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Strongwell - EXTREN DWB® Double Web Beam
Strongwell’s EXTREN DWB® (Double Web Beam) was developed through a three-year cooperative program between Strongwell and the U.S. Department of Commerce’s Advanced Technology Program (ATP). The goal of Strongwell’s ATP project was to design, develop and produce an optimized ï¬ber reinforced polymer (FRP) structural shape for use in heavy structures such as vehicular bridges and offshore drilling platforms. The program included the development of manufacturing processes and equipment to produce this product. The result of Strongwell’s efforts is a double web beam with carbon ï¬bers in the top and bottom flanges for increased stiffness.
The carbon/glass “hybrid” (hybrid refers to the combination of carbon and glass reinforcements) beam has a greatly increased modulus of elasticity and the double web shape has significantly improved the lateral torsional stability of the beam. This increased stability is very significant and reduces the beam’s need for lateral bracing. Strongwell presently produces two different sizes, an 8" x 6" EXTREN DWB® (8” DWB) and a 36" x 18" EXTREN DWB® (36” DWB). Both of these sizes have undergone extensive laboratory testing and have been proven through real-world applications.
