A Few Ideas For Making A Four Post Structure Like A Carport Structurally Stronger
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- čas přidán 29. 08. 2024
- www.homebuildin... Click on this link for more information about your next home building and repair project. This video will provide you with a few ideas that can be used to make a carport or structure with a roof supported by only four individual posts a little stronger. Remember, these are only design and construction suggestions and local building authorities or structural engineers might need to be involved when building these types of projects.
Guess I'll be through-bolting my footers instead of just nailing therm, and adding shear walls or something similar sooner than expected. I always build beyond code but this video showed the vulnerabilities of the structure im currently building and how to easily correct them. Pretty dang good video.
Glad you liked it and these structures are tough to stabilize with out the right post base connectors.
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.
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.
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....
thanks for the variety of ideas
Most welcome 😊
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...
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.
Yes, they sound like they're going to be structurally sound. Strong structures often have something to do with spending more money.
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
Great idea,I like the channel idea, with that knowledge you don’t need an Engineer Sir.👍
Right on
Good video on preventing posts from flying away. How about another video on preventing roof from being lifted and taken off?
Thank you for all the information Sr, has been a great help!!👍🏽
You are welcome.
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.
Yes, that would definitely be an improvement, as long as everything will tie together. Sometimes is difficult to create some type of X bracing design without notching the braces to create a flat brace instead of one that laps over each other.
Thank you very good information.
You are welcome
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.
Thanks for this video
I made mine with 4 walls. But now I can’t get my car in 🚘
Bummer
Maybe you should of put the car inside before you built the four walls
Thank you very much for your time it helps a lot 👍🏼👍🏼🤝🏼
Happy to help
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?
It would depend on the size of the building, but either would be a good place to start.
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?
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.
Oil rigs drill pipe better option for legs posts
Thank you
You're welcome
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!
If you add more weight, it will be transferring down through the framing to the existing footings that might need to be larger.
Can you design me a class-A RV shelter but with the roof as a floor for a second floor tiny house?
Can the concrete squares or cinder blocks be used to support 4 x 4 post for a freestanding screen porch? Thank you in advance
It can sometimes, but I would use a footing.
@@gregvancom thank you so for the response.
Can you do a video on deck railing posts comparing notched posts and other methods. Also do a video on decks with rim joists directly connected to the post without any mechanical fasteners to increase sheer strength
I will definitely put your video suggestion on our list of videos to be made in the future. Could you send me some pictures of what type of design ideas to be used in the video and you can get our email address at our website.
I am plywood gussets around all four corners all the way up under the joist from front to back of the building hot galvanized nails or screws and glued. Structure becomes a stiff as a concrete block
Another good idea.
What about using 6x6 posts instead?
I have seen diagonal rods or cable but the best is shear panels..
I think it would depend upon the structure. For example there's no place to put your panel on a four post structure like the one shown in the video, but add a few walls and you're right on the money.
use 6 by 6 es use joinery and ad 2 4 by 6 cross members add sheeting above. the metal straps suck unless they are very thick. drop the posts into the piers
Always great informative videos.
Have you ever used those ground stakes for 4X4, commonly used for fences or mail boxes.. oz-post, or Simpson ez stake, I want to try to use it to mount a security light on a 12' post and a second ground stake next it 6' high for support w 2x4's connecting the two...
I think you can try it and if it doesn't work, you can always pour a footing. In my opinion, it will depend on the soil and weather. Areas where it rains and snows a lot or sandy soil could made the ground loose.
I have a similar situation. Think I’ll add some shear walls.
Exactly!
What about lattice + braided cable/turnbuckles?
So one this I've been trying to research steel posts. What is the strength difference doing a post through concrete vs using a base with studs and bolting/welding the post to a base embedded in concrete.
I'm not an engineer, so won't be much help. If I was to guess, bolting it to some heavy duty anchor bolts might be strong enough and steel buried in concrete might suffer from corrosion and over time lose strength.
@@gregvancom Your videos have been very helpful! I appreciate your response and your content. Thanks
How many poles do u think I need to hold up a 40 x 23 Patio cover I’m going to do it from steel ?
I would check with a structural engineer in your area.
I'm doing a 36x18 and I have ten wooden 6x6 posts for charlotte, nc area in clay soil with 30x30x18" footers and 10 pieces of 1/2" rebar 24" long in the bottom of each one.
We build a car port that's 16×20 and it moves side to side how could I brase it
Would consider top corner braces
Would adding Loctite to those bolts for the anchors help them?
as I watch the video iv had a few of these ideas like the pipe and the angle iron. I guess common sense works sometimes
You could try and let us know if it works. I've never tried it.
I did heavy duty steel in deep concrete and it still wobbles badly. Think I need a middle post or walls.
Bummer and more bracing or posts might help.
im curious because im a build a huge carport for my driveway and also use it for parties and stuff. Which method would you say would hold the posts stronger? Putting the posts underground and covering them with cement or putting them over the cement? i personally dont like the first method of just placing them over the cement i feel like it wont hold i rather use the brace method but any and all helpful advice is welcomed.
My main concern about embedding a wood post in a large concrete footing is when or if it ever rots. Other than that it would be structurally stronger. I would strongly suggest checking with your local building department to verify what process they think will work best.
@@gregvancom I was planning on burying the post and putting that cover they sell at home depot that protects from rotting then adding the cement
@@robertoperez4162 bitumen paint will help a shipload but stirrups are still ok along as there is adequate bracing.
I can't seem to find where on your site it has the model you are showing in your video.
try this link - www.homebuildingandrepairs.com/outdoors/index.html
Would simply adding one additional post on 3 of the 4 sides make it much stronger? For instance, having the entrance side with 2 posts but the other 3 sides with one more post in the middle?
It would depend upon the design of the structure, but you're on the right track. Most of the time, adding additional structural support posts will increase the strength of the load bearing supports.
Maybe a cable cross brace if not walls
What about building a carport on a existing concrete slope
You might be able to as long as it has footings.
A flat sloped roof would be lighter
16' long ?
Why not do this with a flat sloping roof ?
Yes, go for it.
What the hell happened ?!! he pushed your carport over.🤣 (with his hands)
Isn't a roof covering the ground called Ground Cover? 🤣
Thank you
You're welcome