## Check for biaxial bending

As a worst case MEDy may coexist with e0NEd about the orthogonal axis: (MEdz / NEd) / h 38.5

S2.4

A biaxial check required

Check whether

where

To determine MRdz, find MEd / bh2fck (and therefore moment capacity) by interpolating between d2 / h = 0.15 (Concise EC2 Figure 15.5c) and 0.20 (Concise EC2 Figure 15.5d) for the proposed arrangement and coexistant axial load

Assuming 4 no. H25,

Asfyk / bhfck = 1964 x 500 / (3002x 30) = 0.36 Interpolating for NEd / bhfck = 0.6,

A Mr

MEd I bh2fck = 0.094 = MRdy = 0.094 x SOO2 x SO = 76.1 kNm

A is dependent on NEd / NRd where

= 3002 x 0.85 x 30 / 1.5 + 1964 x 500 / 1.15 = 1530.0 + 853.9 = 2383.9 kN

<Concise EC2 Figs 15.5c, 15.5d>

a = 1.48 by interpolating between values given for NEd / NRd= 0.1 ,(1.0) and NEd / NRd = 0.7, (1.5)

: (S8.5 I 76.1)148 + (S2.4 I 76.1)1' : 036 + 0.28 : 0.64 A OK.

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