Show BUILDING jah faw A FLUME a mm forest service in bulletin tells of different types kind la Is more efficient than the box or square sided form la Is one of conclusions reached by department of agriculture washington that the V shaped timber flume Is a more efficient type than tho the box or square sided form la Is one of the conclusions reached by the department of agriculture in a bulletin issued on flumes blumes and flu bluming ming the V shaped wooden flume requires less water and on the average less repairs than the other type Is bettor better adapted to act as a slide on oil steep grades and offers fewer chances tor for jams concerning a third type the sectional metal lume flume semicircular semi circular in form the prediction Is made th that at it will como come into wide use such a flume Is strong and light and can be quickly taken apart and transported from one place to another to bo be set up tip again when building flumes blumes a goo goob i plan says the department Is to erect a sm small all sawmill at or near the upper end of the lume flume location to saw out the umber lumber needed for construction such material can bo be floated down the MIMI as fast as the latter Is built and used for further birther extension for handling railroad crosa ties cants poles cordwood and the lilio a numo flume with the sides of the V 30 10 inches in height Is large enough for handling logs piling long timber or trailed sawed cawed lumber a height of from forty to sixty inches Is recommended tho the best angle for the V Is put at 90 degrees proposed flume lines ought to be surveyed as carefully as a line tor for a logging railroad to insure evenness of grade grades should be below fifteen per cent wherever possible and the best results are obtained with grades between two and ten per cent abrupt curvatures in a flume should be avoided for they are likely to cause jams curves should rarely be permitted to exceed 20 degrees it may be necessary to blast out rocks and bo boulders bowl ders or projecting points of bluffs or to trestle or even tunnel to eliminate abrupt curves or maintain an even grade telephones are recommended as adjuncts to the operation of a flume dy by their use a serious break or jam can be reported immediately to tile tho head of the flume to prevent further shipment of material A telephone also makes it possible to notify the tren at the upper end of the flume just what material to ship and when to ship it A flume recently built on creek near st joe idaho Is cited as a good example of modern V shaped flume construction this flume which Is unus unusually unify large and built to handle heavy logs and long timbers la is said to nava have cost approximately per mile for the five miles of its length including the cost of constructing a wagon road and telephone tele equipment other flumes blumes iro are cited costing front from 2000 to 75 a mile alle |