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  2. Federal Bridge Gross Weight Formula - Wikipedia

    en.wikipedia.org/wiki/Federal_Bridge_Gross...

    Most bridge collapses occur in rural areas, result in few injuries or deaths, and receive relatively little media attention. While the number varies from year to year, as many as 150 bridges can collapse in a year. About 1,500 bridges collapsed between 1966 and 2007, and most of those were the result of soil erosion around bridge supports.

  3. Bridge scoring - Wikipedia

    en.wikipedia.org/wiki/Bridge_scoring

    However, a "game" is always triggered when 100 contract points are reached, a "partial game" or "part-score" refers to 10 to 90 contract points, and once either side reaches a game, both sides' part-scores, while still valid to be counted as part of the final score of the entire match, are reset to 0 for the purpose of the next game or rubber ...

  4. Bridge (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Bridge_(graph_theory)

    A graph with 16 vertices and six bridges (highlighted in red) An undirected connected graph with no bridge edges. In graph theory, a bridge, isthmus, cut-edge, or cut arc is an edge of a graph whose deletion increases the graph's number of connected components. [1] Equivalently, an edge is a bridge if and only if it is not contained in any cycle.

  5. Contract bridge probabilities - Wikipedia

    en.wikipedia.org/wiki/Contract_bridge_probabilities

    Let ′ (,,,) be the probability of an East player with unknown cards holding cards in a given suit and a West player with unknown cards holding cards in the given suit. The total number of arrangements of (+) cards in the suit in (+) spaces is = (+)!

  6. List of bridge failures - Wikipedia

    en.wikipedia.org/wiki/List_of_bridge_failures

    Following the collapse, PennDOT ordered reviews of structural adequacy for five other bridges with similar designs to the Fern Hollow Bridge immediately; those five bridges were found to be in "fair" condition at their last inspections. Replacement bridge opened 20 December the same year. Loay-Clarin Bridge Loay, Bohol: Philippines: 28 April 2022

  7. Bridge number - Wikipedia

    en.wikipedia.org/wiki/Bridge_number

    In bridge representation, a knot lies entirely in the plane apart for a finite number of bridges whose projections onto the plane are straight lines. Equivalently, the bridge number is the minimal number of local maxima of the projection of the knot onto a vector, where we minimize over all projections and over all conformations of the knot.

  8. Parabolic arch - Wikipedia

    en.wikipedia.org/wiki/Parabolic_arch

    Bridges have used a variety of arches since ancient times, sometimes in very flat segmental arched forms but rarely in the form of a parabola. A simple hanging rope bridge describes a catenary, but if they were in the form of a suspension bridges they usually describe a parabola in shape, with the roadway hanging from the inverted arch. Modern ...

  9. Grade (slope) - Wikipedia

    en.wikipedia.org/wiki/Grade_(slope)

    Grade is usually expressed as a percentage - converted to the angle α by taking the inverse tangent of the standard mathematical slope, which is rise / run or the grade / 100. If one looks at red numbers on the chart specifying grade, one can see the quirkiness of using the grade to specify slope; the numbers go from 0 for flat, to 100% at 45 ...