It is not uncommon to create designs with an h/t from 32 to 50. That could produce wall heights of up to 33 feet for walls built with 8-inch concrete masonry units

How high can you stack cinder block?

Without support, you can stack the blocks on top of each other up to around 4 feet, but there are other concerns above and beyond simple height that can affect the stability of the wall.

Can you stack concrete blocks?

The use of cinder blocks in wall assemblies is quite common, and with good reason. Manufactured cinder blocks are an extremely effective building material for use in the building of strong, solid, long-lasting walls. Proper stacking of these blocks is essential to ensure the longevity of your wall.