Concrete thickness explained! - The Barndominium show E136
Вставка
- Опубліковано 20 чер 2019
- Erik explains in detail the difference between 4" and 6" concrete slabs and how 4" can be drastically stronger than 6" if built properly.
#TexasBarndominiums
#Barndominium
#Concrete
www.texasbarndominiums.com/
/ texasbarndominiums
/ texasbarndominiums
Gear I use to shoot videos:
Main Camera - amzn.to/2CW7hs1
Gimbal for main camera - amzn.to/2tERtrp
Favorite lens - amzn.to/2FeSvyu
B-Roll lens - amzn.to/2hui1Wz
Drone - amzn.to/2jsAozi
GoPro 7 - amzn.to/2T3n2KB
Gimbal for GoPro - amzn.to/2AKFtag
Microphone - amzn.to/2hxv6BW
Tripod - amzn.to/2iW2ZsF
Tripod video head - amzn.to/2yEZGgl - Розваги
My wife and I have this argument all the time......
😂
😂😂😂
Great Video! Forgive me for the intrusion, I am interested in your thoughts. Have you researched - Canackenzie Astounded Cure (should be on google have a look)? It is an awesome one of a kind guide for building better sheds and master woodworking without the hard work. Ive heard some extraordinary things about it and my friend after many years got cool success with it.
🤣🤣🤣🤣🤣
Hahahaha
Extremely well rounded analysis. Anything complex has to many variables to explain in a quick youtube video but you hit the nail on the head.
This guy hasn't got a clue !! Nothing he says holds water because he keeps changing the FACTS !
"Have your slab engineered" -- the most valuable part of this video. Following local building codes will generally keep you out of trouble. Knowing the subgrade soil characteristics is crucial -- they may lead you to build over code. If you're using reinforcing in a slab, always support on some kind of chair or concrete brick (with compressive strength greater than your concrete.)
Was going to comment the exact thing. If it’s engineered, it takes the guesswork out and in my town they over engineer everything. In one instance, we had some sign base caissons engineered and they were at multiple locations. So they took the worst possible case base material and everything had to conform to those standards. Lazy but works. For a 4’ tall by 6’ wide sign, the caisson was 4’wide x 8’ deep, however we got away with making one or two 6’ wide by 4-5’ deep cause we hit limestone or bedrock and could only make it wider. Still way overbuilt imo.
Eric you always do a great job providing education and instruction of your craft - keep up the outstanding work!
Excellent presentation. Informative and helpful. Thank you for taking the time to create and provide this information.
It's fascinating material you offer to your audience. Thank you very much for contributing. A heartfelt thanks!
I just did a chicken coop/small barn 12x12. Did a 6 inch slab with fiber reinforcement. 3500 psi concrete. I couldn’t afford rebar, but my neighbor had cattle panels he was looking to get rid of. Not sure of gauge size but they’re roughly pencil thickness. I cut them to size and threw them in the hole, they sit a couple inches up from the bottom of the slab. It’s bulletproof for what it is
You got fat chickens?😂
No such thing as overbuilt I always say!
I’m planning for residential hobby shop and low and behold it’s Erik Cortina!!!!! Love your [now] channels .
Good info! Matt over on the build show has some really good videos showing the process from A to Z on how/why support beams or even columns are a must.
Sort of disappointed in that show over the last couple years, seems he's jumping on new tech before it's proven. So I don't really trust what Matt puts out.
@@fordguyfordguy He also shills like crazy for one vendor after another.
I wish you would come back to this channel for construction videos again. Your one of the reasons I do what I do.
Great information. We are considering building a slab for a swim spa/ hot tub on
ground that has had an above ground pool weight on it for many years. This information is exactly what I was looking for. Thanks 🙏
Good explanation, i would have really liked to see an actual concrete demonstration to show strength differences between fiber mesh and rebar/wire
Good info Eric! As always, well presented info
As an architect I studied 5 years and another 2 to get the degree. Now there are tables that consider the resistance of the concrete, steel reinforcement you use and gives the load it can support. Also the sub base of gravel and sand over compacted soil. In any case slabs are not considered as supporting the framework of the building, you need foundations. For an house, 3" is enough with an reinforcement mesh and a good leveled compacted sub base. It is not a floating slab on a high rise bi¡building.
Thank you so much for great information! Love the videos!
Great video
So many variables. Same goes with compaction of underneath soil and preparation.
I love this video. Info well presented.
Good stuff. Getting ready to build
A retirement Barndo on 12 acres
in Southeast Texas. We want it
done right.
This is why I watch your videos . I always get the information I need. Wish you guys were in Arkansas.
Smart and clear info delivered really good, thanks.
Excellent demonstration.
