Designation of Quality Levels on Drawings

(1)P In order that inspection can be particularly concentrated on those parts of the structure which are critical for fatigue the following actions shall be taken:

a) Determine by calculation those regions of the structure where the fatigue strength requirement exceeds detail Category 20.

b) Indicate on the detailed drawings at all details in these regions the required quality level from table 6.11 and the direction of stress fluctuation as shown in figure 6.2.1.

c) Any drawing which contains a detail with a required fatigue strength greater than 20 shall have the following general note added as follows:

'Details requiring quality levels above Normal are indicated with Tat' number and an arrow (see ENV 1999-2 Annex D)\

Fat X 25

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