A wall produced in glazed-headed Flemish bond brickwork sample with numerous shades and lengths. Block is the same phrase referring to an oblong building unit composed of clay or concrete, but is frequently greater than the usual brick. Light-weight bricks (also called lightweight blocks) are produced from expanded clay aggregate. https://beau02nml.vblogetin.com/42307311/the-smart-trick-of-engineering-that-nobody-is-discussing