👍👍👍👍👍
that was really cool. Just learned a good bit, and I'm sure there is more to learn. Thanks
Good general summary on dynamics of a slab.
It's important about soil type, following code due to location, how big the slab is and how much load its going to withstand. Some cities requires you to dig down at least 4 feet down regardless due to following frost line code.
How much does a soil sample cost usually? After analyzing don’t they usually write a report and recommend the type of pad and slab too?
Thank you for that diminstration. It was very helpful.
It helps a lot and creates more questions 😁 I cannot seem to find a specification for spacing of the beams under the slab. Example: 30x40 garage, how many beams should there be and in what arrangement?
Erik: I dont think there is anyone else in North America who knows more about cement or foundations than you and your company. Been watching you for several years now....and always the information you share!
very good info, worth a some texas barbecue for sure
Another awesome video! 👌🏼💯
Very well explained, thanks for the info.
Thank you
You are correct. Sub base underneath needs compacted down. Remember on slabs fiberglass mesh in the mix also helps strengthen it.
I thought my dad was crazy going with high psi, fiber, wire mesh, AND rebar for his driveway. We spent a month prepping, easily 100+ hours walking a compactor. But 15 years later not a single crack, And it does rise a good inch or 2 during a cold winter. dont remember exact size but it was ~35yds of concrete @ 4"
100 hours running a compactor yea okay liar
@@sharpshooternick we spent over a month prepping, worst summer i can remember, we rented the compactor for 2 weeks and ran it every day. neighbor was pissed
@@ganzeytyler liar
@@sharpshooternick like i care what some dumbass like you thinks 😂
@@sharpshooternickYou seem like a nice fellow, Nick.
Great video Eric! Thanks
I love it when you get under cut in job then when it all goes wrong the home owner contacts you asking if you can fit! lol
I remember my late fathers company (god rest his soul), laying some HUGE reinforced Heavy load bearing Monolithic floors at a Rolls Royce engineering factory 12 inch deep. 8 inch of concrete with a 4 inch Granite topping laid on top before the concrete fully sets They were more like a 'Work of Art' than just a floor.
I sold a bunch of material on a Rolls Royce plant in VA years ago (maybe the same one your reffering too). That was a crazy project! Some factory slabs were 18" thick, super flat floors with no expansion joints and round isolation joints at columns rather than typical diamonds. They also had heavy duty, felt isolation fabric surrounding all precision equipment pads. Pretty cool stuff
@@vaystation9059 yes, some of those floors were 18" thick and they were all super flat and spot on level too. Laid in large bays separated by rubberised boarders. Each bay was joined to the other with steel male and female reinforcement sleeves to allow for letteral movement caused by vibrations but also to stop any up and down movement. I don't know what they built there because Rolls Royce build a lot more than just car engines. Ships, Tanks, Plane and Rocket engines et cetera. But I highly doubt that particular factory was built to make car engines. Reinforced Concrete is strong but 4 inch Granite toppings is a Whole different level of 'Strong'. I don't think you'd need floors like that to build car engines. But I don't know, it was a long time ago.
Yeah that's crazy engineering even the best would have many challenges with that project!!!
What a good informative video!
The basic structural analysis is that a horizontal support element incurs bending forces, which are really compound of compression at the top of the element and tension at the bottom. And material-wise, concrete is exceptionally strong in compression but its worthless in tension it pulls apart like dirt.... in contrast, steel cable is exceptionally strong in tension but worthless in compression, sorta like string. So how it works is, if you embed some grade of steel near the bottom of the slap, some grade of steel with good tensile strength, then you make the entire slap vastly stronger than if you just poured concrete all by itself.
Great explanation sir!
Explained very well thank you.
Very interesting! I learn so much on your channel!!
Thank you.
This was great! Thank you!
Years ago I worked for a contractor that didn't care about the specs he built things his way so make sure that the contractor follows the specifications listed and make sure the inspector knows what he's doing also.
Can you go into more detail about where to get soil tested and engineered--great information THX
Thanks for the breakdown
Excellent. Very helpful. Thanks. God bless.
Good demonstration
Fantastic video
So when talking pressure it comes back to the MPa in the mix. Higher the MPa the stronger the concrete. Here in Australia where I work we use from 15 MPa up to about 60 Mpa.
I Have a pole barn about 25 by 40 ft on 1 foot of clay on SE corner and 3 ft tall on the NW with around 5 inches of rocks on top would you recommend removing the rock or pouring a 4 in slab on top with appropriate reinforcement?
I'm going to go with a 10" slab for my garden shed with fiber and mesh sandwiched by two grids of #6 rebar just to be safe!
Is this for a timber or brick/block build
@@jonathanmcrae3728 Rail track studs and 3/4" steel plate sheathing..
