QUESTION $4$: After completing the work up to the slab$-$on$-$fill, what is the estimated volume $($m$3)$ of soil to be disposed? Considering a swell factor of $25\%$ on the excavated soil.

Note:

$$ Assuming all backfill material came from

QUESTION $5$: In connection to Question $4,$ given that each elf truck has a capacity of $3$ m$3,$ how many trucks are required to transport the soil. the excavated soil