レンガ積み

A wythe is a vertical stack of bricks with a thickness of one brick unit. It forms the basic building block of brick masonry walls. Wythes can be laid individually for single-layer walls or bonded together with multiple wythes to create thicker, more stable structures.

Headers are bricks positioned perpendicular to the wall that interconnect multiple wythes, strengthening the assembly. By running through the thickness of the wall, headers tie wythes together and enhance structural stability. They are essential components of bonding patterns used in multi-wythe construction.

Common bond uses a header course every five stretcher courses with three-fourth brick closers at corners. English bond alternates header and stretcher courses throughout, using Queen closers to prevent vertical joint alignment. Both patterns enhance structural integrity, but English bond provides more consistent bonding across the wall.

Flemish bond alternates headers and stretchers within each individual course rather than alternating entire courses. Three-fourth brick closers are placed at corners. This pattern combines structural strength with aesthetic appeal, transforming simple brick walls into visually distinctive structures that enhance both performance and appearance.

Metal ties or reinforcements interconnect brick wythes to enhance wall stability and structural integrity. They provide an alternative to traditional bonding patterns for multi-wythe construction. Modern masonry often employs metal reinforcements alongside or instead of traditional bonding techniques for improved structural performance.

A stretcher course is the most common brick arrangement where bricks are laid with their longer edge horizontal and their face parallel to the wall direction. This orientation creates a simple, economical wall pattern. Stretcher courses form the foundation of many bonding patterns in brick masonry construction.

Bonding patterns enhance both structural integrity and aesthetic value of brick walls. When used creatively, patterns like common bond, English bond, and Flemish bond transform simple brick walls into visually distinctive structures. The running bond is popular in modern masonry for its economical and aesthetic appeal.