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Draft October 2001 gives a fairly correct influence for ro, but it severely overestimates the slenderness limit for a high normal force combined with a high creep effect, see table 5.4 (here the values are based on ^ef = 2). The omission of the effects of both normal force and creep are the main disadvantages of this model.

5.8.3.1.5 Comparisons with new model

In tables 5.5 and 5.6 the new model (see p. 4) is compared to the same data as in tables 5.1and 5.2 respectively.

Table 5.5. Slenderness limit according to new model compared with table 3-1 (ro = 0,3).

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