Board Formed Concrete - An Architect's Guide

[@makermarx]

TIP: for all you DIY guys out there - make molds for seats, stepping stones, blocks or a fire pit and cast your concrete and wood texture experiments in there. You end up with samples that are useful, functional and informative.

[@sw4dn]

I've learned from your channel more than what I've learned in Architecture School

[@30by40]

Kind words for me...less so for your architecture school...! Should we out them? Where are you studying?

[@fredrickkamwati2458]

Karim Amer

[@gongshijun1310]

same here. thank you so much!

[@VanECi29]

Same from ETH Zürich

[@RanNero]

@@30by40 A gentleman's way to call out bullsh*t

[@drwestlund]

Great video. Thank you for not wasting my time with a lot of nonsense and sticking to the point. I also love concrete and its many potential uses and possibilities. Rock on

[@30by40]

much respect...

[@heartobefelt]

Agreed , He is straight to the point and does not waffle on , some channels take 3 hours to describe what could be a 20 minute video.

[@ReFFigueiredo3]

I am from Brasil and my dad is a constructor there… I really would love to have a house just like we build there (all concrete, bricks etc) …. But when I see the price here, I just want to bring my dad to build it for me .. plus his knowledge is unbelievable! I can’t say which house he built is my favorite… they are all totally different and unique. I get so tired to see the houses here looking the same .. I want my house to not look the same as my neighbor… I love to drive in Brasil and look all the different houses… (not the same color, not the same window, not the same roof, not the same shape… creativity and different taste )… I love this house you built …Unique and gorgeous! Brought some memories back… Subscribing :)

[@saltyroe3179]

2 of the 4 elements are coarse aggregate (usually gravel) and fine aggregate (usually sand). Most concrete has reinforcing (usually steel). Both coarse and fine have been replaced by recycled materials, my favorite is crushed glass.

[@jca-arkitekto-tv]

I've been really frustrated with my architectural career for some time. But since I discovered your channel, You inspired me to believe once again. I lost my passion some years ago and now I am so fired up to make a fresh new start. Thank you sir. You deserve to be in the roster of great architects someday. You are an educator and a catalyst.

[@30by40]

very kind words my friend...thanks!

[@bkik5]

Concisely presented with lots of nuanced information. Excellent and informative video, thank you.

[@koogle612]

Great topic Love to take an often overlooked component so central to building & showcase its adaptability.

[@brigittahoffmann9283]

It is very pretty and it looks so much more creative than just purely plain finished walls and concrete. Very creative compared to other techniques,

[@maxinebannan106]

Greetings from New Zealand. Great to see your video and how you've explained the basic principle. The image you've used of the horizontal board entrance with the staircase to the right side is actually a home I built here in NZ. Soon I'll be uploading more information and instructional videos to You Tube also. Regards Ross Bannan (Bannan Construction Ltd) "Concreteologist"

[@chrisxiiv]

Can you do it using blockwalls?

[@PhilippeLarcher]

I'm watching this from Uji, Japan, because I just visited a stunning building with this technique 😁

[@loganconnally4361]

Next time use Nox Cretes Clear Pre-Form, it seals the rough sawn lumber and stops wood sugar migration, which will expose the face of concrete as long as the forms stay up otherwise, the pre form stops the transfer of small slivers also, what you end up with is a non Absorptive surface to pour against, with the right form release (nox crete #10 -450 architectural release) and the right AMOUNT of form release youll get the most consistent, beautiful board form wall youve ever seen, it allows the wood to transfer all the grain and texture, but it will look like you used HDO plywood somehow also.

[@kamiliasghaier4122]

Thank you so much for the video ! Our english class was happy to watch it!

[@30by40]

+Kamilia Sghaier glad it helped...interested to know how you're using it...

[@kamiliasghaier4122]

We are in an Architecture School in France (ENSA Normandie, in Rouen fyi) ! We're actually learning how to use concrete and how to make a formwork ! And that was really helpful !! Greetings from France !

[@30by40]

very cool...

