Fiscal Year 2014

This action plan articulates the most significant ecosystem problems for the Great Lakes, and describes efforts to address them. The five areas are toxic substances, invasive species, health and pollution, wildlife and habitat preservation and restoration, and finally a component that covers accountability and evaluation

Development Length Variables in Pretensioned Concrete Ties [Research Results]

This research, conducted from 2011 to 2015, is part of a larger project, \u201cQuantifying the Effect of Prestressing Steel and Concrete Variables on the Transfer Length in Pretensioned Concrete Crossties,\u201d conducted by Kansas State University (KSU) and sponsored by the Federal Railroad Administration (FRA). This report highlights advances in quantifying the development length in pretensioned concrete railroad ties. This information is needed to accurately determine the nominal flexural capacity of these ties along their length. Experimental results from load tests on pretensioned, prestressed concrete prisms revealed a significant relationship between wire reinforcement type and concrete release strength on the development length and flexural capacity of the reinforced concrete specimens. A full technical report of this research may be found on the K-State Research Exchange