GGU-UNDERPIN: Analysis to EC 2/DIN 1045-1

N_R,d = design value of the acceptable longitudinal force;

b = width of section;

h = thickness of section;

f _m,d = design value of concrete compressive strength

= coefficient for considering the second order theory effects on the bearing capacity of compression members of unreinforced concrete in immovably braced structures;

e_tot = total eccentricity = e₀ + e_a + e

e₀ = load eccentricity according to first order theory, where necessary taking the actions from adjoining floors into consideration (e.g. bending moments as a result of fixity, transferred from a slab to the wall), as well as the horizontal actions of wind e_a, and the additional unintentional eccentricity as a result of geometric imperfections. If more precise data is not available, e_a may be assumed at = 0.5 l₀/200.

= eccentricity resulting from creep; generally, the e component can be disregarded.