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Bridge scour is the removal of sediment such as sand and gravel from around bridge abutments or piers. Hydrodynamic scour, caused by fast flowing water, can carve out scour holes, compromising the integrity of a structure. [1] In the United States, bridge scour is one of the three main causes of bridge failure (the
NBI is a template that simplifies and better organizes reference calls to the Federal Highway Administration's (FHWA) National Bridge Inventory (NBI), an annually published data set on all bridges at least 20 feet (6.1 m) in length in the United States. This data includes the coordinates of the bridge, bridge type, when the bridge was built and ...
A traveling scoreslip (also called a traveler) is a form used for recording the results of each deal in a duplicate bridge tournament. [1] In these tournaments, the four hands of each deal are placed into a board so that the same deal can be played by different competitors. Each time the deal (or board) is played, the result is entered into the ...
Vermont is seeking an assessment to determine whether last week’s flooding, which damaged homes, knocked down bridges and washed out roads, qualifies for a federal disaster declaration and aid.
The Johnson Street Bridge is a bascule bridge spanning the Victoria Harbour in Victoria, British Columbia. Four known bridges have spanned the narrows between Victoria's Inner Harbour and Upper Harbour, connecting Johnson Street on the east shore with Esquimalt Road on the west shore. [ 1 ]
Collapsed barn at Hörsne, Gotland, Sweden Building collapse due to snow weight. Structural integrity and failure is an aspect of engineering that deals with the ability of a structure to support a designed structural load (weight, force, etc.) without breaking and includes the study of past structural failures in order to prevent failures in future designs.
Bridge strike or tunnel strike (also known as bridge bashing) is a type of transport accident in which a vehicle collides with a bridge, overpass, or tunnel structure. Bridge-strike road accidents , in which an over-height vehicle collides with the underside of the structure, occur frequently and are a major issue worldwide.
Ice jams occur when the ice that is drifting down-current in a river comes to a stop, for instance, at a river bend, when it contacts the river bed in a shallow area, or against bridge piers. Doing so increases the resistance to flow, thereby inducing an increase in water level upstream of the jam (referred to as backwater ).