Preliminary Impact Load Assessment of Ballast Deck Prestressed .Preliminary Impact Load Assessment of Ballast Deck . Test Train Over the State-of-the-Art Concrete Bridge at FAST .. values follow the trend of AREMA 2005.impact value for concrete brigde,A Simple Analysis of the Effect of Construction Materials on Bridge .Table 3.1. Ratio of impact factor of bridges built of three materials normalized to concrete design (each bridge design has different natural frequencies).FINAL REPORT STRUCTURAL LOAD TESTING AND FLEXURE .concrete bridge designs they have been a popular choice where materials were ... the common maximum impact factor is considered to be approximately 0.3.
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