Transport packages shall possess sufficient compression strength so that they do not get deformed or crushed when stacked one above the other, either during transit or in storage. The compression strength of transport packages is determined by placing the package on a flat platform and pressing it down from top with the help of another flat plate.
The Compression Box Tester (For Transport Packages) for transport packages is fabricated out of rigid mild steel sections and plates. The lower platen on which the box is kept for pressing is fixed on the frame of the tester. The package under test is placed over this platen and pressed down from top with the help of another platen. The upper platen is moved down by means of a screw arrangement. This platen is pivoted so that is can tilt to align its lower face with the top of the package, if the top and bottom faces of the package are not parallel. For conducting edge loading tests the upper platen can be held rigidly so that it does not tilt.
ASTM D 642 â€“ 1994 : Standard Test Method for Determining Compressive Resistance of Shipping Containers, Components, and Unit Loads.