## Design moments MEdz about z axis

M2 = 146.1 kNm from analysis eiNEd = effect of imperfections where

= 146.1 + (2965 / 400) x 1836 > 0.02 x 1836 = 146.1 + 13.6 > 36.7

= equivalent 1st order moment at about 2 axis at about mid height may

<5.8.8.2(3)> <5.8.8. 3> <Exp. (5.34)>

e0 = 20 mm be taken as M0e2 where

M2 = nominal 2nd order moment = NEde2

where m

where

= (2.08 - 0.83) / (2.08 - 0.40) = 1.25 / 1.68 = 0.74 = 1 + PPf

P = 0.35 + (fck / 200) - (A / 150) = 0.35 + 30 / 200 - 29.3 / 150 = 0.35 + 0.15 - 0.195 = 0.305

= effective creep coefficient

where Pp

0Eqp

: final creep coefficient : from Figure 3.1 for inside conditions h = 350 mm, C30/37, t0 = 15 : 2.4

: 1st order moment due to quasi permanent loads

fyd = 500 / 1.15 = 434.8 MPa Es = 200000 MPa d = effective depth

= 350 - 35 - 8 - 16 = 291 mm = 0.74 x 1.51 x 434.8 / (200000 x 0.45 x 291) = 0.0000186 = 2965 mm as before = (1 / r) 0 / 10 = 0.0000186 x 29652 / 10 = 16.3 mm

max[M0:

With reference to Exp. (5.13N), pef may be taken as equal to 2.0. However, for the purpose of illustration the full derivation is shown here.

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