This wall looks like it's made out of Lego 1x2 bricks.

This wall looks like it's made out of Lego 1x2 bricks.

Well it is...Just grown-up versions.

Edit: oh wow. top comment. much happy.

Sure, here is a sloppy photoshop.

Sure, .

Good thing you can step on them without hurting yourself though

Unless you step on that metal thing in the middle of each block

Someone please paint it red and yellow and blue.

Edit: Thank you u/PM_ME_SOME_STEAM_KEY and u/xxThe_Designer for delivering !

Tried gonewild already, didn't get much love there sadly

Even that seems okay. It's a round "loop" of metal that's embedded in the concrete. I do believe that's what you use to pick them up (with heavy equipment).

you should repost this to some sort of sub, I love it!

I apologize, I read it as an angry old Irishman instead. 10/10 would do again.

there's is a company called Lock-Block in Vancouver that has been doing this for over thirty years, although their designs are cross shaped and are (in my opinion) a better fit. Their blocks are all over the highways in retaining walls etc. but they also have an arch-lock system whereby they build an arch with a special truck underneath that has round structure with rollers on top and as it pulls out the arch falls together and is very strong.

try /sub/gonwild

I just got the name of that sub! How could I be so stupid! It is gon like a polygon. I feep so dumb.

A'phshShh, we send one child t'e pick up tiny lego boulder here in Soviet Russia.

Here you go

Godzillas screwed

I made a tilt-shifted version of your photoshop to make it look lego-sized:

Here you go Stranger

Precast building/concrete. More and more buildings are being made this way. Fabricated in big plants and put together like legos

Those are clearly mega blocks.

dude... TIL

Concrete trucks often return to the plant with excess concrete in their trucks. Instead of throwing it out, they create these blocks with precast moulds.

This results in the concrete company increasing its profits as the concrete has already been paid for by the original client.

Edit: they are mostly used for temporary barriers and foundations as they are easily lifted and transported. The company usually casts in lifting cables for easy lifting.

It happens when a blue brick and a yellow brick love each other veeery much... And then have unprotected sex in the bushes.

Concrete batch plant equipment salesman here!

These blocks can be very profitable for a concrete producer. Let's say Joe Homeowner orders 8 cubic yards of concrete to pour a new concrete slab in his backyard for a deck. Turns out, he really only needed 7 cubic yards to complete the job. So what does the concrete truck do with that extra yard of concrete? He takes it back to the concrete batching facility, and dumps the remaining one cubic yard of concrete into 1 cubic yard block forms, which, once the concrete has set and cured, turn into the concrete blocks shown in OP's picture. They are interlocking for structural integrity, exactly like Legos, and are reinforced with a steel mesh skeleton for strength called "re-bar" (reinforcement bar) prior to set and cure. Also prior to set and cure, and steel cable loop is added at the top of the block, in between the two interlocking mounds, so that a forlift or front end loader can move and place them with ease.

The best part is, Joe Homeowner HAS to pay for 8 cubic yards of concrete, because that's what he ordered, that's the way it goes. So, the concrete producer not only gets paid in full by Joe Homeowner for 8 cubic yards, but now the concrete producer has inventory of these interlocking concrete blocks that are EVERYWHERE in the construction and landscaping industries and are in high demand typically. The concrete producer can then sell these blocks for a couple hundred apiece. Not a bad deal!

For your health!

Did the same. I think it was the "t'e".

Never realized those were only mostly in Vancouver. I was wondering how everyone found these so interesting.

These blocks are mostly made after concrete that has been sent to a project gets rejected for one reason or another.

Concrete companies came up with a way to use the waste, and sell for a small profit, on otherwise wasted concrete. They make blocks, or they pay a dump fee to get rid of concrete, that in all reality is still structurally efficient.

Most of the concrete plants I've been around actually build a wall of these, over time, around their facilities.

Source: Am a guy who has seen these blocks made

I don't know about leftover concrete. You would have no control over the properties of the concrete. When we spec concrete for a job it is formulated to very specific specifications as far as strength, hardness, cure time, workability, plasticity, recycled content, color, density, etc... Lots of things are added to the mix to control these properties (admixtures).

The longer the concrete is in the truck the more it changes chemically and the less able it is to meet the specification. You have a 2 hour window to get the concrete from the batch plant to offload.

If we are pouring a big job, it's orchestrated pretty closely. Sometimes you will have trucks lined up down the block all timed properly , but if suddenly something causes a delay - weather event, slump test failure, equipment failure, injury, whatever - that causes a truck load to pass the 2 hour mark that truck gets sent home.

If it has to bring that same batch back to another location and wait for forms to be set up and pours in, your looking at concrete way past it's limit. You have no control of any property at that point and there's no way it could pass any test or regulation. And if you are brining in half empty trucks from multiple pours you are going to end up with Frankenstein blocks.

Green Lego bricks? What sorcery is this? Edit: Thanks everyone for the update on Lego colours.

Okay so you get your pinky toe caught in the loop and then fall off the side and rip the toe off.

ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Do you know a lot about this? Is it better than cinderblocks? Stronger or lighter or easier or what?

I thought you were allowed to play with smaller pieces when you got older, and the big ones were for small children.

More like gigablocks

A minor inconvenience

I Reddit in only pirate voice.

Green LEGO bricks haven't been unusual since the late 1990s. It's a standard colour now.

Dude, I've been subbed a long time there and that's a TIL for me too

American here, I wish we could use metric. Imperial measurements are so fucking stupid.

I did a huge job up in Northern Manitoba, Canada in 2015, lots of calculations and drawings, it all had to be in metric. Once I got used to it it was SO. MUCH. EASIER.


