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Less material usage
Uses less material without sacrificing strength.
Structural
Double Tees
Achieve heavy loads and long spans.
What is a precast double tee?
Double tees are precast structural pieces with efficient sections typically used as framing to achieve long spans. Consisting of two beam elements and a flat deck, double tees are used for a variety of building types, from highly loaded structures with assembly or storage loads to lightly loaded roofs with over 100 ft spans. The prestressing steel incorporated during manufacturing of the double tee results in increased durability and longevity over the lifetime of the structure.
Double Tee Design Guide
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Explore the Double Tee Design Guide
Double Tee Options for Your Structural Needs
Double tee flanges can be designed as the structure’s primary diaphragm with varying thicknesses to transfer loads to the lateral system of the structure. In most cases, double tees can accommodate heavier loads on the double tee deck than CMU. For flexibility of framing, the widths of double-tees are variable: from a 12-ft-wide module to 6-ft-wide. Even narrower sections can be achieved with additional engineering support. Depending on the structure demands, double tees can have depths ranging from 10” for building types requiring shallower floor systems to 42” to accommodate higher loads or longer spans, eliminating the need for additional structural elements.
Double tees can have a variety of finishes depending on the detailing and final state of the project. From a raked finish to allow for composite action to be achieved with field topping to a broom for a finished driving surface.
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Ideal Project Types for Double Tees
Parking Garages
Natatoriums
Gymnasium Roofs
Bridges
Industrial
Manufacturing
Structural Benefits
Double tees offer efficient structural performance, combining long-span capability with reduced material use and design flexibility.
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Long spans
Allows for open, column-free spaces.
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Varying cross sections
Flexible shapes for different needs.
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Fire resistant
Achieve multi-hour fire ratings as needed.
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MEP integrations
Accommodate MEP components with openings during manufacturing.