EBK PRINCIPLES OF GEOTECHNICAL ENGINEER
9th Edition
ISBN: 8220103611718
Author: SOBHAN
Publisher: CENGAGE L
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Chapter 3, Problem 3.24P
(a)
To determine
Calculate the moist weight of borrow soil needed to construct the first lift per ft of the embankment.
(b)
To determine
Calculate the moist weight of borrow soil needed to construct the first lift after heavy rain.
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Refer to Figure 2. Embankments are generally constructed in several layers that are compacted according to geotechnical specifications.layers that are compacted according to geotechnical specifications. The thickness of eachof each layer is 3ft and should have a dry unit weight of 118 lb/ft3 .. It is known that theThe soil used in the embankment has a wet unit weight of 111 lb/ft3, moisture contentmoisture content of 23%, and Gs = 2.67. Complete the following tasks:(a) Determine the wet weight of the soil required to construct the first layer.(closest to the foundation soil) per foot (ft) of the embankment.b) On the day of construction there was a heavy rain that caused the soil used to reach a nearly saturated condition.used to reach a near saturated condition. Recalculate the wet weightwet weight of soil required to construct the first layer.
An embankment will be constructed from borrowed
Soil. The cross section of the embankment is shown
in Exhibit 10.10. The soil in the embankment has to
be compacted to a dry unit weight of 108 lb/ft³ at
a moisture content of 14.5%. The borrowed soil will
be brought in 10 cubic-yard truck loads. The borrowed
Soil has a void ratio of 1.1. Given: specific gravity
Of Soil Solids, Gs=2.68. The volume of excavation
needed at the borrow site for construction of each
100' length of embankment is most nearly:
1
a) 4144 yd ³
b) 5260 yd3
c) 3550 yd3
d) 4890 yd³
25ft
15ft
Exhibit 10.10
The embankment for a highway 5097 ft long, 104 ft wide and 6 ft in compacted thickness is to be constructed from a sandy soil trucked from a borrow pit. The water content of the sandy soil in the borrow pit is 6.748% and its porosity is 0.422. The specification requires the embankment be compacted to a dry unit weight of 122.874 lb/ft3. The specific gravity is 2.588. Determine the following:
a. Total weight of the soil solids, kips.
b. Total volume of the soil required from the borrow pit, ft3.
c. Weight of water to be added per foot length of the embankment to reach 10% moisture content, lb.
Chapter 3 Solutions
EBK PRINCIPLES OF GEOTECHNICAL ENGINEER
Ch. 3 - Prob. 3.1PCh. 3 - Prob. 3.2PCh. 3 - Prob. 3.3PCh. 3 - Prob. 3.4PCh. 3 - Prob. 3.5PCh. 3 - Prob. 3.6PCh. 3 - Prob. 3.7PCh. 3 - Prob. 3.8PCh. 3 - Prob. 3.9PCh. 3 - Prob. 3.10P
Ch. 3 - Prob. 3.11PCh. 3 - Prob. 3.12PCh. 3 - Prob. 3.13PCh. 3 - Prob. 3.14PCh. 3 - Prob. 3.15PCh. 3 - Prob. 3.16PCh. 3 - Prob. 3.17PCh. 3 - Prob. 3.18PCh. 3 - Prob. 3.19PCh. 3 - Prob. 3.20PCh. 3 - Prob. 3.21PCh. 3 - Prob. 3.22PCh. 3 - Prob. 3.23PCh. 3 - Prob. 3.24PCh. 3 - For a given sandy soil, emax = 0.75 and emin =...Ch. 3 - For a given sandy soil, the maximum and minimum...Ch. 3 - Prob. 3.27PCh. 3 - Prob. 3.28PCh. 3 - Prob. 3.29PCh. 3 - Prob. 3.1CTPCh. 3 - Prob. 3.2CTPCh. 3 - Prob. 3.3CTP
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