Why bricks are not parallel?

you got home? you know that every house is built using bricks. never seen a stone-brick parallel arrangement? certainly never

Are you wondering why the bricks are not always aligned, and why not put them straight?

This is because if the bricks are arranged straight at the bottom or top, then the building will easily collapse.

With the arrangement of alternating or parallel, eating bricks brick supports others in above or next to it.

It is intended to support the thrust force and compressive force issued by each brick.

If bricks are arranged in parallel, so if a little touch to be easily shaken and not be able to be composed of more than one meter high.