MIL-STD-1660A APPENDIX G
b. If necessary, equipment to move the specimen. G.3 SPECIMENS
G.3.1 Contents. One unit load and its contents shall constitute a single specimen. The unit load shall be loaded for the test with the interior packing and the actual contents for which it was designed. If use of the actual contents
is not practical, a dummy load shall be substituted to simulate such contents in weight distribution, shape, rigidity, and position in the unit load. The contents, or dummy load, shall be blocked, braced, and cushioned in place as for
shipment.
G.4 CONDITIONING
G.4.1 Test specimen. Unless otherwise specified (see 6.2), no special conditioning of the test specimen shall be necessary.
G.5 PROCEDURE
G.5.1 Sequence of tests. Unless otherwise specified (see 6.2), handling provisions shall be tested as follows in the sequence given.
G.5.2 Lifting and transporting by forklift truck. The specimen shall be lifted clear of the ground by a forklift truck at one side of the specimen and transported on the forks in the level or the back-tilt position across a hard pavement for a distance not less than 100 feet. Parallel pairs of 1-inch boards spaced 54 inches apart shall be laid flatwise on the pavement across the path of the forklift truck. The first pair shall be placed squarely across the truck's path and centered 30 feet from the starting point; the second pair shall be laid 60 feet from the starting point at an angle of about 60 degrees to the truck's path so the left wheel strikes first; and the third pair shall be laid 90 feet from the starting point at about 75 degrees to the truck's path so the right wheel strikes first. If the specimen is less than 40 inches high and weighs less than 500 pounds, a load shall be superimposed on the specimen throughout the test to simulate stacking of the minimum number of specimens that will attain either a height not less than 80 inches or a weight not less than 1,000 pounds. For example, if a specimen were 30 inches high and weighed 200 pounds, superimposed load would be required. A stack of three would measure 90 inches high, which is not less than 80, so the weight of two (400 pounds) would be superimposed on the test specimen. Similarly, if a test
specimen were 15 inches high and weighed 300 pounds, a stack of four would weigh 1,200 pounds, which is not less than 1,000, so the weight of three (900 pounds) would be superimposed on the test specimen. If the test specimen is more than 36 inches wide and is stable on 36-inch-long forks, the forks shall extend only 36 inches under the specimen. The forklift truck carrying the specimen and superimposed load, if required, shall travel the 100 feet in about 23 seconds at a uniform speed (normal walking speed), and then shall be brought to a stop. The specimen
shall be carefully observed during the traverse and while the forklift truck is at a stop for any damage, evidence of inadequacy, or deflection of the specimen that might cause damage or displacement of the contents. A record shall be made of the observations. The specimen with its superimposed load, if any, shall then be lowered to the ground. The forklift truck shall be moved from the side to the end of the specimen. The forks shall be run under the specimen as far as possible and then operated to lift the end 6 inches. Observe the specimen, particularly in the vicinity of the ends of the forks, and record observations. If the specimen can thus be lifted clear of the floor,
transport it on the forks over the same 100-foot course, and record observations. If it cannot be thus lifted, report the
length of forks used and state that the specimen could not be carried on the forklift truck at either end.
G.5.3 Hoisting with slings. If the specimen is less than 40 inches high and weighs less than 500 pounds, a load shall be superimposed on the specimen throughout the test to simulate stacking to not less than either a height of 80 inches or a weight of 1,000 pounds (see G.5.2 for examples). Such superimposed load shall not contact the slings or lend reinforcement to the top structure of the unit load.
G.5.3.1 Undersling handling. (see figure G-1) Two slings without spreaders shall be placed around the specimen, each passing beneath the specimen, one near each end where indicated on the unit load and bought to a common point above the center of balance for attachment to the hoist. When no indication is provided, locate slings at outside end of rubbing strips if possible. If not possible, locate slings about midway between the center of
balance and the ends. Lift the specimen and any superimposed load, and hold suspended for not less than 2 minutes. Observe carefully for any indications of inadequacies and let the specimen down again. Record observations.
Source: https://assist.dla.mil -- 3D5ownloaded: 2014-09-28T13:04Z Check the source to verify that this is the current version before use.
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