Since 1932 Texas and New Orleans Railroad has been replacing open deck and ballast deck timber trestles with structures incorporating creosote, open deck "packed chord" design; advantages and results obtained; timber stringers comprising chords are placed tightly against each other and fastened with through bolts, instead of being separated few inches as in conventional construction.
"Packed-chord" trestles give good service
Ry Eng Maintenance
Railway Engineering and Maintenance ; 46 , n 6
1950
2 pages
Aufsatz (Zeitschrift)
Englisch
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