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The most common type of floodlight was the metal-halide lamp, which emits a bright white light (typically 75–100 lumens/Watt). Sodium-vapor lamps are also commonly used for sporting events, as they have a very high lumen to watt ratio (typically 80–140 lumens/Watt), making them a cost-effective choice when certain lux levels must be provided. [4]
A flood barrier, surge barrier or storm surge barrier is a specific type of floodgate, designed to prevent a storm surge or spring tide from flooding the protected area behind the barrier. A surge barrier is almost always part of a larger flood protection system consisting of floodwalls , levees (also known as dikes), and other constructions ...
Pavement lights (UK), vault lights (US), floor lights, or sidewalk prisms are flat-topped walk-on skylights, usually set into pavement (sidewalks) or floors to let sunlight into the space below. They often use anidolic lighting prisms to throw the light sideways under the building.
Southeast Texas has been hit with heavy rains and rising rivers, leading to school closings, high-water rescues and mandatory evacuation orders in some areas. Here's a look at the situation ...
Flooding in St. Petersburg, Russia, during the 1824 flood. The new Saint Petersburg Dam was built to stop the frequent floods in the city, which had often devastated the city. It was first used on November 28, 2011, just months after it was completed, and limited storm water rise to below flood level. [20]
A fallen tree blocks an intersection on September 11, 2024 in Houma, Louisiana. Hurricane Francine has been upgraded to a Category 2 hurricane and continues to make landfall along the Louisiana coast.
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