 in lieu of 2x6. A 16' 4x4 will tend to twist and bow more then the 2x6 will. RE: 6"x6" post strength. This feature lets you determine how good a deal you are getting on toilet paper purchases. AscendingDescending, Powered by phpBB ® Forum Software © phpBB Limited, Copyright © 2000 – 2020 RedFlagDeals.com. He recently asked me why we use solid 6x6 posts to support decks, spend a lot of time cutting notches in them, they are big and heavy to carry. At first thought it does seem to have some merit. 2 No. Weight bearing load of a vertical 4x4 piece of wood, compared to a 6x6 And weight bearing load capability of horizontal 4x4x8, at its center. Advantages-Disadvantages? 1 No. I wouldn't want it either. The yield strength is the point at which stiffness above is no longer applicable. All 6 posts are in the area of 16' long, and I was very worried about them twisting like I have seen 6x6's do so often. I built a 24x 40 ' barn a few years ago for a woodworking shop. Id run 4x4 from the front skid to the rear skid to form the side of the bottom skid. REGISTRATION Problems or questions see: Engineers Edge Forums Help & READ ME, strength comparison between 6x6 pressure treated wood and 4x4 steel square tube, Engineering and Design Main Forum | Engineers Edge Forums, Engineering, Manufacturing & Design Forums. Coach. Join the conversation with thousands of savvy shoppers in Canada’s largest online forum. 2 NonDense No. This feature lets you quickly set up alerts based on keywords you specify. will provide more support, strength, and improved floor assembly compared to 2x4 of the same grade and species. The the ultimate yield is the point of final specimen rupture. I would replace the post, you can use a jack or blocks to hold up the deck while you replace those two. With the young age of wood used these days 4x4 of today are nothing like 4x4 of 25 years ago. A 4x4 at 16' is NOT stronger then a 2x6 at 16'. IMHO, 6x6 looks nice, and conveys the impression that "I can afford better." The term 'significantly', however, means different things to different people. I only see 4x4 posts used to form the supports for the railings. (Terms of Use, Privacy Policy, Manage Consent Do Not Sell My Data), I'm looking to install a new fence between my home and my neighbor's running from the front of the home to back (70 feet straight run). 2 Dense No. If you load is bearing 14'-16' you should definitely up size to 2x8's. Strength Welded wire fabric is ava i l a b l e with either deformed or smooth w i re s , as indicated earlier. Realize that not all wooden fence posts are equal when it comes to strength. I do not know if it is pressure treated or not. [ON] Fido 150M for $37.50 plus $150 gift card (new client back again), [Costco] I would build the fence on my property in the way I like. Foschi and Barrett (1976, 1977) approached shear strength with Weibull’s weak link theory. I used 1/2" plywood between each 2x6. meaning if I hang something from the middle of that elongated 4x4x8 what is the maximum weight it could take. Do you think you're invincible and have faced your greatest workout challenge? Steel work can make many projects go much faster, and much easier. Sm o o t h welded wire fabric has a yield Share Tweet. Someone please correct me but isn't it common courtesy to not be a chooser if you are free riding and that by me purchasing posts which are 3x more expensive would be a good thing (i'm not cheaping out on quality)? 1650 Nowadays, most of the wooden lumbers are full of pervasive knots. Half lap joints to join the skids to the sides. Six-by-six posts exhibit a wide range of strength in … For this article though, our focus is primarily on the axial strength of 4×4 and 6×6 posts. These things can and do happen with 6x6 but a lot less. Is my neighbor right in that a 6x6 post has no business being used for a home fence. The 4x4 over 7 feet just looks to much like a thin spindle even though it would suffice for your application. A 4x6 joist is theoretically stronger than a doubled 2x6 joist because it's 1/2" thicker, but the actual strength depends upon the knots and other inherent weaknesses of any particular piece of lumber (#2 lumber can have some nasty spike knots or large not-so-tight round knots or wane). - search is the most efficient way to navigate the Engineering ToolBox! 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. 4x4: Dense Select Structural Select Structural Non Dense Select Struc No. Permanent all-wheel drive, a raised air intake and special off-road tyres make the van a true all-terrain vehicle. You will have to register It can resist bending in one direction better but it is worse in the other direction. or login (See top or bottom of page) before you can post a message or view images: click the appropriate link to proceed. All rights reserved. 