A footing of size 2mx 2m transferring a pressure of 200 kN/m², is placed at a depth of 1.5 m below the ground as shown in the figure (not drawn to the scale). The clay stratum is normally consolidated. The clay has specific gravity of 2.65 and compression index of 0.3. 1.5 m 1m 1.5 m 200 kN/m² Silty sand Clay Ya = 15kN/m³ GWT = 18 kN/m³ Y sat Y sat = 17 kN/m³ 0.5 m Dense sand Considering 2:1 (vertical to horizontal) method of load distribution and Y = 10kN/m³, the primary consolida- tion settlement (in mm, round off to two decimal places) of the clay stratum is

A footing of size 2mx 2m transferring a pressure of 200 kN/m², is placed at a depth of 1.5 m below the ground as shown in the figure (not drawn to the scale). The clay stratum is normally consolidated. The clay has specific gravity of 2.65 and compression index of 0.3. 1.5 m 1m 1.5 m 200 kN/m² Silty sand Clay Ya = 15kN/m³ GWT = 18 kN/m³ Y sat Y sat = 17 kN/m³ 0.5 m Dense sand Considering 2:1 (vertical to horizontal) method of load distribution and Y = 10kN/m³, the primary consolida- tion settlement (in mm, round off to two decimal places) of the clay stratum is

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

A footing of size 2m×2m transferring a
pressure of 200 kN/m², is placed at a
depth of 1.5 m below the ground as
shown in the figure (not drawn to the
scale). The clay stratum is normally
consolidated. The clay has specific
gravity of 2.65 and compression index
of 0.3.
1.5m
1m
1.5 m
200 kN/m²
Silty sand
Clay
Ya =15kN/m³
Y sat = 18kN/m³
Y sat = 17 kN/m³
GWT
$0.5 m
Dense sand
Considering 2:1 (vertical to horizontal)
method of load distribution and
Y₁ = 10kN/m³, the primary consolida-
tion settlement (in mm, round off to two
decimal places) of the clay stratum is

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H← N M 1m QUESTION 2: Check if the base area of 2m x 2m is adequate for the footing under the loading shown in the figure. Allowable soil pressure is 0.25 MPa. N = 900 KN M = 150 kNm H=75kN
Q#4: Plate load test performed on a uniform deposit of sand and the following observations were recorded. The size of the plate was 45cm x 45cm. Plot the Pressure-Settlement Curve and determine the safe load on a footing 2m x 2m if the settlement is not to exceed 40mm. Pressure (kPa) 2 4 8 12 16 24 Settlement (mm) 3 6 20 40 60 100 Note: Write the proper answer in word format Subject: Geotechnical Design
For the embedded strip footing (infinitely long in the out-of-plane direction) shown below, the maximum vertical pressure that the soil can bear before failure is 100 kPa (i.e., qmax should not exceed 100 kPa). What is the maximum overall eccentricity of the foundation in mm before failure? (answer tolerance = 2%). Consider γconcrete = 25 kN/m3, γsoil = 18 kN/m3 and assume that the width of the embedded column is negligible, and the entire top of the foundation is covered with soil. Hint: for a strip footing, the calculations should be conducted assuming a 1-m long footing in the out-of-plane direction.
Please solve and provide answers
Please answer question 3b Question 3b
A 650-kN column load is supported on a 1.5 m wide by 2.0 m long by 0.5 m deep spread foot-ing. The soil below is a well-graded, normally consolidated sand with g = 18.0 kN/m3 and the following SPT N60 values:Depth (m) 1.0 2.0 3.0 4.0 5.0N60 12 13 13 8 22 The groundwater table is at a depth of 25 m. Compute settlement of the footing using the gen-eralized elastic method with Christian and Carrier’s (1978) influence factors.