Don’t forget to vibrate!
Put it on piles too to be safe
@@aliveandwell2078 that what she said
Great video but a little unclear. When you reinforce the slab with beams, are those beams directly under the load (of, say, the interior walls), or are they just in a grid pattern. Would a “waffle” foundation, with intersecting beams every 12’ in both directions, be sufficient to support interior walls that may *not* be directly over the beams?
Nice, can you go into soil samples a little bit more and what sand, clay, silt require for slab thickness/beam recommendations?
Soil particles in soil determine soil load-bearing capacity. Soil groups are classified by soil particles size as clay, silt, sand, and gravel. They're particle size ranges from 0.0002"-3", thank you that is all. Bye.
@@R7Romeo Too funny and a typical soils engineering response. I mean no disrespect ma man. The bearing capacity of the soil can be compromised by moisture which negatively affects the soil bearing or lateral capacities of the soil (I am not a soils engineer and only sound like one).
To eliminate all confusion as to which residential slab system is recommended, one should always refer to the soils engineering report and then throw that away and use a post tension system. It will help you in court when the lawsuits start to fly.
Tony Reyes Yea, and I know production builders who do exactly that. Litigation can be a scary thing,lol.
@@tonyreyes1798 You hit the nail on the head. Especially with expansive soils creating voids or uplift depending on moisture.
Drainage solutions aside...is postension cheaper or more effective than helical piles or even micropile? I'm thinking correctly: Slabs crack because of unsupported loads. If the beams are spaced correctly and the pile is installed to max bearing capacity, then the load is transferred to the soil as long as you got the proper torque at install.
@@billthayer5239 For residential slabs the only time I see helical piles are for structural failure corrections or for Type 1 construction / high rises in production. For residential slabs (Type V construction) post tension systems are within ~$2k of a conventional slab (monolithic pour or two pour, #3 or 4 rebar with welded wire mesh (6x6 or 10x10). Slabs will crack due to a variety of factors. Shrinkage, deflections due to soil's expansive index, earthquake fault lines, poor soils or foundation engineering (cut / fill pads etc), slope movement .... you name it and just when I think I have seen it all ...... I highly recommend a post tension system regardless of the soils expansive index.
Great video! Thank you very much for your help
You’re welcome.
As with so many things in life, "it depends" is the most correct answer 😂
GREAT AGAIN!.. THANKYOU
Depends on your mix design and restyle placement and size.
I like the 10 inch slab I just watched before this one. Many good points. Like the idea if a builder over engineering with his gut and experience better than a desk engineering plan. What should we do then double it. That's good engineering and not run by penny pinchi ng accounts or cheap customers. I wNt to buy a lot in a small town in Texas just to have you build a Barndo for me. Ur great!!
Good info. On a 28x40 garage floor poured inside the foundation walls. 4" thk... do I need beams poured and if so how many and spacing? Thx for your help
Excellent points, hopefully you enlightened some viewers, I'm old school an like rebar double layered on rebar chairs but that mite be real old school.
Two rebar mats in a 4 inch slab? I guess this is why we have engineers.
@@m.5051 With monolithic footers I mite add, an that was in 6" slabs, like I said real old school
The amount of Portland in the mix. A higher percentage that's represented and contained in the overall mixture of sand, stone, calcium, & fiber, and the sum of those also reflects a variation that increases the strength, and the bond those components have as they cure.
Mix is an important factor too, when it comes to cured strength, as is the slump. Rarely will you see a residential contractor check slump and most are pretty often going to use to wet a mix because it is easer to work, but if it's too wet, you will lose cured strength. In commercial jobs an onsite engineer or inspector will make sure they don't let it go down too wet. In residential work, most customers don't know the difference or that it matters.
Having a big slab and/or foundations engineered is not a bad idea because things like the mix, slump and reinforcement are part of the spec. That obligates the supplier and the contractor to meet the spec when supplying the concrete and installing it.
Wonderful tutorial!
Great content thank you
Nice to learn all the difference materials used for foundation or drive ways - You got inches to consider and then you got PSI which the larger number is better, then you have material used for mesh, fiber mesh, and rebar - A lot of new materials are now being used for Mesh and Rebar which will not rust like old material and is much lighter and easier to work with - But as everything you get what you pay for...$$$
You need to let the grass grow long before pouring your 4in slab so the grass fibers will strengthen the slab and be sure to use extra water so it flows level..
And lots of good clay to pack it down....
This guy was a contractor in haiti before the earthquake ....
Don’t forget the leveler powder, so it levels good
How about putting rocks under the concrete slab?
Gravel or cinder both good choices
Very informative! Thanks for the video. I'm subscribing.
