A soil profile consisting of 3 layers is shown in Fig. 3. Answer the following V....
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
2.) THE SOIL PROFILE SHOWS CONSISTS OF A LAYER OF DRY SAND 4m HICK WHICH OVERLIES A LAYER OF CLAY HAVING A THICKNESS OF 6m. GROUND WATER TABLE IS LOCATED AT THE INTERFACE OF THE SAND AND CLAY a.) COMPUTE THE EFFECTIVE STRESS AT THE BOTTOM OF THE CLAY LAYER b..) IF THE WATER TABLE RISES BY 2m, DETERMINE THE EFFECTIVE STRESS AT THE BOTTOM OF THE CLAY LAYER c.) IF THE WATER TABLE LOWERS BY 2m, DETERMINE THE EFFECTIVE...
1. (25 points) The soil profile at a site consists of a layer of fine sand 5 m thick above a layer of clay 4 m thick. Below the clay is a layer of impermeable rock. The groundwater table was observed at 2 m below ground level. The unit weight of the sand above and below the water table is 20 KN/m'. The water content of the clay is 25% and its dry unit weight is 15 KN/m'. The compression...
In the figure below, the natural soil profile consists of sand
overlying clay overlying sand overlying bedrock. A
water table is present 1 m beneath the surface of the natural
ground. If 4 m of consistent fill material (γfill = 15
kN/m3) was placed on top of this soil profile that covered a
large area, determine:
(a) The consolidation settlement of the clay layer (using 4
equal layers in your calculation), and
(b) The time (in days) for this consolidation...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick above a layer of soft, normally consolidated clay 2 m thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The void ratio of the sand is 0.76, and the water content of the clay is 43%. The building will impose a vertical stress increase...
soil
Q4) From the figure and soil profile as below find the following: 1) the final consolidation for clay layer under the center of bridge pier as shown below. use the approximate method to calculate the increasing stress in soil. 2) the coefficient of volume compressibility (mv) of clay layer. mass=2x106 kg footing=10m x 8m y=16.62kN/m3 3m 2m 7m 10m Sand and graver Ysat.=19.8kN/m Clay Cc=0.33,w=30%, Gs=2.7, Ysat.=19.8kN/m3 sand and gravel 4m
e3 shows the soil profile (sand-clay-sand) at the site of a warehouse that causes a surface ding of 100 kPa. (pw= 1000 kg/m; g 9.81 m/s2) on 4 (25 marks) A clay sample was cored at 7 m depth (middle of the clay layer). Based on laboratory test data, it was found that the clay was over-consolidated with OCR = 2.5 (before applying surface loading), compression index Ce 0.44 and recompression index C. = 0.1. The consolidation coefficient of clay...
A soil profile is shown below. The soil sample is taken from depth of 11m, a) Is it OC or NC soil? b) If it is loaded with A6= 28 t/m2 calculate the settlement of clay layer. For sand Ydry = 1.75 t/m and Ysat = 2.0 t/m3 For clay Xsat = 1.9 t/m3 6'o+A6 SC 6'o+A6 CsH Сен -log 1+ Sc log 087645) 610 1+eo 610 Sc CH 1+0 -log 6) + CCH 1+ -log (9729) 610 Sand 5m...
geotechnical engineering
The soil profile at a site consists of a clay layer 10 m thick, sandwich between two sand layers. The top sand layer has a density of 1.9 Mg/m² and is 5 m thick. Below this layer is a 10 m thick clay layer with a saturated density of 1.8 Mg/m' and a saturated water content 42%. The deeper sand layer has a saturated density of 1.9 Mg/m² and extend to the depth investigated at the site. The...
Base on the soil profile above (Fig.3), it was
designed to use driven pile with dimension 500mm x 500mm to carry
out the following design load (use factor of safety = 2):
i. 200 kN
ii. 1000 kN
iii. 3000 kN
Determine the required depth of driven pile (assume no defective of
pile during installation process)
Sand Layer 1 r = 16.5 kN/m Ysat = 18.5 kN/m c' = 0 kPa O' = 30° 20 m Sand Layer 2 y...