Bridge Engineering: Construction and Maintenance (Principles by W.F. Chen, Lian Duan

By W.F. Chen, Lian Duan

The foundations and alertness in Engineering sequence is a sequence of handy, low-priced references sharply serious about specific engineering issues and subspecialties. every one quantity during this sequence contains chapters rigorously chosen from CRC's bestselling handbooks, logically prepared for max comfort, and thoughtfully priced to slot each funds. From the award-winning Bridge Engineering guide, Bridge Engineering: development and upkeep takes an in-depth examine the development engineering and upkeep points of metal and urban bridges. issues comprise potent venture administration, development systems and practices, development and upkeep inspections and scores, and bridge strengthening and rehabilitation.

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Extra info for Bridge Engineering: Construction and Maintenance (Principles and Applications in Engineering)

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41A Leading end of north girder train moves across 250 ft (76 m) span 4, approaching pier 5. Main span, 330 ft (101 mm), is to right of pier 5. 41B Launching nose rides up onto pier 5 skidway units, removing girder-train leading-end sag. 41C Leading end of north girder train is now supported on pier 5. 42 Erection strengthening to withstand launching, Kansas City Southern Railway box-girder bridge, near Redland, Okla. 41). 42A Typical assumed erection loading of box-girder web panels in combined moment, shear, and transverse compression.

About 20,000 tons of steelwork fell into the St. Lawrence River, and 75 workmen lost their lives. Note that member forces attributable to wind are treated the same as those attributable to gravity loads. The old concept of “increased allowable stresses” for wind is not considered to be valid for erection conditions and is not used in the ERF procedure. Maximum acceptable l/r and b/t values are included in the criteria. ERFs for members subjected to secondary bending moments are calculated using interaction equations.

Turntables 11 contain “left-hand” coils of wire and turntables 13 contain “right-hand” coils, such that wire cast is balanced in the formed strand. Fairleads 23 and 25 guide the wires into half-layplates 27 and 29, followed by full layplates 31 and 32 whose guide holes delineate the hexagonal shape of final strand 41. (b) Elevation view of PWS facility. Hexagonal die 33 contains six spring-actuated rollers that form the wires into regular-hexagon shape; and similar roller dies 47, 49, 50, and 51 maintain the wires in this shape as PWS 41 is pulled along by hexagonal dynamic clamp 53.

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