2020 new field of composite materials application: pedestrian crossing overpass
May 09, 2020
FiberSPAN products replace rotting heavy concrete. The lightweight, zero-maintenance FRP deck allows contractors to use the original steel truss, thereby minimizing the maintenance and labor costs associated with steel upgrades. "Access to the job site is limited," said Scott Reeve, marketing director of Composite Advantage (now part of Creative Composites Group). "It is difficult to operate the FRP panel in place, but precast concrete was originally prohibited. In addition to the entrance problem, pouring concrete will take longer and cause additional interruption and downtime for the train station."
Composite Advantage prefabricated panels are integrally formed with curbs and crowns to discharge water runoff to drain holes with built-in 14 "x 19.7" grooves. Design requirements include a 90 psf active load, a 30 psf wind load and a minimum compressive strength of 150 psi. Both deck decks comply with the ASTM Class II flame spread rating and can operate within a temperature range of -40 ° F to 160 ° F. Both decks have non-slip pedestrian-grade polymer aggregate surfaces.
The north entrance footbridge deck consists of 11 FRP panels with a total length of 138 feet. The South Entrance Bridge deck consists of 33 decks with a total length of 394 feet, including 90-degree turns. Composite Advantage said that design flexibility, beauty, lightness and long service life make FRP a robust choice for Inman Park MARTA station, which has recently reopened to commuters and tourists.