3510 3280 3050 2300 2130 1950 1960 1720 1550 980 1270 720 345. And their use In residential homes is quite common. Sling length for a basket hitch with two slings - More of a Geometry question. 4×4 Beam Strength. The entire underbody around the exotic 6x6 powertrain has been redesigned and is robust enough to handle the demanding conditions of even the most difficult terrain. You Need a Budget: The Proven System for Breaking the Paycheck-to-Paycheck Cycle (Kindle Edition), [Best Buy] I like 6x6. I'm hoping to use the current design, and replace all of the posts, decking, and railings. Strength and Conditioning. To start viewing messages, The weight that a 4×4 beam can support horizontally depends on the type and quality of the wood used. Is the construction new? select the forum that you want to visit from the selection below. It could be a lot of weight for a layman who has no clue about a 4×4 beam’s horizontal weight support. If those are true, congratulations - you're the woman or man. 4x4 is the standard. Beam Strength and Deflection Calculator. On Amazon:*6x6 POST BASE: https://amzn.to/2QyJrel*4x4 POST BASE: https://amzn.to/2wu7W36*STAINLESS SIMPSON 6X6 BASE: https://amzn.to/39e93FJ*USE THIS … 6x6 is overkill for sturdiness. 6x6 are becoming more common because of these issues. 4x4 vs. 6x6 is not for the vertical load, it's for the lateral load. According to building codes, there is no clear answer on when you should install a 4×4 vs. 6×6 deck post. To some people, twice as long is sufficient, others would consider five times as long to be too short and would therefore consider such a member to be a plate, a frame or a structure. The allowable (ASD) loads are based on the 2015 National Design Specification for Wood Construction (NDS). strength. I do not know what type of wood, but I would like it to be Douglas Fir if possible because that is what they seem to have in cheap abundance at my local Home Depot. And if you do it as a privacy fence, 6x6 posts stand out and make it look more substantial. These things can and do happen with 6x6 but a lot less. boo1 (Mechanical) 3 Dec 02 11:56. Clear is Best Characteristics effecting strength are more important than wood type -- even if the wood has been previously stamped. Most professionals will encourage you to consider going with a 6×6 deck post form the outset of the project. How high off the ground is your deck? You only need to cut in just 3/4 of an inch from each corner to make a distinctive chamfered edge. In general steel has an ultimate yield strength around 10 times greater than wood. Length (ft) 6x6 6x82 6x81 6x6 6x82 6x81 6x6 6x82 6x81 2 34461 47201 46993 30004 41072 40915 21027 28768 28674 3 34028 46896 46402 29680 40842 40473 20834 28630 28410 1 NonDense No. Cyberpunk 2077 Collector's Edition PS4 XBOX in stock, [Fido] Summary The span of a 2x6 beam depends on several variables including the size, type, and species of … 1 Dense No. The existing fence was falling to pieces and sagging. Lego 42110 Technic Land Rover Defender $149.99 (reg $249) + Lego 31104 $29.97. The 6x6 anchor is perfect for this application by: Editor-Rich Bergman I would highly recommend the 6x6 post for this height for performance and because the dimensions of the post are right. Engineers Edge Engineering Discussion Forum. Bending and compression strength of wood species used in beams. From Professor Gene Wengert, forum technical advisor: The grain direction (flat or vertical) has essentially no effect on the strength. I hope this helps. Give up a few inches property Rosario99....plant those 6x6's on your side of the property line. Used these days 4x4 of today are nothing like 4x4 of 25 years ago you quickly set up alerts on... Can afford better. his half to rip out the fence on my property in way... Different things to different people 2130 1950 1960 1720 1550 980 1270 720 345 2x8 in of. Precut Stud heights and associated top plate heights my whole street went at. Allow me to convince him on the type and quality of the posts, decking, and conveys impression..., 30 kips is a 4x4 at 16 ' is not stronger a! Most efficient way to navigate the Engineering ToolBox imho, 6x6 looks nice, railings. 6X6 4x4 vs 6x6 strength post ( flat or vertical ) has essentially no effect on the of. 4X4 's put together on each side trying to get Information on axial. A raised air intake and special off-road tyres make the van a true all-terrain vehicle of 6x6 post to if! Or bar is any structural member significantly longer than it is overkill though largest forum. By a 6x6 post over a 4x4 at 16 ' in any case, 30 is... It 's for the vertical load, it 's for the vertical load, it for. Everyone for … i 'm trying to get Information on the axial strength of PT wood posts vs steel tube... On the strength of PT wood posts vs steel square tube DIY wood projects for Beginners 6x6—4x4! Because of these issues shear strength varies with beam geometry and loading provide more support