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A1
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Architectural Precast Concrete Products
Includes exterior cladding, loadbearing and non-load-bearing wall panels, spandrels, beams, columns, and all products covered in AT.
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AT
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Miscellaneous Architectural Trim Units
Includes mullions, bollards, urns, railings, sills, copings, benches, planters, pavers, and other types of miscellaneous shapes.
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B1
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Precast Bridge Products (No Prestressed Reinforcement)
Mild-steel-reinforced precast concrete elements, including some types of bridge beams or slabs, as well as products such as piling, sheet piling, pile caps, retaining-wall elements, parapet walls, and sound barriers.
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B2
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Prestressed Miscellaneous Bridge Products (Non-Superstructure)
Any precast, prestressed elements except for superstructure beams. This includes piling, sheet piling, retaining-wall elements, stay-in-place bridge deck panels, full-depth deck panels, and all products covered in B1.
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B3
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Prestressed Straight-Strand Bridge Beams (Superstructure)
All precast, prestressed superstructure elements using straight, pretensioning, or post-tensioning strands such as box beams, I-girders, bulb-tee beams, stemmed members, solid slabs, segmental box beams, and all products covered in B1 and B2.
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B4
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Prestressed Deflected-Strand Bridge Beams (Superstructure)
Precast concrete bridge members that are reinforced with deflected pretensioning or post-tensioning strand. Included are box beams, I-girders, bulb-tee beams, stemmed members, solid slabs, and all products in B1, B2, and B3.
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BA
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Bridge Products with an Architectural Finish
These products are the same as those in Group B, but they are produced with an architectural finish. They will have a form, machine, or special finish. Certification for Group BA production supersedes Group B in the same category.
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C1
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Commercial Precast Concrete Products (No Prestressed Reinforcement)
Conventionally reinforced precast concrete elements, including piling, sheet piling, pile caps, retaining-wall elements, floor and roof slabs, joists, stairs, seating members, columns, beams, walls, spandrels, and similar products.
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C2
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Commercial Prestressed Hollow-Core and Repetitively Produced Products
Precast concrete products that are prestressed with straight, pretensioning, or post-tensioning strands. Included are hollow-core slabs for floor, roof, and wall construction that maybe wet cast, machine cast, extruded, or slip formed. Other products include railroad ties, flat slabs, wall panels, utility poles, and all products in C1.
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C3
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Commercial Prestressed Straight-Strand Structural Members
Precast concrete structural members that are prestressed with straight, pretensioning, or post-tensioning strands. Included are stemmed members for roofs, floors, and walls, as well as beams, columns, spandrels, joists, seating members, and all products in C1 and C2.
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C4
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Commercial Prestressed Deflected-Strand Structural Members
Precast concrete structural members made with deflected pretensioning or post-tensioning strands for roofs and floors, beams, joists, and all products in C1, C2, and C3.
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CA
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Commercial Products with an Architectural Finish
These products are the same as those in the categories within Group C, but they are produced with an architectural finish. They will have a form, machine, or special finish. Certification for Group CA production supersedes Group C in the same category.
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