[csi.fan1983]

I need a little help with some post lab write ups, hope someone can help.
In an experiment i calculated the relative density of sand
A - 1.092g
B - 2.038g
C - 0.057g
and D - 2.766g

I now have to compare my results with the density of building grade sand to see which of my samples would have been a suspect sand used for building a structure that had collapsed.

Im just stuck and dont know how I can compare my results with the density of building grade sand which is around 1800 - 2000 kg/m3.

I do feel that it is probably sand C but i have to back myself up and dont know how.

Any help would be appreciated

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