. Lumbering in the sugar and yellow pine region of California . F-I5857-A Fig. 2.—Frame Trestle on Logging Railroad in the Sugar Pine Region. Bui. 440, U. S. Dept. of Agriculture. Plate XI. #* <*£ -*: . 1 w&ki ?V -^M& ~ ^|«k:-^ *u* .;--^ ^|N F-30927 Fig. 1.—Loaded Logging Cars Ready for Transportation to the Mill F-I5J52-A Fig. 2.—Special Unloading Rig at the Mill of loaded flat cars set in ready for unloading. LUMBERING IN PINE REGION OF 7.—Cost of standard-gauge frame trestles. 53 Length. Maximumheight. Feet, board measure. Totalcost. Costper 1,000. Cost
. Lumbering in the sugar and yellow pine region of California . F-I5857-A Fig. 2.—Frame Trestle on Logging Railroad in the Sugar Pine Region. Bui. 440, U. S. Dept. of Agriculture. Plate XI. #* <*£ -*: . 1 w&ki ?V -^M& ~ ^|«k:-^ *u* .;--^ ^|N F-30927 Fig. 1.—Loaded Logging Cars Ready for Transportation to the Mill F-I5J52-A Fig. 2.—Special Unloading Rig at the Mill of loaded flat cars set in ready for unloading. LUMBERING IN PINE REGION OF 7.—Cost of standard-gauge frame trestles. 53 Length. Maximumheight. Feet, board measure. Totalcost. Costper 1,000. Cost per linear foot. Feet. Feet. 620 52 $2,800 $ $ 652 28 60,000 1,565 762 8 68,000 1,704 202 32 28,000 743 140 34 19,000 487 238 31 31,000 724 272 41 45,000 1,030 144 54 30,000 713 It thus appears that the cost of constructing sawed-timber trestlesin this region varies from $23 to $27 per 1,000 feet board measure;depending upon the difficulties of construction, particularly theamount of work necessary in excavating foundations. A good av-erage figure for trestle construction is $25 per 1,000. The cost perlinear foot may be roughly calculated as from $ to $ fortrestles with a maximum height of from 10 to 25 feet,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlumbering, bookyear19
