Question

2. [10] A segment of interstate highway requires the construction of an embankment of 500,000 yds. The embankment fills to be compacted to a minimum of 90% of Modified Proctor maximum dry density. A source of suitable borrow has been located for construction of the embankment. Tests showed that the required dry density can be achieved with the existing moisture content of the borrow pit material. The following data is provided: Dry unit weight of soil in the borrow pit Moisture content in borrow pit Specific gravity of the soil particles Modified Proctor optimum moisture content Modified Proctor maximum dry density - 113 pef =16% - 2.65 13 % - 120 pef Assuming each truck holds 5 yd' and there is no loss of material during transport, find the minimum number of truckloads of soil required to construct the embankment. Draw a phase diagram

Answer 1

2 souhon 500 000 ntmento d onembontmen en ,-113 pe W] modihed pex o 150 ily dens tur oiru iodihed tte

uolume *Borrow pit U50,oo y Ctor momumwr 100 ご 0.9x120 No S UU 2.65% 6 드 드 seo000 C14 ou63) (40,13 , voume -

Assumi onopod 5 4커aq2-2926 mininum . Mutt toad ะ qss ss. 45852 Nov.