Create $3$ different wall sections that would have an R$-$Value of $20$ or higher. One wall should be wood framed $($assume $20\%$ framing and $80\%$ cavity$)$

One wall should be concrete block structure $($how you finish it inside$/$outside is up to you$)$

One wall should be steel studs $($steel studs drastically reduce the effectiveness of cavity insulation, this makes it ineffective to have batt insulation$).$

For this wall you will not count the framing for any contribution to R$-$Value and you must not use cavity insulation.

Create a sketch of each wall section in plan view.

Show the composite R$-$Value of each of the walls $($and show your work$).$