The specific gravity of coarse aggregate, SGca$=2\mathrm{.}69.$ The specific gravity of fine aggregate, SGa$=2\mathrm{.}65.$ The specific gravity of cement, Sce$=3\mathrm{.}15.$ Bulk density of dry$-$rodded of coarse aggregate, Bca$=105$ pf$.$ Water density, Dwa$=62\mathrm{.}4$ pcf$\mathrm{.}6.$ Determine the amount of coarse aggregate in Ibs that is needed for mixing $1$ cubic yard concrete $($show calculation procedures$)(10$ points$)$