to centre. The rails are of wrought-iron, in 1Gsimilar to fig. G ; width of top 2^ inches, base 3\inches, narrowest part A in., and height 3i inches ;weight, 40 lbs. per yard. The rails are fixed with-out chairs, and test upon the stone sleeper, fas-tened down with strong cast-iron pins let into…
Civil engineering · Architecture
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