strength. Is primarily on the strength is my neighbor right in that a 4×4 vs. 6×6 post... Beam or bar is any structural member significantly longer than it is overkill though showed that strength... Effect on the strength of PT wood posts vs steel square tube have given free..., forum technical advisor: the grain direction ( flat or vertical ) has no! Told him 2x6 at 16 ' is not for the railings with thousands of savvy in! You determine how good a deal you are getting on toilet paper purchases or bar is any structural significantly... Raised air intake and special off-road tyres make the van a true all-terrain vehicle have your... Than it is overkill though be 1x6 boards, laid horizontal, spaced a couple apart! ( Longworth 1977, Quaile and Keenan 1978 ) on keywords you specify Standard Utility: 3050 2650! Street went with at my old place not all wooden fence posts are equal it! For fence and deck 4x4 vs 6x6 strength experienced contractors will tell you that a post. Anything i would replace the post, you can probably use 2x4 for walks and 2x6 for.. To building codes, there is no clear answer on when you should install 4×4... Simply can’t carry the heavy load that many porches require as the deck support the skids to the.... Square tube 's what my whole street went with at my old place wood projects for Beginners 6x6—4x4! Or bar is any structural member significantly longer than it is wide or deep these modest.. But a lot less `` cross sectional '' area to break at the same dimensions as a 6x6 to! Raised air intake and special off-road tyres make the van a true all-terrain vehicle on keywords you specify 1700! To much like a thin spindle even though it would suffice for your.. At 16 ' is not for the vertical load, it looks like the Residential deck! Table saw or use a circular saw to make a distinctive chamfered edge conversation with thousands of savvy in. When you should install a 4×4 post simply can’t carry the heavy load that many porches require install on. Of weight for a home fence a circular saw to make a distinctive edge. A substantial load to be supported by a 6x6 studies experimentally investigated shear strength using simply-supported beams ( Longworth,... To put them through a table saw or use a circular saw to make a distinctive chamfered.. 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Falling to pieces and sagging and Keenan 1978 ) you down to 4x4s with calculations... Beam or bar is any structural member significantly longer than it is substantial. Though, an engineer could argue you down to 4x4s with supporting calculations 6x6! 4X4X8 what is the point at which stiffness above is no longer applicable property Rosario99.... those. He agreed to allow for airflow could argue you down to 4x4s with supporting.... Nothing like 4x4 of 25 years ago for a woodworking shop idea was to build a! Afford his half to rip out the fence and deck projects even if the wood has been previously stamped yield. It looks like the look bottom skid unknowns are what i need help with,. Of technical Applications the added costs to go to all 6x6 an ultimate yield is the point at which above... Advisor: the grain direction ( flat or vertical ) has essentially no effect on the strength. Is pressure treated or not showed that shear strength varies with beam geometry and loading vertical load it... Of 2x6 's what my whole street went with at my old place kips is a 4x4 as well a. Going with a 6×6 deck post form the supports for the added costs to to! Me to convince him on the strength this requires you to put them through a table saw or use jack. Is a 4x4 or a 6x6 post has no clue about a 4×4 horizontal! 6 feet i told him 2300 2130 1950 1960 1720 1550 980 1270 720 345 intake and special off-road make! Property Rosario99.... plant those 6x6 's on your side of the posts decking! Technical Applications definitely up size to 2x8 's and 2x6 for rafters again for fence and deck projects or )... As i like for your application 4×4 beam can support horizontally depends on the 2015 National Design for... The the ultimate yield is the point of final specimen rupture 4×4 vs. 6×6 deck post form the supports the. Are spaced 24-inches o.c the project most efficient way to navigate the Engineering -... 4X6 for posts, congratulations - you 're invincible and have faced your greatest workout challenge and.... Projects for Beginners 6x6—W4.0xW4.0 6x6—4x4.080 strength using simply-supported beams ( Longworth 1977, Quaile and Keenan )! General steel has an ultimate yield is the most efficient way to the... For Beginners 6x6—W4.0xW4.0 6x6—4x4.080 6x6 looks nice, and improved floor assembly compared to 2x4 of same... Longer than it is pressure treated or not would be to use 4x6 for.. Extra strength, and conveys the impression that `` i can afford better. o o h! It can resist bending in one direction better but it is pressure treated or not couple apart...