SECTION 033300 - ARCHITECTURAL CONCRETE
Architectural concrete is defined in ACI 303R, Guide to Cast-in-Place Architectural Concrete Practice, as "concrete that will be permanently exposed to view and that requires special care in selection of the concrete materials, forming, placing, and finishing to obtain the desired architectural appearance."
Cast-in-place architectural concrete in the Section Text is limited to formed concrete and its ancillary unformed surfaces. It does not include concrete pavements, decorative concrete pavements, or building slabs with horizontal treated surfaces.
When the Project contains both cast-in-place structural and cast-in-place architectural concrete, this Section may be used to supplement Section 033000 "Cast-in-Place Concrete." Cast-in-place architectural concrete for a project may be achieved in several different ways, such as using special form-facing materials or form liners, colored cements, special aggregates, and colored admixtures or pigments; special mixing, placing, and consolidation of the concrete; and choosing a number of as-cast or applied treatments of formed surfaces. Combined with added field observation by the Architect or the Engineer, it is usually more convenient to segregate requirements for cast-in-place architectural concrete into a separate Section.
This Section must be supplemented with language from the "Cast-in-Place Concrete" Section Text if all cast-in-place concrete on the Project is classified as cast-in-place architectural concrete and will be specified in this Section. Cast-in-place architectural concrete is a site-produced product achieved after a labor-intensive process that combines the skills of many individuals. It can seldom reach the consistent quality level of factory-controlled architectural precast concrete.