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  • Dead load of rails is not calculated/included.

  • Fatigue for railway loads uses half of the input maximum DLA for both specifications.

  • Maximum DLA when calculated by specification is 1.0 for both specifications. It starts at 1.0 at bottom of ballast/top of fill and reduces linearly down to 0.0 at 2m fill depth.

  • For AS1597, default ballast load factors are assumed to be those of AS5100 (1.7max, 0.7min).

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