A Few Ideas For Making A Four Post Structure Like A Carport Structurally Stronger

[tankscrittersandurbanhomes]

I've found simply adding lattice from the roof line down 2-4 ft depending on height makes them so much stronger. It maintains the open feel and still adds strength and protects the cars better.

[yanbu]

I'm collaborating with a project manager and a construction contractor in Eastern Europe on a carport project similar to the one in your drawing. It's made entirely of box steel columns and joists, with columns securely embedded in concrete footings. During a windy spell reaching 50 mph, I noticed some structural sway when we were on the roof, which is currently plywood. In a light-hearted moment, I exaggerated the swaying by pretending to surf. However, the seriousness of the issue became apparent to me, though not everyone found it amusing. Despite initial reservations from the project manager and contractor, I firmly believe diagonal bracing is necessary for added stability, especially without solid walls. These braces will be positioned at 45-degree angles and adequately spaced between joist columns to ensure rigidity. Would love to hear any comments...

[johnneyland]

Great video and tips for better buildings!! Thank you !

[preston]

Perfect video for a job I have coming up. Customer wants a carport like this to match their house. I think I’ll go the steel post route.

[durangodave]

I noticed that it does not have a ledger board all the way around it on 4 sides. Also would it make it stronger using a 2x6 half way down the beams to keep it from swaying, or even half wall on 2 sides. Even using 4x6 rather than 4x4 for posts, and using rebar in the concrete that goes through the 4x6. But i think one of the biggest things is just to tie the 4 legs as one with a beam on 3 sides and then a header across the entrance. Do all of these sound good to you? I will be building mine this summer, 20ft long and 10 ft wide. With 3 4x6 on each site, and just a medal roof over the rafters. I was going to use plywood at first to tie the roof together but i decided it was not necessary since i am going to have vents in the top so that wind will vent and not build lift. I will also have a steel cable that goes from a hook on each concrete footer, over the top and down to another hook on the other side just to help keep the wind from lifting it.

[dalekrohse]

In my experience, a lot of torsional strength (resistance to twisting) can be achieved with two steel cables each with a heavy duty turnbuckle attached to diagonal posts. So, from the near side left front to the far side right rear and another cable from the right front post to the left rear post. Locate the cable attachments a few inches below the beam level. Placing a good amount of tension in the cables will reduce the "play" before the cable begins resisting the twisting action. A tension member like the cable provides a lot of strength at modest cost and simplicity. Thanks for making this helpful video.

[raulakh]

Very informative video, I just made a structure like that on the top of my deck, I added the 3 ft railing on each side of the length and once side half wall framed for the support but I added the plywood to the braces on both side for the rigdity. I guess it should hold it well

[OffGrit]

After building quite a bit of structures off grid in the desert, I have learned that you really can't beat steel embedded in concrete.... with wood I use an asphalt emulsion and then coat with elastomeric coat. In addition will drive either rebar spikes or longer lag screws angled into the wood diagonal before pouring the concrete to help anchor in place. I live in high desert in AZ and it is very windy here....

[Sergeant]

Great idea, I like the channel idea, with that knowledge you don’t need an Engineer Sir.👍

[JJCGCAZ]

Thank you for all the information Sr, has been a great help!!👍🏽

[SteveP-vmuc]

We have many parks here in Florida that have building like this with picnic tables under them. The posts are normally ate least 8x8 and all fasteners are through bolts with nuts and fancy iron plates on each side. Really beautiful, but I bet the plates are really expensive.

[anonimoporsiempre]

Thank you very much for your time it helps a lot 👍🏼👍🏼🤝🏼

[lorajefferson]

I need to straighten up my 10x20 similar building. I need some ideas on how to do this? Would a come a long work better than pushing with a bobcat?

[javamochafrap]

Good video on preventing posts from flying away. How about another video on preventing roof from being lifted and taken off?

[watr]

Great info, thank you for sharing. What are your thoughts on a 10 x 12 pergola with footings anchored into a 14 x 14' buckets full of concrete that would sit on a floating deck. (Looking to avoid having to dig soil underneath + below frostline) Thoughts on using your suggestion of bracing or post running through the concrete to strengthen. Thanks for your time!

[andycremeans]

Can you design me a class-A RV shelter but with the roof as a floor for a second floor tiny house?

[TrogdorBurninor]

A little diagonal bracing between the roof beam and the column one foot below where it meets the roof seems like it would do a lot in the X direction, and a little more that goes up to one of the rafters, for the Y direction.

[EnricoMarino]

Would it matter if the building is about 5 ft long by 8 ft wide with heigh of about 9.5 ft.? I plan on building a small one on a concrete slab. I figure if its smaller it would be more stable.

[javamochafrap]

This design looks like a portico i am building. Any suggestions to make it sturdier? Attach to house or add concrete posts to concrete deck with screws?

[RobsReviews]

Would adding Loctite to those bolts for the anchors help them?