I'm a residential designer and make videos as well. I'm just working on one about concrete slabs on grade. I'll be sure to mention yours.
The question i have is..when u say support boards under your test piece..did u place a 2x4 on edge across..
And how would you do this sipport in when you pour your concrete
Do you have a video explaining the support beam construction? Verses a plain flat rebared footer 4" slab?
Yeah the slab I'm wanting to do is over engineered because I hold design and functionality over simple "get it done cheaply". I'm looking to do a garage to support my work and last for a life time or 4. I like strength and durability.
So I'm wanting to do extra aggregate. I'm thinking bigger is slightly better but needs to be added right. I'm also thinks a layer of larger then some more cement mix then smaller aggregate for a finer finish. Of course wire mesh first with structure poles. I'm just thinking What's the best plan for a car garage with a mechanic pit and car lift.
I enjoy your video's. You build a decent building. I like the steel frame and steel exterior. On most of your builds. Do you do any on Oklahoma?
No. Just TX at the moment.
Thanks.
I haven’t seen support beams used in New England - just frost walls & reinforced slab. Would you need them here?
What are they made out of? Thanks!
I have a challenge I've been doing concrete for 27yrs.you should not been slabs unless it's 6 sack .winter ,summer, autumn, spring. There is many verifications you can add ,wind is your worst enemy. I love you guys I've watch you on you barndominings for the last 5yrs maybe I'm impressed love you guys
Water is your worse enemy
It's stronger if you put it to sleep for 28 days than finish it
You're absolutely correct about it is how you build it. My plan has been using 2 foot of crush recycled concrete With number 6 Rebar on 12 inch centers And concrete That has steel fiber with water reducer 12 inches thick Slab.
thank you enjoyed good info
Hey Erik, what happened to Texas Barndominiums? Long time no news!
Perfect
Good info thanks
Thank You Bro!!!!!!!!!!!
Good point.....thickness doest matter it is how you do it right.
Thank you 😎
ALL things equal 6" is ALWAYS stronger.
Yes
And more expensive (if not running into truck minimum delivery)
Many thanks, I been tryin to find out about "how to build a post and beam shed foundation" for a while now, and I think this has helped. Have you ever come across - Damkietor Nonpareil Dominion - (search on google ) ? It is an awesome exclusive product for building better sheds and woodworking without the normal expense. Ive heard some amazing things about it and my buddy got amazing results with it.
what happened to 5 inch slab
I’m trying to make a 20x30 concrete slab with 4in concrete. It’s on flat ground grass. I wanted to use #4 rebar is that good? I’m putting a metal garage on top
thank you!
That's all good advice.
Also is the mix a 3000 psi or. 4000 psi or higher mix does the mix have 57 stone or 89 stone in it what about add mixes it goes on and on it comes down to knowing how concrete is made and what you put in it for reenforcement and so on your videos are a wealth of knowledge thank you sir ps . I haul concrete for a living i Georgia
Thank you.
Yes, aggregate, psi, admixtures, etc all make a difference. Simply saying 6” is better than 4” isn’t necessary true.
I STARTLED when the board break..hahaha..too much coffee..
I’d love to come work with you and learn! Wish you had a Tennessee barndominium company 😎 no one builds them out here really, there’s a few but not like yours
Wish I had seen this video before I had all my concrete work done, it would have helped. Thanks for the knowledge though.
You’re welcome.
Common sense does not require any videos
Guess that explains your comment.
I'm really confused as to how this is supposed to help tighten up my shot groups. But I'll give it a try I suppose.
If you as radiant heat tubing into a slab, should your as thickness to accommodate for weakness introduced by the tubing area occupied?
Will 4" slab with 4"x4" wire mesh fencing work on a 8'x16'
1st timer here.
Does he ever use a fiberglass type of rebar vs the traditional steel rebar?
I'm a Yankee looking at this and I will say, dig it deep and it will stay, for a looooong time. But build what need but 6" slab is pennies compared to a new England foundation. Make sure its built well, best video ever. If it's built well it works.
So i need to pour a 12 inch slab under my 4 inch slab ?
Thank you
My friend.
How far apart should u put the support beams on a 4" slab. Say for example.
25 width x 45 lenth.
Depends on the purpose. Put them about 12.5 feet apart one way and 15 feet apart the other way.
Every 2 inches
How about a post tension slab? This would be an interesting video.
Thank you, from Laredo, Texas
Yes, we will do something to mimic post tension vs rebar.
Ray, do you do concrete work in Laredo?
Thank you for sharing your video with us ... the world is already better with people like you and I; )
I'm going out a car lift in my metal garage storing two cars on the lift one on floor one on lift what do you suggest ?5inch with fiber
05/01/22 👋🏼🍓👍🏼 Thanks Erik!