Simplification of grading rules and classification of timber for railway uses; revise present specifications for treated and untreated timber piling; specifications for timber piles; supply yards for standard trestle timbers throughout country. Abstract of report to Am. Ry. Eng. Assn.
Report on wooden bridges and trestles
Ry. Age
Railway Age ; 84 , n 9B
1928
Article (Journal)
English
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