Masonry bearing walls used to have header courses every 7 rows. What has made this header course no longer necessary?

Masonry bearing walls traditionally included header courses every seven rows to provide necessary lateral support and stability. However, the introduction of masonry wire trusses has made these header courses less critical.

Masonry wire trusses are designed to provide tensile strength and distribute loads evenly across the masonry structure. These trusses can enhance the structural integrity of the wall by eliminating the need for frequent header courses to address load requirements. By using wire trusses, the overall design of masonry walls can be improved, allowing for greater flexibility in construction without sacrificing strength.

Other construction methods, while effective in their own right, do not address the specific function served by header courses in masonry walls in the same way that masonry wire trusses do.