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US / Forest products laboratory, 1964. — 134 c.
The packaging industry consumes 15 to 20 percent of each years timber cut, in the form of lumber, plywood, veneer, container fiberboard, composite materials such as paper overlaid veneer, and papers of various types. Because of this continued heavy use of wood, the Forest Products Laboratory, U.S. Forest Service, has always devoted much research to packaging. Much of this research has been conducted over the years in cooperation with the Air Force, the Army Corps of Engineers and Ordnance Corps, other agencies of the Defense Department, and several industrial firms. Of principal concern are the fundamental principles of design and the relationships of various details in the construction of containers that are balanced in strength. Special testing machines and methods of testing have been developed. From this research, supplemented by study and observation of shipping containers in service, has come much information of value to packaging engineers. The growth of American industry has generated great needs for containers of all kinds, from colorful wraps for retail merchandise to workhorse containers for the worldwide shipment of machines and equipment of any size, shape, and weight. Among these containers, the wood crate is one of the most important used for shipping and is perhaps the most adaptable to the application of engineering principles in design. Crates are generally made of wood (or a wood-base material) because it is strong and rigid, comparatively light in weight, inexpensive, easily formed into a multitude of sizes and designs, and adaptable to a variety of conditions of use.
E-Book Content
WOOD CRATE design manual AGRICULTURAL HANDBOOK NO. 252 • U.S. DEPARTMENT OF AGRICULTURE • FOREST SERVICE
WOOD CRATE Design Manual
By L. O. ANDERSON, Engineer, and T. B. HEEBINK, Engineer
FOREST PRODUCTS LABORATORY (Maintained at Madison, Wis., in cooperation with the University of Wisconsin)
AGRICULTURE HANDBOOK NO. 252 FOREST SERVICE
FEBRUARY 1964 U.S. DEPARTMENT OF AGRICULTURE
For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C., 20402 - Price 70 cents
CONTENTS
Introduction- - - - - - - - - - - - - - - - - - - - - - - - - - Factors that affect crate design - - - - - - - - - Contents - - - - - - - - - - - - - - - - - - - - - - - - - - - Destination and method of transit- - - - - Handling hazards - - - - - - - - - - - - - - - - - - - Storage conditions - - - - - - - - - - - - - - - - - - - - Costs - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Materials for crates- - - - - - - - - - - - - - - - - - - - Wood and wood-base materials - - - - - - - - Fastenings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Designing crates - - - - - - - - - - - - - - - - - - - - - - Importance of diagonals - - - - - - - - - - - - - Design principles - - - - - - - - - - - - - - - - - - - - Designing the crate base - - - - - - - - - - - - - Designing the top - - - - - - - - - - - - - - - - - - - Sheathed crates - - - - - - - - - - - - - - - - - - - - - - - Military type sheathed crates-----------Limited-military sheathed crates - - - - - - Light-duty sheathed crates - - - - - - - - - - - Open crates - - - - - - - - - - - - - - - - - - - - - - - - - - Military type open crates - - - - - - - - - - - - Limited-military type open crates - - - - - -
Page
1 2 2 2 2 4 4 5 5 13 23 24 24 29 31 32 32 45 46 50 50 53
Light-duty open crates - - - - - - - - - - - - - - - Skid assemblies - - - - - - - - - - - - - - - - - - - - - - - Skid sizes - - - - - - - - - - - - - - - - - - - - - - - - - - Floorboard sizes - - - - - - - - - - - - - - - - - - - - - Diagonal bracing- - - - - - - - - - - - - - - - - - - - Assembly - - - - - - -