Cinder Block Maximum Weight facing

[nao57]

So most of you know what cinder blocks are. People use them for back yard projects like building simple coops, or simple backyard tricks, including sometimes even as beehive stands.

I wanted to ask...

Do you get the best weight allowance using them with the two square holes facing up, or by having the flat full complete no hole side facing up?

Growing up I see people mostly have the two holes facing up but I don't know if anyone's ever actually stated that they knew if that was better tor not.

What do you think?

 

[Matejka]

I have wondered the same thing. Good question! I don't have an answer, but I always use 2 holes up-it seems stronger.

 

[nao57]

I have wondered the same thing. Good question! I don't have an answer, but I always use 2 holes up-it seems stronger.

Thank you.

 

[RRM]

Concrete blocks (cinder blocks) are designed to be placed with the holes vertical for strength. The holes in the block are there by design, and allow for vertical rebar placement when building walls and the holes with rebar are grouted full for additional structural strength.
A concrete block sitting on its “flat” side as very little strength, tap it with a hammer and it will break very easily.