The span of a beam is dependent on a few variables. Try this span length calculator. I am planning on using 6" x 6" x 12' posts set in concrete. I am sketching a plan for a pergola to build over my QT area, and have been searching for a chart on how much weight a 2x6 or 2x8, or 2x10 can carry for various spans between posts. We also use third-party cookies that help us analyze and understand how you use this website. is 8'-9" too far of a pergola beam span with doubled up 2x10's...this measurement is based off off 14' span with 3' knee beaces on each side..i dont want any beam sag... AndrewNJ 09:27AM | 06/26/20 and it will give the maximum span length. But opting out of some of these cookies may have an effect on your browsing experience. These cookies will be stored in your browser only with your consent. Ideas, thoughts? Plastic and steel are very light, the bigger the rafter the heavier the whole roof becomes. The material will be pressure treated pine. I would like to cover a concrete patio we have with a pergola, however I would need to span 27 1/2 feet. Have you thought about 8mm twin-wall polycarbonate sheets? This category only includes cookies that ensures basic functionalities and security features of the website. This website uses cookies to improve your experience. check out the. is it possible to have overhang? Does anyone here know the calculations that would need to be done to use a beam in the shape of an arc? I would like to cover a concrete patio we have with a pergola, however I would need to span 27 1/2 feet. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. If I am unable to span such a long distance, I can always do two triangular corner pergolas, but we won't get full coverage. Is the deflection the maximum amount of flex ? I don't want to drop a post in the middle of it though. ?, grade 2?? Does anyone here know the calculations that would need to be done to use a beam in the shape of an arc? The span between the post with the double 2x8 beams are longer (13') than the other direction (11'), so figure the larger boards should span the longer distance. You also have the option to opt-out of these cookies. I appreciate all the input. Please select a category to choose from: -, http://www.awc.org/calculators/span/...rcalcstyle.asp, Beginners Guide To Ponding and Forum Useage, Important Links to Koi Health Care Information, Please Judge this Koi - Warning! Is it even possible? I will post a pic of what I have along with a drawing of what I envision if I can. All times are GMT-5. Did you seal that with a transparent sealer or what? http://www.awc.org/codes-standards/c...tware/spancalc. Like for a span of 240", it will only flex 1" ? Sounds like a question for an engineer practicing in your area, or at least a chat with your local building inspector. Sorry... nice looking pergola you got there Charles.

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