Because of their aerodynamic design, some modern racing cars create enough vacuum to lift a manhole cover off its recess. During races on city streets, manhole covers must therefore be welded or locked down to prevent injury. In 1990, during the Group C World Sportscar Championship race at Circuit Gilles Villeneuve (located in a public park in Montreal, Quebec), a Brun Motorsport Porsche 962 struck a manhole cover that was lifted by the ground effect of the car he was following, a Courage C24 Porsche. This caused the trailing Porsche to catch fire, and safety issues ended the race shortly afterwards.[citation needed]
Key Characteristics of Gate Valves
In the realm of construction and infrastructure, recessed covers and frames play a pivotal role in creating safe, functional, and aesthetically pleasing environments. These components are essential in various applications, ranging from architectural designs to utility access points. This article delves into the significance, types, and benefits of recessed covers and frames.