How is the lever arm calculated in PSC design for Eurocode?

Question:

Answer:

The lever arm is calculated from the ultimate bending analysis:

As per the Euro 1992 -1-1 6.2.3 the parameter z is the lever arm in the bending moment calculation, but if we don't have accurate calculations it is suggested to take 0.9*d .

In midas civil, we calculate the lever arm exactly as per the moment capacity and the compressive force in the section as shown below:

C = Total compressive force in the section for calculating moment capacity

M = MRx = Flexural moment capacity of the section

z = Inner Lever Arm = M/C

eurocode lever arm psc design

Creation date: 5/15/2020 12:00 PM Updated: 5/19/2023 7:46 PM

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