Sentence examples for track ballast from inspiring English sources

Three days a week, tour groups step nimbly over track ballast and railroad ties, past discarded spikes and old steel plates.

Only a telltale alteration in the colour and texture of the earth, or a slightly raised mound that marks the line of track ballast across which sleepers would have been laid, provides evidence of what was once a working line.

Woodward is reported as saying that speeds as high as those planned by HS2 could cause "rapid deterioration of the track, ballast and sub-ballast, including possible derailment and ground failure".

Further, a DEM program was used to evaluate the effect of the crosstie rotations on track ballast.

This paper describes the use of Spectral Analysis of Surface Wave (SASW) for characterizing rail track ballast and foundation layers.

Rail Threshold (mm) <1 1–30 30–150 >150   No damage Possible abrasion and/or corrosion of railway tracks and signals, jamming of mechanical signals and contamination of track ballast.

By assigning laboratory calibrated model parameters to the "half-track" ballast sample generated in DEM, effects of different fouling percentage as well as different fouling locations on ballast settlement performance are studied.

The paper also considers stationary and non-stationary liquid weepage into railroad tracks ballast section and spilled petroleum products spreading.

The particular attention is paid to liquid which concentrates on the surface of railroad tracks ballast section as a result of atmospheric precipitation.

The installation of more than 13 miles of new cables, the design and installation of a temporary signalling system and the replacement of more than 700 metres of track and ballast.

Track and ballast properties, overhead line and pylon properties (if electric), gradient, station facilities, track-locomotive communications, collision avoidance systems.