NOTE The conditions for curing and storage (see 6.1) can be varied to suit different requirements, e.g. early pre-stress. The time of loading (see 6.2) can also be varied to give an indication of other properties. These variations, however, will not conform to the requirements for a creep test as specified in this part of ISO 1920 and it is necessary that any deviation from the standard procedure be recorded in the test report.