GRIDFORM ™ Stay-In-Place Concrete Bridge Deck System

GRIDFORM ™ is a pre-fabricated fiber reinforced polymer (FRP) double-layer grating, concrete-reinforcing system with integral stay-in-place (SIP) form for vehicular bridge decks. The system consists of FRP plates bonded to the bottom grating of FRP double-layer grating panels, creating a bidirectional, lightweight panel for the grid construction of corrosion-free concrete bridge decks. The lightweight GRIDFORM panel, which weighs only 4.7 pounds per square foot, is shop-fabricated in very large units that are limited only by shipping constraints to approximately 50 ft. by 8 ft. When the GRIDFORM arrives on site, it is lifted with a single pick of a crane and placed directly in the bridge girders. The GRIDFORM panel is pre-engineered and detailed to enable rapid attachment to the bridge girders and subsequent concrete placement and forming. The anticipated lifespan of a GRIDFORM bridge deck is several times that of steel reinforced concrete bridge decks since FRP provides a corrosion-free reinforcement system for the concrete.

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