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[citation needed] In the concrete and petroleum industry, however, a bag of cement is defined as 94 lb (43 kg) because it has an apparent volume close to 1 cubic foot (28 litres). [61] When ready-mix concrete is specified, a "bag mix" unit is used as if the batching company mixes 5 literal bags of cement per cubic yard (or cubic metre) when a ...
The placement consisted of 10,251 cubic yards of concrete placed in 58.5 hours using two concrete pumps and two dedicated concrete batch plants. Upon curing, this placement allows the 50,180-square-foot (4,662 m 2 ) cofferdam to be dewatered approximately 26 feet (7.9 m) below sea level to allow the construction of the Inner Harbor Navigation ...
Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks. All concrete structures will crack to some extent, due to shrinkage and tension. Concrete which is subjected to long-duration forces is prone to creep. The density of concrete varies, but is around 2,400 kilograms per cubic metre (150 lb/cu ft). [1]
Twin electric pumps pushed concrete through the pipe at 3,000 pounds (1,400 kg) per 1-square-inch (6.5 cm 2). The pipe could pour 60 to 65 cubic yards (46 to 50 m 3) of concrete per hour. [120] Metal cables running through the still-liquid concrete were vibrated to ensure a flush fit against previously poured concrete and to eliminate voids. [75]
There are 2.3 billion people who reside in nations with water scarcities, which means that each individual receives less than 1,700 cubic metres (60,000 cu ft) of water annually. 380 billion cubic metres (13 × 10 ^ 12 cu ft) of municipal wastewater are produced globally each year.
Nicknamed Queen Marys by the workers who built them, the separation buildings were awesome canyon-like structures 800 feet long, 65 feet wide, and 80 feet high containing forty process pools. The interior had an eerie quality as operators behind seven feet of concrete shielding manipulated remote control equipment by looking through television ...
It recorded a maximum discharge of 2,190 cubic feet (62 m 3) per second in August 2018, and a minimum of 2 cubic feet (0.057 m 3) per second in October 2016; [143] average discharge in 2019 was 82 cu ft (2.3 m 3) per second. [144] The Big Indian stream gauge, the newest on the creek. Downstream, there are two more stations.
The entire bridge required 90,000 short tons (80,000 long tons; 82,000 t) of steel and 460,000 cubic yards (350,000 m 3; 12,000,000 cu ft) of concrete. [94] [275] [276] The decks of each span are all made of concrete panels, which carry track beds with ballast; this was intended to reduce noise pollution and is unusual for a railroad bridge. [277]
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