. Electric railway journal . mp; Q. CLASSIFICATION OF TIE TIMBER ONBASIS OF HARDWOOD AND SOFT WOOD ANDFOR USE TREATED AND UNTREATED HARDWOODS UNTREATED: I white oak, 2 bin oak, 3 chestnut, 4 locust, 5 black walnut, 6mulberry, 7 sassafras. TREATED: 1 red oak, 2 black oak, 5 pin oak, 4 water oak, 5 turkey oak, 6 Span-ish oak, 7 black-jack, 8 beech, 9 hickory, 10 ash, I I elm, 12 hard maple, 13cherry. SOFTWOODS UNTREATED: ITREATED: I sin5 tamarack, 6 1berry, 12 but!< r, I cypress. f pine, 2 loblolly pine, 3sk, 7tupelo, 8 birch, 9syc their relative mechanical properties, and the UnitedStat
. Electric railway journal . mp; Q. CLASSIFICATION OF TIE TIMBER ONBASIS OF HARDWOOD AND SOFT WOOD ANDFOR USE TREATED AND UNTREATED HARDWOODS UNTREATED: I white oak, 2 bin oak, 3 chestnut, 4 locust, 5 black walnut, 6mulberry, 7 sassafras. TREATED: 1 red oak, 2 black oak, 5 pin oak, 4 water oak, 5 turkey oak, 6 Span-ish oak, 7 black-jack, 8 beech, 9 hickory, 10 ash, I I elm, 12 hard maple, 13cherry. SOFTWOODS UNTREATED: ITREATED: I sin5 tamarack, 6 1berry, 12 but!< r, I cypress. f pine, 2 loblolly pine, 3sk, 7tupelo, 8 birch, 9syc their relative mechanical properties, and the UnitedStates Forest Products Laboratory has suggested sucha classification based upon a composite figure involv-ing the following mechanical properties: Static bend-ing, impact bending, compression parallel to grain, com-pression perpendicular to grain, and hardness. Such atentative classification is given in Table III. Mean-while the C. B. & Q. has adopted a classificationbased on its experience with treated timbers and some.
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