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Lift slab construction (also called the Youtz-Slick Method) is a method of constructing concrete buildings by casting the floor or roof slab on top of the previous slab and then raising (jacking) the slab up with hydraulic jacks. This method of construction allows for a large portion of the work to be completed at ground level, negating the ...
The U.S. Army Corps of Engineers Bay Model is a working hydraulic scale model of the San Francisco Bay and Sacramento-San Joaquin River Delta System. While the Bay Model is still operational, it is no longer used for scientific research but is instead open to the public alongside educational exhibits about Bay hydrology.
Both western catwalks were installed and by mid-August, all four catwalks were installed in place and an approximation of the completed outline of the bridge could then be seen. All four catwalks, the traveler, its suspension cable and the drafting cables and the winches and specialized tracks at the deviation saddles had to be in place before ...
The tremendous hydraulic diggings, visible from near this point, engulfed most of the original townsites. Alpha was the birthplace of famed opera singer Emma Nevada. Mining at Omega continued until 1949, and lumbering operations are carried on there today (1958). California Registered Historical Landmarks Nos. 628-629 [2]
The midspan and tower hydraulic damping mechanisms were also installed, and workers began removing the catwalks, tower buttresses, and other working platforms. Work also progressed at the west end of the bridge, where workers modified the 450-foot-long (140 m) approach viaduct that once had been a part of the 1940 span for use in the 1950 bridge.
1850s - Hydraulic mining in gold region contaminates Sacramento Delta with silt and mercury [10] 1850 - California Indian Protection Act removes Indian's civil rights and enslaves them, starting the mass genocide of many of the state's 300 tribes; 1850 - California adopts British Common Law causing 70 years of disputes over water rights
When it was open, the California Aqueduct Bikeway was the longest of the paved paths in the Los Angeles area, at 107 miles (172 km) long from Quail Lake near Gorman in the Sierra Pelona Mountains through the desert to Silverwood Lake in the San Bernardino Mountains. This path was closed in 1988 due to bicyclist safety and liability issues.
Moving walkway inside the Changi Airport station of the Singapore MRT. A moving walkway, also known as an autowalk, [1] moving pavement, [2] moving sidewalk, [3], travolator, [4] or travelator (British English), [5] is a slow-moving conveyor mechanism that transports people across a horizontal or inclined plane over a short to medium distance. [6]