| 摘要 |
<p>A method of testing the strength of a structure such as a crane comprising the steps of: providing a bag (10) comprising a flexible envelope (11) of predetermined size made from a liquid impervious material and having a closable liquid outlet (13) adjacent one end of the envelope and a liquid inlet (12) adjacent the opposite end of the envelope, suspending the bag from the structure to be tested, and filling the bag with liquid through the liquid inlet to a predetermined level thereby applying a predetermined weight to the structure.</p> |
