. The Forest products laboratory : a decennial record, 1910-1920. h the smallest amount ofmaterial. New tyj)es of barrels, based upon the results of these tests,have been approved by the Interstate Commerce Commission. Justas in the design of barrels, so also with boxes, crates, and other typesof shipping containers, one of the most important design problems isto secure a balanced construction affording greatest strength atleast cost. The proper selection of the species or kind of wood forvarious uses is also very important. The laboratory has perfected a box testing drum giving consistentresu
. The Forest products laboratory : a decennial record, 1910-1920. h the smallest amount ofmaterial. New tyj)es of barrels, based upon the results of these tests,have been approved by the Interstate Commerce Commission. Justas in the design of barrels, so also with boxes, crates, and other typesof shipping containers, one of the most important design problems isto secure a balanced construction affording greatest strength atleast cost. The proper selection of the species or kind of wood forvarious uses is also very important. The laboratory has perfected a box testing drum giving consistentresults which indicate the value of any type of construction for theshipment of goods and has developed various standard types of boxconstructions which have been adopted by the associations of manu-facturers and of users of boxes. It has also investigated and testedthe relative value of many woods for box making and divided theminto four groups on this basis, the woods in each group to be used inter-changeably. This work represents the greatest single step forward. BOX TESTING IN THE BIG TUMBLING DRUM—A LABOKATOKY DEVICE FOBQUICKLY DETERMINING BOX OR CRATE WEAKNESSES 28 The Forest Products Laboratory in box design and proper selection of box species which has so far beentaken. Typical of various studies is the one made on hickory. A largenumber of tests on spokes and other vehicle parts showed definitelythat red hickory was not inferior to white hickory in its mechani-cal properties, and that grading rules discriminating against it onaccount of color were basically unsound. Tests on larger vehicle partssuch as axles, bolsters, and poles brought out the relative merits ofhickory and various substitute woods which the ever-increasing short-age of hickory has forced into use. The relative strength of various species of wood when used astelephone or other electric poles has been determined through actualstrength tests of a number of poles, simulating as nearly as possibleactual cond
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