Unfortunately, here in the US concrete industry, it's all gone by "cubic yards". Plant equipment production rates are listed as "cubic yards per hour".

Oh, to make it more fun, we still us BARRELS for a volume measurement for powdered Portland Cement. BARRELS. THE SAME UNIT OF MEASURE THEY USED FOR BEER PRODUCTION LIKE 700 YEARS AGO.

sigh again.

Not to be that guy but convention is to say length x width (x height) so they're called 2x1 bricks.

I only work in black. And sometimes very very dark grey.

Once Godzilla steps on them...

you were 1 minute too late. :(

****° Four stars, by LEGO Engineer

Strong and sturdy, does what it should. Bonus for bringing back childhood memories.

However, I can't give full points since it's too easy to accidentally rip off a toe on the small hook.

13 of 15 found this review helpful.

Legos are the grown up version of Legos.

I just assumed he was speaking the call of Cthulhu...

Read it in a pirates voice

No, These are used as barriers not structural building material.

Im proud of you

God damn tilt shift is so fascinating to me. It makes anything look tiny

Cubic yards? Using metric all my life makes that phrase short-circuit my brain.

These are for retaining/barrier walls but buildings are made out of "pre-fab" (pre-fabricated) concrete all the time. I'll add a link to it in here. It's a really neat process. Trucks will carry in the concrete sections/walls and a crane takes them up and almost lays them in like legos. Not as easy but essentially the same idea.

Then these are for newborns.

They save all of the extra fleeb for future use.

Now photoshop them as megabloks

I want to rent some heavy equipment, buy a bunch of these blocks and build myself a Lego house I can live in!

Eh, if they sell them, such as Redi-Rock and others they have to abide by standards. You cant just take crap concrete and sell block from it. Segmental retaining wall blocks have to abide by the ASTM C1373 Standard Specification for Segmental Retaining Wall Units.

Ay Reddit N ohn-LEE poi-rat voee-suh

Thanks. We have the greatest civilization that has ever existed. I love seeing solutions like this come together. These guys are effing heroes.

they will be at night

Holy shit, that actually looks legit.

How is this sloppy? Looks perfect to me! I must be terrible at Photoshop.

Or..... How great that idea was!$_35.JPG

It happened in the 90s. Regular green 1x2:s has been included in over 300 different sets since then,

No it doesn't! They are clearly

much bigger not plastic "pegs" ain't round

I was not fooled for A SECOND

It's important that the fleeb is rubbed, because the fleeb has ALL of the fleeb juice

You should look up insulated concrete forms.

As a construction manager in the Vancouver area I'm shocked that everybody finds these so interesting. They're just lock blocks... They retain earth, they're not meant for constructing a building or anything.

Yeah. I didn't say they make them out of crap concrete. Though some of the rejected concrete could be bad.

Concrete gets rejected all the time due to factors that don't necessarily mean the concrete is bad.

Also, you think anyone is performing QC on concrete going into those blocks?

But the imperial system allows to detect sneaky Canadians

element id 4107736 and 4647553 for dark green and bright green respectively.

anyone else having trouble telling the scale of the wall? sometimes it looks miniature, at other glances it looks like it could be a huge castle wall

His mother said if he didn't stop building and get into bed right this instant she would knock it all down.

I like the green layer.


They started appearing here in Calgary around 10 years ago.

Yeah, was just going to say, you see these all over Vancouver.

Some concrete companies use their excess concrete to form these blocks and then sell them as well. I know Rempel brothers does this anyway. I've used and reused these blocks a lot and I've found that the Octa blocks hold up better over time when they get stacked and restacked. The + type tend to chip large chunks off of the +.

My parents' new house is made with those (fox block?) and it's incredible. Super quiet inside, and super energy efficient... and they have concrete walls, which is nice in tornado alley.


Just to be pedantic, they dont put cinders in block anymore. Its concrete masonry unit (CMU) now.

Wait, from my left or yours?

I'm not sure I am understanding what you are saying? This is not a shady practice, the customer doesn't feel like they are getting screwed, it's part of the agreement. In fact, it's probably cheaper for the customer to pay for 8 and only need 7, instead of paying for 7 and actually needing 8, because the shorted concrete would cause the slab to be incomplete, and you'd have to start all over.

The customer understands that he/she pays for what they order, regardless, that's the agreement. My point is, that it can be to the concrete producer's advantage to purchase these concrete block molds to make these blocks to sell, instead of just throwing the unneeded concrete in the landfill out back.

Correct, retaining walls and such. They are called "Lock Blocks". Google it.

They are mostly used for retaining walls, but I have seen them used for temporary anchors for structures such as concrete form, since they are quite literally block of concrete weighing in at 2000 lbs that can be placed anywhere with stable ground.

The blocks do not require mortar and they are held together by weight and keys on the top. They are usually used with geo-grid just like other types of retaining wall to prevent lateral movement.

Leftover concrete is smashed up and used as a type of gravel, drainage matrix or erosion prevention material. It rarely gets tossed.

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Just don't go dropping them on your feet

I can tell you that when we write specs, especially for a large project that would use these larger precast block, we require they abide by the specs and request mix design certification in accordance with the spec.

Another post made it sound like it is made with excess concrete. A customer orders 40 yards but only uses 36. All 40 are paid for a mixed so the concrete company casts come blocks with the excess to sell another day.

It is conceivable that some are specifically made for particular jobs that require specific specs while other are made from scrap concrete for those other jobs that do not require specific specs. Markings on the blocks would differentiate the two.

They're just duplo .

I don't think you know who Russians are...

nothing gets by this guy