Performing such jobs as, fireplaces, stonework, block foundations, concrete, brick

Masonry

Masonry is the building of structures from individual units, which are often laid in and bound together by mortar;
The common materials of masonry construction are
brick, building stone such as marble, granite, travertine, and limestone, cast stone, concrete block, glass block, and adobe. Masonry is generally a highly durable form of construction.
Masonry [1] is commonly used for walls and buildings. Brick and concrete block are the most common types of masonry in use in industrialized nations and may be either weight-bearing or a veneer. Concrete blocks, especially those with hollow cores, offer various possibilities in masonry construction. They generally provide great compressive strength, and are best suited to structures with light transverse loading when the cores remain unfilled. Filling some or all of the cores with concrete or concrete with steel reinforcement (typically rebar) offers much greater tensile and lateral strength to structures.

From Wikipedia



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