The OTR Concrete Deck is well suited for resisting corrosion and rust and generally requires less maintenance than steel decks, helping to extend the life of the scale. A concrete surface also yields better traction in wet and icy conditions. Because of their design, concrete decks distribute the load over a wider area than steel decks. Concrete decks are poured at the job site and typically have cure strength of 4,000 PSI at 28 days. The concrete is reinforced with steel rods and a minimum of two wide-flange main beams and seven wide-flange beams below.
Designed and built to federal bridge standards, the full 6” thick reinforced concrete deck of the OTR encases hundreds of 3/4” shear studs welded to the supporting 6” I-beams, creating a monolithic 12” thick rigid weighbridge. The concrete deck design incorporates galvanized steel sheets working in conjunction with I-beams to ensure that concrete remains above the neutral axis of the weighbridge. Concrete functions best when it remains above the neutral axis in a compression application. The flexing of tension loading can damage any concrete that extends below the neutral axis. The eventual cracks caused by this flexing would lead to deterioration of the deck and eventual scale failure.