Anew 12-hammer pile-driving device, called the DodecaKong, has begun driving 30-meter-dia steel-pipe piles for an artificial island that will host a new airport in Sanya, China.
Many of us have experienced that proverbial “lightbulb moment,” a flash of insight when the complexities of a new or challenging concept finally make sense.
Two separate failures of three cantilevered flanges of three precast, prestressed-concrete double-T parking-deck sections—reinforced with a non-code-compliant, high-strength carbon-fiber-reinforced polymer grid—are putting the spotlight on the structural safety of corrosion-resistant FRP grids for transverse reinforcement of double-Ts.