# 3.24 Refer to the 15-ft high embankment shown in Figure 3.8. Embankments aregenerally constructed in several lifts or layers that are compacted accordingto geotechnical specifications. Each lift thickness is 3 ft and must have a dryunit weight of 118 lb/ft. It is known that the soil at the borrow pit has a moistunit weight of 111 lb/ft5, moisture content of 23%, and G, 2.67. Perform thefollowing tasksa. Determine the moist weight of borrow soil needed to construct the firstlift (bottom layer) per ft of the embankmentb. On the day of the construction, there was a heavy rain that caused theborrow pit to reach a near saturated condition. Recalculate the moistweight of the borrow soil needed to construct the first lift 25 ftiV: 2H1V : 2H15 ftFigure 3.8

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Step 1

Given information:

Step 2

Calculation of bottom width of embankment

Using similar triangle equation

Step 3

Calculation of top width at 3 f...

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