PRIN.OF GEOTECHNICAL...-MINDTAP(2 SEM)
9th Edition
ISBN: 9781305971271
Author: Das
Publisher: CENGAGE L
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Question
Chapter 3, Problem 3.23P
(a)
To determine
Calculate the moist unit weight of the borrow soil.
(b)
To determine
Calculate the degree of saturation of the borrow soil.
(c)
To determine
Calculate the moist unit weight of the compacted backfill.
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Problem 4:
After the construction of a concrete retaining wall, backfill material from a nearby borrow pit was brought into
the excavation behind the wall and compacted to a final void ratio of 0.8. Given that the soil in the borrow pit has
void ratio of 1.1, determine the volume of borrow material needed to fully compact backfill, knowing that the
total volume of the backfill is 30 m³.
Excavation
Ground level
Compacted
Soils from
borrow pit
(e = 1.1)
backfill
(e = 0.8)
Concrete
retaining
wall
After the construction of a
concrete retaining wall, back
fill material from a nearby
borrow pit was brought into
the excavation behind the wall
Excavation
Ground level
and compacted to a final void
ratio of 0.8. Given that the soil
Compacted
Soils from
borrow pit
(e = 1.1)
backfill
in the borrow pit has void ratio
of 1.1. Given that the borrow pit
soil has a moisture content of
(e = 0.8)
Concrete
retaining
wall
11% and Gs = 2.7, determine
a. Moist unit weight of the
borrow soil
b. Degree of saturation of
the borrow soil
c. Moist unit weight of the
compacted backfill
5. For the soil profile given below, assume that the primary consolidation settlement for the
clay layer is completed in 3 years. Estimate the secondary consolidation settlement for the
clay layer at the end of 10 years. Yw= 10kN/m³, Ca
= 0.03
1m
1.5m
2m
Groundwater table
0.5m
BXL = 2m x 4m
Sand
y = 17.0 kN/m³
90 = 100kPa
Sand
Ysat = 19.0 kN/m²
Normally consolidated Clay
Ysat =
20 kN/m³
eo = 0.7
Cs = 0.09
Cc = 0.2
-
Chapter 3 Solutions
PRIN.OF GEOTECHNICAL...-MINDTAP(2 SEM)
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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