TB-9-2320-279-34

TB-9-2320-279-34 - Page 7 of 29

Table 2-2. Load Ratings

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Test Classification Ill is a static Iii test used to assure structural integrity of HIAB Cranes at 110 percent

of their maximum rated bad.

Test Classification IV is a dynamic functions test performed to assure operability of crane and outriggers.

All cranes are tested at 100 percent of their maximum rated load. The HIAB 8108 Crane dynamic testing

is at 110 percent of the load rating.

2-2. TEST LOADS.

Test toads for HEMIT Cranes may take the form of weights that are locally fabricated, or any available

item of the proper weight. (The weight of any lifting slings, hooks or rigging should be considered in

selecting or instructing test weights). A calibrated load indicator or a calibrated dynamometer may be

used for static testing. All load testing devices should have a valid calibration label affixed in a visible

place. If a calibrated dynamometer is used, be sure it has a minimum capacity of twice the load test value

for proper accuracy.

2-3. FABRICATING TEST WEIGHTS.

Table 2-3 lists the test loads that are required for testing the various HEMIT Cranes. Although no unique

fabrication details are given, Table 2-4 gives weight details for bulk plate steel of varying thickness. If

weights are constructed by welding plates together, allowance should be made for additional weight

added by the welding process. All lifting slings hooks, and rigging should comply with the strength require-

ments given in MIL-STD-209F, paragraph 5.1.1.1. (Refer to Appendix B). Mark value clearly on each

weight.

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