CRFQ DMT2700000001 Attachment A Spiking Pattern.pdf

This is a technical specification document for railroad tie spiking patterns for the State of West Virginia, related to a contract opportunity to replace 4,000 ties on the SBVR (Shady Bank Valley Railroad) with gage-installed ties. The document outlines five standardized spiking patterns (A through E) that specify the placement and spacing of spikes on railroad ties based on track type, curvature, and speed conditions. Pattern A applies to main tracks on tangents and curves less than 2 degrees with speeds up to 45 mph. Pattern B covers main tracks on tangents and curves less than 2 degrees with speeds greater than 45 mph. Pattern C addresses main tracks on curves of 2 degrees to less than 6 degrees. Pattern D covers main tracks on curves over 6 degrees. Patterns for side tracks are differentiated by speed thresholds of 25 mph or less versus greater than 25 mph, with corresponding spike placements for tangents, curves less than 6 degrees, curves of 6 degrees to less than 12 degrees, and curves over 12 degrees. The document establishes specific spike counts and authorized patterns for both main tracks and sidings, defining main tracks as those extending through yards and between stations where trains operate under standard rules, and sidings as auxiliary tracks designated for meeting or passing operations.

The spiking pattern specifications serve as the technical foundation for the tie replacement project, ensuring compliance with railroad safety and operational standards. These patterns are essential for contractors to understand the exact spike placement requirements when installing the 4,000 replacement ties, as improper spiking can affect track stability, train safety, and maintenance longevity. The document does not contain pricing information, set-asides, funding sources, or other contractual terms, functioning instead as a technical attachment defining the physical specifications that must be met during project execution.