Sure, here are three calculation$-$based questions in civil engineering:$1.**$Concrete Mix Design:$**$ Calculate the amount of cement $($in kg$)$ needed to prepare $1$ cubic meter of concrete with a mix ratio of $1$:$2$:$4($cement: sand: aggregates$).$ Assume: $-$ Density of cement $=1440$ kg$/$m$^3-$ Mix ratio by volume. $**$Options:$**-$ A$)360$ kg $-$ B$)400$ kg $-$ C$)450$ kg $-$ D$)480$ kg$2.**$Beam Bending Moment:$**$ A simply supported beam has a span of $8$ meters and carries a uniformly distributed load of $2$ kN$/$m$.$ Calculate the maximum bending moment $($in kNm$).**$Options:$**-$ A$)16$ kNm $-$ B$)32$ kNm $-$ C$)64$ kNm $-$ D$)128$ kNm$3.**$Soil Compaction:$**$ A site requires $500$ m$^3$ of compacted soil with a compaction factor of $1\mathrm{.}2.$ Calculate the volume of loose soil needed before compaction. $**$Options:$**-$ A$)400$ m$^3-$ B$)500$ m$^3-$ C$)600$ m$^3-$ D$)720$ m$^3$These questions address core areas such as materials, structural analysis, and geotechnical engineering.