RCDC - Slenderness Moment - effective depth

Dear,

In column design as per EN 1992, in calculation of slenderness moment formula used for:

deff,slend= (D'/2)+Is.

This formula should be used in a case that reinforcement arrangement is parallel to the plane of bending (ch. 5.8.8.3(2)).

In a situation that RFT is arranged all around, this formula gives underestimated value of effective depth d'.

i.g. 134mm instead of 245mm (column 300x300, cover 35mm, links 10mm, RFT 20mm).

This will result in higher second order moment (eccentricity e2 is higher).

Can we influence this formula for d?

Parents Reply Children