Non-Structural Precast Column Covers

Non-Structural Precast Column Covers

Column covers conceal structural columns and may completely surround them on ground level. Typically one-story units, column covers extend between floors or spandrels. In thicknesses of 2" or greater, column covers are most often non-loadbearing. Reveals, articulation, decorative accents, mix design(s) available to meet design requirements.

Overview

• Typical 6" thickness or greater
• Aesthetic flexibility; multiple finishes, colors, textures and shapes
• Separate insulation system required

Applications

Column covers are typically non-loadbearing, but may be adapted to support covers on floors above or adjacent spandrels.

Cost: $$-$$$$

Technical Overview

Connections

Connections are typically welded or bolted

Concrete

Mix: architectural face mix; structural back mix with EcoMix® (up to 50% supplementary cementitious materials recycled content, per design requirements)

Water-cement ratio: <.38

Strength: 7-9,000 psi

Color: per Architect requirements

Specifications:

Certification . . . . . . . . . . . . . . . . . PCI Factory Certification

Design. . . . . . . . . . . . . . . . . . . . . .ACI 318-95

Prestress strand . . . . . . . . . . . . . .ASTM A 416

Reinforcing steel. . . . . . . . . . . . . .ASTM A 615

Welded wire fabric . . . . . . . . . . . .ASTM A 185

Structural steel . . . . . . . . . . . . . . .ASTM A 36

Aggregate. . . . . . . . . . . . . . . . . . .ASTM C 33

Cement. . . . . . . . . . . . . . . . . . . . .ASTM C 150 Materials

Dimensional Tolerances:

Horizontal alignment:

Position of Weld Plates: ±1 in.

Options

Varying thicknesses – interior and exterior wythes are typically 1-3/4” thick. The exterior wythe can be thickened to accommodate architectural details.

Shapes – an assortment of architectural elements such as cornices, bullnoses and reveals can be cast into the concrete carefully and cost-efficiently.

Embedded finishes and veneers – stone, tile and thin brick can also be used as well as simulated limestone or granite.

Panel orientation – typical orientation will be horizontal; vertical orientation is possible.

Prefinished interior wythe – a steel-trowel treatment during manufacturing imparts a smooth, durable, surface ready for paint or wallcovering and is ideal for applications such as dormitories and apartments.

Grouted connection tubes – prefabricated plastic forms, fit into foundations and panels to facilitate connection (uat.highconcreteaccessories.com)

LEED

LEED®

Potential precast point contributions to LEED 2009 certification:

LEED is a registered trademark of the US Green Building Council.