The soil borrow material to be used to construct a highway embankment has a wet unit weight of 15.4 kN m3 ⁄ , a water content of 9%, and the specific gravity of the soil solids is 2.67. The specifications require that the soil be placed in the fill so that the dry unit weight is 17.9 kN m3 ⁄ and the water content be held to 20%. a. How many cubic meters of borrow are required to construct an embankment having a 612, 000-m3 net section volume? b. How many gallons of water must be added per cubic meter of borrow material assuming no loss by evaporation?
The soil borrow material to be used to construct a highway embankment has a wet unit weight of 15.4 kN m3 ⁄ , a water content of 9%, and the specific gravity of the soil solids is 2.67. The specifications require that the soil be placed in the fill so that the dry unit weight is 17.9 kN m3 ⁄ and the water content be held to 20%. a. How many cubic meters of borrow are required to construct an embankment having a 612, 000-m3 net section volume? b. How many gallons of water must be added per cubic meter of borrow material assuming no loss by evaporation?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The soil borrow material to be used to construct a highway embankment has a wet unit
weight of 15.4 kN m3 ⁄ , a water content of 9%, and the specific gravity of the soil solids
is 2.67. The specifications require that the soil be placed in the fill so that the dry unit
weight is 17.9 kN m3 ⁄ and the water content be held to 20%.
a. How many cubic meters of borrow are required to construct an embankment having
a 612, 000-m3 net section volume?
b. How many gallons of water must be added per cubic meter of borrow material
assuming no loss by evaporation?
c. If the compacted fill becomes saturated at constant volume, what will be the water
content and unit weight?
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