To receive the jamb of a door or window frame

To shed rainwater from a sill

To serve as a bearing surface in the finishing course of a foundation wall

To construct the top or finishing course of a masonry wall

A concrete masonry unit split lengthwise by a machine after curing to produce a rough, fractured face texture

A concrete masonry unit having a solid top and a slotted face shell for increased sound absorption

A concrete masonry unit with a special ceramic, glazed, or polished face

A concrete masonry unit having an irregular face and surface texture caused by the settlement of a wet mix

To determine the fire resistance of a wall constructed with such units

To absorb water when immersed in water

To serve as a beam, a horizontal tie, or a bearing course for structural members

To construct lintels or bond beams

General use in exterior walls above and below grade

Made with sand, gravel, or other dense aggregate and weighing more than 125 pcf

Use above grade, in exterior walls with weather-protective coatings, or in walls not exposed to the weather

Manufactured to a specified limit of moisture content to minimize drying shrinkage