Based on average values for swell and the angle of repose for dry

sand, estimate the size of a conical spoil bank containing $500BCY$ of

this sand.

Table $2-5.$ Typical soil weight and volume change characteristics$*$

$-$Exact values vary with grain size distribution, moisture, compaction, and other factors. Tests are required to determine exact values for a specific soil.

$*$Compacted rock is less dense than is in$-$place rock.

Table $2-6.$ Typical values of angle of repose

of excavated soil