[@mr.b441]

Thank you so much for your wonderfully informative video. I hope you receive ad revenue from these quality videos.

[@30by40]

You're quite welcome... Ad rev is tiny...I really do this because I enjoy it. Viewers can help support the channel by clicking the ads or visiting the links/products on the channel home page. Thanks for watching...cheers...

[@mjarratt12]

You've been making these videos quite regularly (and they've all been great in my opinion!) have you considered using patreon for additional page income? Some of my favorite users, especially those giving educational/instructional videos, use that to help fund their videos and improve content. Keep up the awesome work and thank you!

[@30by40]

hi +mjarratt12 happy to hear you're enjoying the videos. I did set up a Patreon (www.patreon.com/30X40) not long ago and when I released a video announcing it I received some pretty negative feedback from viewers. I have to say it was kind of a disheartening experience... I've begun to reach out to brand sponsors for the channel which will hopefully allow me to dedicate more time to creating even better quality videos. I do appreciate the kind words and support especially in the form of likes & shares! cheers...

[@charlesmichael5415]

Your channel is fantastic, thanks for putting your knowledge and expertise out there. Currently I watch your videos to learn more about the processes in creating something wonderful. Count on us as patrons as we start building our home because like others have commented you provide more insight than some builders, designers or architects provide their clients. Thanks

[@online_screen_name]

my only question on these is what is the best way to insulate them?

[@alexanderclaylavin]

Thanks so much for the video. I've just stumbled headlong into a concrete house obsession and it's great to know there is outstanding work here in Northern New England. Thanks again--Ando would approve!

[@30by40]

kind words +Alexander Lavin...many thanks...

[@alexurquidez5581]

Really good video man, thanks for the information! Greetings from mexico

[@30by40]

Cheers +Alex ...thanks for your kind words...

[@thatguyBrettski]

Well articulated mate.

[@IslamYunusov]

Wow! What a 'quality' content! So pleasing and empowering> Thank you for what you do!

[@LukeZeme]

This stuff is so interesting! Thanks for sharing as it's cool to see how the concrete facades are made and placed.

[@d.o.l1998]

Hi, I ll bulld my house in the African bush. Concrete is perfect . Ty for sharing this. Really will help workers to GRASP fully the technic. Gratefullness from Casamance

[@fayparker6010]

Excellent 🙂 Thank you for this video.

[@Brian-os9qj]

Great concept and aesthetic

[@brianjoyce9742]

Cheers! On effective use and beautiful finished product. Concrete execution, perfect

[@walchand007]

Hey Eric, It is always a pleasure watching your videos, they are so well explained and in detail. So was this video. I am very much inspired by Tadao Ando's Work, as this Video was on Exposed Concrete, Can you give me some details what is his technique of Constructing/Designing Exposed concrete structures. That would really Help.

[@petefraser3013]

Top notch presentation, thanks

[@LJLancaster]

Love your videos mate. They are both informative and entertaining. I fell in love with board formed concrete every since I saw the Tea House by Archi-Union Architects on Arch Daily. The interesting geometries of the walls/stairwell they created was amazing. - LJ 😀

[@30by40]

That one slipped by me...really fantastic project. The form work there must have been an incredible sight. Thanks for sharing. Cheers...

[@mjarratt12]

That's one of my favorites as well!

[@SpicyAl3000]

Wow! That's a concrete extravaganza, cheers.

[@bbreed1]

Excellent video. Very informative. Do most concrete companies know what the additive is that is added to the slurry. I’m an architect is colorado and want to try this process. I’m looking forward to it. Should pine work ?? Thanks a ton.

[@mansardmanor3869]

I know this video is old at my time of comments, but I would like to add: 1- Monolithic pour You fill your forms from bottom to top, non stop. Blowouts can occur with excessive weight from concrete. Vs 2- Cold joint pour You fill your forms from bottom to 4 feet high, let concrete cure, as it hardens it can support the next 4 feet of concrete, without a blowout.

[@pauldalbello5061]

Would appreciate a discussion about coloring of concrete and it’s use (in environmentally sensitive areas) to help achieve greater harmony between a structure and its surroundings..

