PAGE 168

What is a stretcher block?

• A concrete masonry unit with rounded exterior corners

• A concrete masonry unit used in constructing non-load-bearing walls

• A concrete masonry unit with nominal dimensions of 8 x 8 x 16 in.

• A concrete masonry unit having solid end face used in constructing corners

What is the purpose of a coping block?

• 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

What is a sound-absorbing masonry unit?

• 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

What is the equivalent thickness of a hollow masonry unit used for?

• 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

What is the Grade S concrete masonry unit suitable for?

• 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