NPG Innovations
Helping to Sustain Planet Earth
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The Engineering Test ties located on the NYSWR in Lafayette, NY during to perform after 10 years of service.  The rail
spikes show no signs of loosening and ties have not moved.  More recently installed wood ties are already showing
signs of spike loosening.  These pictures were taken on May 26, 2014.
3 degree curve ties.  No signs of spike or
tie movement.
3 degree curve ties.  No signs of spike loosening.
Tangent section tie.  No signs of spike loosening.
Adjacent wood ties.
Discarded wood ties.