What is a primary consideration when stacking CMUs?

The primary consideration when stacking Concrete Masonry Units (CMUs) is height restrictions. This aspect is crucial as it influences the overall structural integrity and safety of a masonry wall. Building codes often specify maximum heights for various types of masonry walls, depending on the materials used and the intended use of the structure. Adhering to these restrictions ensures that the wall can support its own weight and any additional loads without risk of failure or instability.

When considering height restrictions, it is vital to also keep in mind factors such as the type of mortar used, the reinforcement included in the wall, and the environmental conditions the structure is expected to withstand. This knowledge helps in designing stable and durable masonry structures that comply with safety regulations and standards.

While moisture content, weight distribution, and color variation are important factors in masonry, they do not outweigh the critical nature of height restrictions when it comes to the stacking and overall performance of CMUs in construction.