[@mrpbright]

Bar none the best cosmetically focused formed crete video. Loved the pace and content. I'm curious what you think about poured panel veneer over existing clockwork. Thanks for this video. Heading out to check out the rest of them.

[@gusti2wire]

this is awesome. lots of value.

[@GhostedStories]

One of my favourites!

[@miguelrivera5967]

Nice info, Thank you for the knowledge. Tadao Ando has his own signiture concrete smoothness. Do you have any idea? Thanks.

[@brianlehmkuhl8162]

Can you fill the mild steel holes with a color matched epoxy to seal for rust,

[@jhanphillipco]

this method is nice but usually ends up requiring more cost in labor and materials as compared to chb plastered wall. best to chose the areas where to really put them. thanks for the info

[@ricardomanaloto9877]

Fantastic! Very informative!

[@Leneufcinqcergy]

I love concrete!!!!! Thank you!!!!!

[@erickmeza6664]

Does anyone know what the standard would be for insulation, if using this system as an exterior wall. Would one add a thin frame on the inside and insulate between the space? Please reach out if you have any idea. Thanks!!

[@saacredranch6507]

Aloha, thank you for the very informational video. One question, once a wall is done, can you reuse the boards for another wall? Mahalo

[@lembarinfo000]

Very clear. Many many thanks

[@kurtzcol]

do you oil the board forms?

[@Snipely]

Very informative video. How are the boards treated so they release from the concrete? Is it possible to do a form against an existing wall to create a veneer?

[@DavidLuger]

Beautiful designs and good vid. I would love to see what you would come up with designing a concrete monolithic dome home. They are super efficient and strong and functional but usually hard on the eyes.

[@heartobefelt]

Strong in Earthquake or cyclone but they usually lack ** LIGHT** , windows can be hard to match the curved surface of a dome so windows are often small , and one of the healthiest factors in a good home design is natural light. Otherwise ... I love domes too.

[@capegman]

Did you ever publish an update on the costs and final thoughts on this board formed concrete like you stated near the end of the video?

[@maurocerino5600]

Hi Eric! i love this video. i'm learning a lot whit this little resumes that i can apply in my project classes and add it to my sources of resources. have you plan to do a list videos whit others materials? i'd love if you start with wood and steel, they are huge themes.

[@30by40]

+Mauro Cerino have you checked out this playlist yet: kzbin.info/aero/PLuJj3iQpiK3vDaAWXVQIPwWmLbUKETMmA

[@valentinaaigro3050]

Mauro Cerino I.

[@rutupatel8466]

is there any way I can see your designs and finished projects ... I've just been seeing your videos for the past 6 hrs , so informative n fun n inspiring .

[@premrajpillai7278]

Hi eric, hope all is going smooth around you amid this pandemic. Could you please refer any books or source from where we could learn more techniques and detail work for casting a concrete wall. And how to pigment concrete. How can we acheive smooth concrete surfaces like Tadao ando does?

[@forreal245]

30x40 Design Workshop...I love concrete homes. Any suggestions for a good prefab home manufacturer that services the deep south?

[@AnjulaGodakumbura]

Do you use anything on the boards to make them easy to remove afterwards?

[@arq.gloriaguillen1294]

Hello, thanx for sharing your info. Im planning to do a board form concrete wall, it measures 9.45 meters width and 11 meters tall, what distance should be between the control joints? And, have you known about a proyect that used plastic fence as an outer shell, instead of wood?

[@juanicarmona]

Very useful information thank you!

[@lupi237]

Love your work sir! I'm trying to design a brutalist house, just like your experiment,but can't find a detail to prove the U values only from a 200mm RC wall. Any thoughts? Thanks very much, really appreciate your time to explain all this.

[@kyletatro]

What is the best way to put fiberglass ties threw your thin panel form liner?

[@artarch944]

I wonder, How the Cover blocks are hidden on exposed concrete roof slab?! Could anyone kindly explain?

