Concrete Cinder Block Illustration - Construction Material Diagram #49236 (License: Personal Use)

This black-and-white technical illustration shows a standard concrete cinder block-also known as a hollow concrete masonry unit (CMU)-viewed at an isometric angle. The block features three parallel rectangular voids running through its length, reducing weight while maintaining structural integrity, and a stippled surface indicating aggregate composition. End faces display vertical ribbing, typical of molded units for mortar adhesion.

Used in construction manuals, architectural education materials, building code documentation, and contractor websites to visually explain CMU specifications, load-bearing properties, or installation methods. Matches user intent for learning, specifying, or sourcing masonry components.