UNIT 1
1 1. The
moist mass of 2.8 x 10-3 m3 of soil is 5.53 kg. If the
moisture content is 10% and specific gravity of soil solid is 2.73, determine
the following.
a. Moist
density
b. Dry
density
c. Void
ratio
d. Porosity
e. Degree
of Saturation
f. Volume
occupied by water
2 2. The
dry unit weight of soil is 1750kg/m3 . Given that Gs =2.66,
what is the moisture content of the soil when it is saturated?
3 3. For
saturated soil, the following are given: w=18% and Gs =2.71.
Determine
a. Saturated
Unit weight
b. Dry
Unit weight
c. Moist
unit weight when degree of saturation is 70%
4 4. For
sandy soil emax =0.75, emin =0.52, and Gs =2.7.
What is the void ratio at Dr = 56% ? Determine the moist unit weight
of soil when w=7% .
5 5. Earth
is required to be excavated from borrow pits for building an embankment. The wet
(moist) unit weight of undisturbed soil is 18 kN/m3 and its water
content is 8%. In order to build a 4 m high embankment with top width 2 m and
side slopes 1:1, estimate the quantity of earth required to be excavated per
meter length of embankment. The dry unit weight required in the embankment is
15 kN/m3 with a moisture content of 10%. Assume the specific gravity
of solids as 2.67. Also determine the void ratios and the degree of saturation
of the soil in both the undisturbed and remolded states.
6 6. The
laboratory tests on a sample of soil gave the following results: wn =
24%, wl = 62%, wp
= 28%, percentage of particles less than 2μ= 23%. Determine: (a) The
liquidity index, (b) activity (c) consistency and nature of soil.
7 7. The
mass of wet sample of soil in a drying dish is 462 g. The sample and the dish
have a mass of 364 g after drying in an oven at 110 °C overnight. The mass of
the dish alone is 39 g. Determine the water content of the soil.
8 8. A saturated soil has the following
characteristics: initial volume (Vi)=24.6cm3, final volume (Vf)=15.9cm3, mass
of wet soil (m1)=44 g, and mass of dry soil (m2)=30.1g.
Determine the shrinkage limit.
answers pls
ReplyDelete