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A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.
The 1540 drought in Europe was a climatic event in Europe. In various palaeoclimatic analyses the temperature and precipitation regimes were reconstructed and compared to present-day conditions. On the basis of historical records Wetter et al. (2014) [ 1 ] derived that during an eleven-month period there was little rain in Europe , possibly ...
Electronic components used to make a simple water detector: battery, resistor, transistor, water sensor and piezoelectric buzzer for audible alert A water detector is an electronic device that is designed to detect the presence of water for purposes such as to provide an alert in time to allow the prevention of water leakage.
A flood warning is closely linked to the task of flood forecasting.The distinction between the two is that the outcome of flood forecasting is a set of forecast time-profiles of channel flows or river levels at various locations, while "flood warning" is the task of making use of these forecasts to make decisions about whether warnings of floods should be issued to the general public or ...
The north bound entrance of SMART Tunnel on the Kuala Lumpur–Seremban Expressway. World's First Dual-Function Tunnel (Stormwater Management & Road) Longest tunnel in Malaysia; 9.7 km (6.03 miles) stormwater by-pass tunnel; 4 km (2.49 miles) double-deck motorway within stormwater tunnel; The motorway tunnel is suitable for light vehicles only.
Mechanical fans can be used to provide positive pressure ventilation by breaking or removing windows, skylights or heat/smoke vents on the roof; or by cutting new exhaust vents in the building. If there is no suitable existing hole, firefighters may use their equipment to make one, such as specialized saws for cutting a large hole in the roof.
Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces. Lighting control systems are sometimes referred to under the term smart lighting. Lighting control systems serve to provide the right amount of light where and when it is needed. [1]
In Australia, the Bureau of Meteorology issues a flood watch that covers similar conditions to flood watches in the United States. However, they are known by slightly different names in some areas. In Europe, there is the European Flood Awareness System and the commercial product including app and data services FloodAlert. [3]