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Structural failure — support piers collapsed 7 killed, 0 injured Complete failure of two spans on I-5 Due to extreme rainfall, the Arroyo Pasajero experienced high volumes of water at high speed. This caused scouring of the river bed undermining the support piers of both spans. Elhovo bridge over the Tundzha river [43] Elhovo, Yambol Province
Completed falsework: Decking and some formwork has been added. The illustrations are of modern pipe-column falsework, used to support the formwork for a post-tensioned reinforced concrete flyover connector for the eastern span replacement of the San Francisco-Oakland Bay Bridge. When the supports are complete, wood beams and plywood or reusable ...
Since the wooden or metal form that supported the casting of the concrete was elevated, the forms were supported on falsework, in this case using vertical pipe sections, steel beams, and diagonal cables. A wooden deck was then erected atop the falsework to support the lowest forming surface.
This is a list of structural failures and collapses of buildings and other structures including bridges, dams, and radio masts/towers. This is a dynamic list and may never be able to satisfy particular standards for completeness.
The bridge was part of a viaduct built by contractor Marples Ridgway in Reading, Berkshire, as part of the A329(M) motorway, a link road to the M4 motorway to the east. The eastbound and westbound carriageways and a separate on-slip to the westbound carriageway were all constructed on separate post-tensioned reinforced concrete viaduct structures.
Infrastructure includes the basic physical and organizational structures needed for the operation of a society or enterprise, [1] or the services and facilities necessary for an economy to function.
On June 8, 1978, OSHA cited Willow Island contractors for 20 violations, including failures to field test concrete and anchor the scaffold system properly. The cases were settled for $85,500, or about $1,700 per worker killed.
Fifty-one people were killed in these failures, leading in the UK to the formation of the Merrison Committee [4] and considerable investment in new research into steel box girder behaviour. Most of the bridges still under construction at this time were delayed for investigation of the basic design principle.