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Retaining wall design near railroad tracks

Retaining wall design near railroad tracks

Retaining wall design near railroad tracks

(OP)
AREMA states that for members receiving load from four tracks, use full live load for two tracks, then half on the third, and a quarter on the fourth.  Unless, however, the tracks are "widely spaced" in which case it is permissible to use only the full live on the nearest two tracks.  I have looked, but cannot seem to find how "widely spaced" is defined.  Can someone point me in the right direction?

RE: Retaining wall design near railroad tracks

14 feet is a minimum center to center for straight tracks, 17 feet is a minimum for center to center for 400 foot radius curves and tighter curves need greater spacing.  I would assume 150% of minimum would qualify as widely spaced.

RE: Retaining wall design near railroad tracks

(OP)
Fantastic!  Thank you so much civilperson!

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