Editing Concrete block (section)

== Uses ==
{{Unreferenced section|date=August 2021}}

Concrete block, when built with integral [[Rebar#Use in concrete and masonry|steel reinforcement]], is a very common [[building material]] for the [[load-bearing wall]]s of buildings, in what is termed ''concrete block structure'' (''CBS'') construction. One of the common foundation types for American [[suburban]] [[houses]] is the "crawl space foundation" which consists of a concrete block wall on the perimeter on which dimensional lumber floor joists are supported. [[Retaining wall]]s, which can also be constructed of concrete blocks, can be constructed, either using blocks designed to be set back each course and used with a sand base and without mortar or reinforcing (gravity wall), or using blocks (typically an architectural style of block or clad with a veneer such as brick) with a concrete base, steel reinforcing and mortar (piling wall). Other very common, non-structural uses for concrete block walls (especially in American schools) are as interior fire-rated and extremely durable partition walls, and as exterior backup curtain walls for attachment of building envelope systems (rigid foam insulation and an air/vapor barrier) and veneers (stucco, steel, brick, or split-face concrete block).