The current guidance provided for alignment studies stems largely from Wellington’s “Economic Theory of The Location of Railways” which discusses the problem of minimizing grades and curves on a transcontinental scale. However, modern engineers often find themselves working on a less grand scale with shorter projects such as industrial spur build-ins and urban by-passes, and needing to consider...

In Ghana, freight transport is growing continuously every year due to its location and business processes. However, road carries 86% of despite numerous negative impacts. Hence, the government has invested in rail transport, with 70% capacity for her busy corridor (eastern regions Ghana). Thus, awareness criteria considered when deciding on becomes vital. this study aims improve understanding f...

We study the sawtooth lattice of a coupled spin 1/2 Heisenberg system, a variant of the railroad-trestle lattice. The ground state of this system is twofold degenerate with periodic boundary conditions and supports kink-antikink excitations, which are distinct in this case, unlike the railroad-trestle lattice. The resulting lowtemperature thermodynamics is compared with the recently discovered ...

Diesel exhaust has been suspected to be a lung carcinogen. The assessment of this lung cancer risk has been limited by lack of studies of exposed workers followed for many years. In this study, we assessed lung cancer mortality in 54,973 U.S. railroad workers between 1959 and 1996 (38 years). By 1959, the U.S. railroad industry had largely converted from coal-fired to diesel-powered locomotives...

The researchers express their gratitude to the Association of American Railroads, Dr. Duane Otter, principal engineer at its Transportation Technology Center, Inc., and Mr. Bill Riehl, director of structures for Rail America for extensive assistance in seeking interested railroad owners with potential sites for field investigation of the shear spiking technique. Mr. Tomasz Gawronski, director o...

The recent expansion in the production of shale petroleum crude oil, combined with the lack of new pipeline construction, has placed the railroads at the center stage for safe and efficient transport of very large volumes of this commodity. Petroleum crude oil poses fire risk in the event of train accidents. The consequence modeling based on the US DOT Emergency Response Guidebook (ERG) or ALOH...