What is the stacking method that allows stacking items vertically and horizontally while changing direction by 180 degrees?

The stacking method that allows items to be stacked both vertically and horizontally while changing direction by 180 degrees is known as brick type stacking. This method is designed to maximize stability and minimize the risk of collapsing by alternating the alignment of the items in each layer. By rotating every other layer of the stack, the weight distribution is optimized, enhancing the structural integrity of the pile.

Hexagonal stacking and pyramid stacking present different approaches. Hexagonal stacking typically focuses on a tighter arrangement of items that are not conducive to the specified 180-degree turn. Pyramid stacking often emphasizes creating a tapered stack which does not involve changing directions between layers as described in the question. Layer stacking, while useful for structured stacking, does not specifically highlight the 180-degree shift that characterizes the brick type method.

Thus, understanding the mechanics of brick type stacking clarifies why it is the ideal methodology for achieving the described stacking configuration effectively.