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The system comprises a collection of water reservoirs, pump stations, cisterns, suction connections and fireboats. While the system can use fresh or salt water, it is preferential not to use salt water, as it commonly causes galvanic corrosion in fire equipment. [2] Blue-topped AWSS fire hydrant in the Mission district of San Francisco.
Trucks weigh 9,100 to 14,000 kilograms (20,000 to 30,000 lb), and can carry roughly 20,000 kilograms (40,000 lb) of concrete although many varying sizes of mixer truck are currently in use. The most common truck capacity is 10 cubic yards (7.6 m 3). Most concrete mixers in the UK are limited to a speed of 90 kilometres per hour (56 mph).
A volumetric concrete mixer (also known as volumetric mobile mixer) is a concrete mixer mounted on a truck or trailer that contains separate compartments for sand, stone, cement and water. On arrival at the job site, the machine mixes the materials to produce the exact amount of concrete needed.
Ready-mix concrete (RMC) is concrete that is manufactured in a batch plant, according to each specific job requirement, then delivered to the job site "ready to use". [1] There are two types with the first being the barrel truck or in–transit mixers. This type of truck delivers concrete in a plastic state to the site. [2]
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These water tenders are able to operate relatively independently. Some water tenders actually combine a fire engine and water tender. This kind of unit may have seats for up to six firefighters, a water tank of more than 2,900 U.S. gallons (2,400 imperial gallons; 11,000 liters), and basic equipment for firefighting and rescue. [6]
London Fire Brigade fireboat, River Thames, London Toronto Fireboat WL Mackenzie Onboard view of Fireboat John J. Harvey in Tauba Auerbach dazzle camouflage performing a water pumping demonstration in Oyster Bay, New York with artificial rainbow visible Italian fireboat CLASS M A fireboat of the fire department of Frankfurt, Germany HKFS fireboat Excellence San Francisco fireboat Phoenix ...
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