Question $6(8$ Marks$)$

If a steel beam is to be realised by welding two plates together to form a T$-$section as shown in Figure $6,$ which of the following values best approximates the value of the elastic section modulus, Z $,$ that should be used to check the flexural strength of the section $($in major axis bending$)?$

Figure $6$: T$-$shaped steel beam section considered in Question $6.$