Task $3$:

$$ a$)$ In following equation, what is symbolized by $$N$*?$

$$ b$)$ Write down the equation used to find the Elastic flexural buckling load $($Nomb$)$ for braced compressive member.

$$ c$)$ Moment Amplification Factor on a Braced Frame An edge column in a building of $$simple$$ construction is of $150$UB$14$ section $(,$ effective length $6$m$.$ It has an axial compressive force N$*=100$ kN and a uniform bending moment Mm$*=50$ kNm calculated by first order analys is$.$ Calculate b and hence the amplified moment that should be used for design.

$$ d$)$ If the Member design axial force $($N$*)$ is $5000$ and Euler elastic buckling load $($Noms$)$ is $60000$ in given member, find out the elastic buckling load factor $().$ Length of the member is $4$m$.$