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The design proposed was an elevated viaduct consisting of reinforced concrete columns and precast concrete segment spans as seen in the illustration at right. The design criterion was that the new bridge should survive an 8.5 magnitude earthquake on any of several faults in the region (particularly the nearby San Andreas and Hayward faults).
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams, and wall panels, floors, roofs, and piles.
A finished tilt-up building. Tilt-up, tilt-slab or tilt-wall is a type of building and a construction technique using concrete.Though it is a cost-effective technique with a shorter completion time, [1] poor performance in earthquakes has mandated significant seismic retrofit requirements in older buildings.
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 first reinforced concrete building in Southern California was the Laughlin Annex in downtown Los Angeles, constructed in 1905. [ 16 ] [ 17 ] In 1906, 16 building permits were reportedly issued for reinforced concrete buildings in the City of Los Angeles, including the Temple Auditorium and 8-story Hayward Hotel.
Remove center columns supporting upper deck; Lower the upper deck by 16 inches (410 mm) by placing precast concrete units; After the reconstruction, the tunnel would handle only road traffic. The upper deck was lowered to accommodate heavy truck traffic, as each deck would now carry five lanes of unidirectional traffic.
Column: California's water usage was built on a historic lie. The cost is now apparent. Michael Hiltzik. September 21, 2022 at 9:00 AM. The water intakes of Hoover Dam on Lake Mead, and the ...
These are recognizable by their precast concrete columns and by their walls made of precast "ship-lap" concrete panels. Assam-type House: an earthquake-resistant house type commonly found in the northeastern states of India; Bastle house: a fortified farmhouse found in England and Scotland