[@pallavigulvady692]

Hi, thank you for this a super informative video. Is there any specific treatment ( chemical treatment) that can be done once the slab has already been cast? Is there any specific way we can clean to prepare it for the final handover? Looking forward to your response. Thank you in advance.

[@parthkokate2203]

Sir , there is need of any kind of treatment to concrete facade which is exposed to exterior in case of rainy climate

[@apeterson23]

So what did you decide to use on the wood texturing? Sandblasting? And would you use that technique again or use another method?

[@30by40]

having completed the pours recently, I have a short follow-up video coming soon discussing what worked and what didn't...

[@ErinPellegrino]

Have you ever had to patch a boardroom for cosmetic issues? How would one go about it?

[@umaqeel]

Good job. Does it need to be coated with any protective coating if this is to be done for exterior walls? @30X40 Design Workshop

[@loganconnally4361]

Nox crete stifel VC

[@evelynzuberbuhler9427]

I am really enjoying your videos and this is another interesting one. I was wondering if it was possible to use hempcrete for this type of project? Also, could a similar type of method be used on flooring?

[@30by40]

Thanks +Evelyn, glad you're enjoying the videos. In theory, I presume this forming method would work with hempcrete, however I have no personal experience with it. Care should be taken to ensure the compressive and tensile strengths have been evaluated for the specific application; hempcrete has significantly lower values in both these respects than traditional concrete. I wouldn't recommend it for flooring applications. Not only would it be difficult to achieve without stamping it, but surface irregularities could present tripping hazards and maintenance (cleaning, etc.) would be a challenge. Hope that helps...

[@akashrajput1323]

What is the actual proportion of concrete mixer ? or which grade of concrete used in this exposed concrete wall ?

[@IgorRech1]

is this the same thechniche that tadao ando uses? what is that 4 round things in his concrete? thanks

[@hellonoko]

Really enjoying your video, can you suggest any books on concrete, forming, architectural concrete?

[@30by40]

In general I’ve been liking this series: thirtybyforty.com/architectural-concrete-book , and there’s a two-volume set here: thirtybyforty.com/contemporary-concrete-buildings . The first book includes lots of detail and balances it with beautiful images, however it has limited explanatory text; the second is more of a coffee table book with fantastic images. Architects to study: Ando, Siza, Corbusier, Kahn, Herzog & DeMeuron, Niemeyer, Zaha, Nervi, Sverre Fehn, and Wright to name just a few of the masters. There's the Brutalist movement…and lastly, the ACI (American Concrete Institute) hosts an outstanding library of technical information. www.concrete.org/publications/ Hope that helps...cheers...

[@dpz7184]

Can you reuse casting boards?

[@anudeeparakkathara5520]

What is the ideal height of a layer of concrete pouring ..?

[@minimal.5324]

omg thanks for the video.I learned a lot :-)

[@futbolera]

THANK YOU!

[@Leneufcinqcergy]

I have a question please. I am planning to build my own house but have conflicting design ideas I think. I am in love and have been for quite sometime with Shou Sugi Ban (before it was all the rage) but I also love concrete equally. I want to build a very simple rectangular structure with the exterior being completely wood and the interior being completely concrete (walls, floors & ceilings). Maybe using concrete veneers for the walls and ceilings to make it more doable. Does this make sense? Will it be overly jarring, look ridiculous. I want both but need some advice. What do you think please? P.S. I still haven't found suitable instructions online for building smooth walls from concrete for the DIYer homebuilder.

[@30by40]

I would reverse the idea: concrete outside, wood inside. This - to me - is a more natural juxtaposition that capitalizes on each material's inherent strengths. Concrete is rugged and can withstand weathering and the elements whilst wood is harder to maintain outside. Wood is warmer and has a lower thermal mass - thus easier to warm up and cool down. You'll have an easier time finding subcontractors to finish concrete that's meant for an exterior (less finished) environment and likewise an easier time finding skilled labor to finish a wood interior than concrete. If you really like the look of concrete inside, perhaps reserve it for floors...? Hope that helps...

