Full working please....Your engineering firm has also asked you to verify the structural steel that will be used for the stadium roof. This

must meet the requirements given in the NZS $3679\mathrm{.}1$:$2016$ Standard for Grade $300$S$0.$ Note that the thickness of the steel

elements is $20mm.$

Mechanical tests

You performed $5$ tensile tests and $3$ Charpy V$-$notch impact tests $($size of the test piece is $10mm10mm)$ and you obtained the

following results:

Check each of the following requirement in the NZS $3679\mathrm{.}1$:$2016$ standard to see if the material is Grade $300$ S$0$ or not:

a$.$ Yield stress

b$.$ Tensile strength

c$.$ Elongation

d$.$ Absorbed energy

Select one:

a$.$ Yes, all the properties meet the standard requirements.

b$.$ No$,$ yield stress is below standards limits

c$.$ No$,$ tensile strength is below standards limits

d$.$ No$,$ minimum elongation is below standards limits

e$.$ No$,$absorbed energy is below standards limits