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A double tee or double-T beam is a load-bearing structure that resembles two T-beams connected to each other side by side. The strong bond of the flange and the two webs creates a structure that is capable of withstanding high loads while having a long span. The typical sizes of double tees are up to 15 feet for flange width, up to 5 feet for web depth, and up to 80 feet or more for span length. Double tees are pre-manufactured from prestressed concrete which allows construction time to be shortened.
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