[@neckarsulme]

Looks awesome, but what about insulation and water penetration?

[@30by40]

depends entirely on context (exposed exterior vs. interior), climate, and function. in new england we typically insulate to the interior which keeps from heating the entire thermal mass of concrete and we often use this for exposed retaining walls so waterproofing isn't necessary. you need to waterproof if you're using it in a below grade application that's near living space, but there's no reason to go through the extra trouble of exterior board forming at that point and you would waterproof per standard construction details. hope that helps...

[@projectb3117]

Would 3 inch interior wall also be possible? Or is 8 inch a minimum?

[@30by40]

3" could work as well...substantial increase on the forming labor I would guess!

[@josemonteiro4633]

Composite wall, concrete and mud

[@robertr7887]

heres a tip. have you tried plastic tie rods? you can lubricate them and pull them out the next day. reusable also

[@30by40]

+Roberto Ramos ...form ties are cast into (and remain permanently) in the wall...we looked at fiberglass but had difficulty sourcing them..

[@austinkim6372]

To me, they look beautiful on all landscape works, but not on exposed foundation walls in houses. I always wondered what others think.

[@chrisxiiv]

can this be done with blockwalls??

[@SteveHybicki]

I think I’m going to try it

[@mtjv05]

Excellent video, thank you! Any Scottsdale AZ contractors you would recommend?

[@30by40]

sorry...i practice in maine...

[@ChaosForLunch]

please tell me, what is the concrete recipe ?

[@archstudioRAM]

Thank you

[@MakeMeThinkAgain]

Using slag or recycled concrete?

[@30by40]

Not on this one, there's only one certified concrete plant close to our project so our options are extremely limited.

[@30by40]

kind words...many thanks...

[@manjichromagnon5480]

What used to be standard is now luxury

[@LeoPetri]

Thanks!

[@12vLife]

I love this building style.. but not as much as I hate drywall, plaster, siding and fiberglass insulation. Any good contractors who specialize in Central Florida? I have this idea to owner-build a 1000 sq foot two floor tiny home in Florida and sub contract the foundation, concrete shell, roof, windows/doors (flush mounted) over this shell. Mechanicals, plumbing and electrical exposed and painted over one single wall behind my free standing kitchen and entertainment systems. No lines under my foundation. A single hole in my wall for utilities sealed. No interior walls, doors or trim (besides toilet rooms). Acid stained concrete floors. One Flat metal roof with 24 inches of rockwool insulation. Crazy or Brilliant?

[@mrtahoe]

All you mean 5 and a half inches right since a 2x6 isn’t 6 inches….. not expecting you to know that since you are not in the field

[@simlowsb]

Look for steeldog fiberglass ties

[@aubrey5569]

educate me on rammed earth please

[@hermesgabrielli579]

You must see how Carlo Scarpa use concrete

[@motorolalasershot]

update??

[@30by40]

Walls look fantastic...have to share some finished photos soon...lots learned in this process...

[@futurepilot6749]

Cool

[@loganconnally4361]

One important step you missed, and this is extremely important, almost more important than your mix design, is using the correct form release and the correct amount, use a chemically reactive release and DO NOT over apply, a common misconception is that the note oil you use the better the forms will strip and the better the face will look, this is wrong, excessive form releases will cause bugholes and staining, and its a waste of money.

[@ConcreteLand]

Sand is an aggregate. It's just finer.

[@patrickgolladay6913]

Concrete is aggregate, water, and cement. Sand is aggregate. Great video though.

[@HankMorris-el6jg]

Money money money monnaanee!

[@OR1L215]

At least 30% more

[@matthewcreary9579]

💰

[@SigmaDG]

Enjoyed the video! We offer a fiberglass tie that would be perfect for your application! We also have a system that can work on standard form ply single waler applications. Check out our fiberglass concrete ties at: sigmadg.com/fiberglass-form-ties-for-concrete-forming.html

[@Trump-ty9nj]

deregulate housing and all industry so rent falls near 0

[@martinramirez2204]

Thank you