7.4 Deflection control

C7.4 Discussion of the general method followed for deflection calculation

7.4.1 General considerations

7.4.2 Cases where calculations may be omitted

7.4.3 Checking deflections by calculation

7.4.1 Instantaneous deflections

Instantaneous deflections are computed by applying the total load on a structure in which there is a reduction of the stiffness. The law to calculate the reduction of stiffness is deduced from equation 7.8 of prEN 1992-1:

r El

From this equation, the following relationship is obtained:

0 0

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