Q3. The total load of a chimney and its circular footing is 35 MN, as shown...

Q3. The total load of a chimney and its circular footing is 35 MN, as shown in the figure. Assume the average unit weight of soil below and above the water table is the same.

Presume: B (diameter) = 8 m, H = 6 m, and D = 2 m.

According to SPT results, the average N-value for sandy soil below the footing is 20.

Estimate the values of the friction angle and the average unit weight of soil based on N-value.
Determine the factor of safety of this footing against the bearing capacity failure using Hansen’s equations.

Expert Solution

If you have any doubts please ask me.....please upvote to me....Tq

Ally Wells answered 9 months ago

a circular footing 10m in diameter is proposed to carry a total load of 9000 KN....

a circular footing 10m in diameter is proposed to carry a total load of 9000 KN. The footing is to be placed at a depth of 2m below ground surface. The soil is normally consolidated silty clay with a unit weight of 20KN/m^3 and undrained shear strength of 50 KPa. 1) determine the short-term factor of safety using the General bearing capacity equation. 2) Calculate the expected consolidation settlement of the footing if the compression index is 0.2 and the...

1)The stress on the circular footing of 6 m diameter due to column load is 200...

1)The stress on the circular footing of 6 m diameter due to column load is 200 kPa at the level of the footing i.e., z = 0 m. Calculate the vertical stress at a depth of 2 m, 4 m and 6 m below the central line of the footing and at edge of the footing. Also, draw the pressure bulb for 10% intensity of the applied in conventional graph sheet . 2)There are two borrowing areas ‘A’ and ‘B’...

A 5-kN horizontal load acts on the column shown in Figure Q3 at a location of...

A 5-kN horizontal load acts on the column shown in Figure Q3 at a location of 1.7 m above the ground level. 50 kN Elev. 0.0 GWT-Elev.-1.1 m Elev.-2.0 m_ Figure Q3 (1) Determine a suitable footing size, using the following information: The site soil is granular soil with an angle of friction 20°, a unit weight of 16.5kN/m (above the groundwater table) and a saturated unit weight of 19.8 16.5kN/m3: Factor of safety FS-2.5; (2) If the horizontal load...

A steel cantilever member as shown below is subjected to a transverse load at its end...

A steel cantilever member as shown below is subjected to a transverse load at its end that varies from 135 N to -45 N as axial load varies from 450 N to -110 N. Determine the required diameter at the change of section for infinite life using a factor of safety of 2. The strength properties of the material are: Sut=550 MPa, Sy=470 MPa, Se(corrected)=275 MPa, Test data indicate that the theoretical stress concentration factor for bending and axial loads...

A circular ring of radius R with a total charge 2Q uniformly distributed along its circumference...

A circular ring of radius R with a total charge 2Q uniformly distributed along its circumference lies in the x y plane with its center at the origin. (a) Find the electric field at a point with coordinates (0, 0, z0). Show all steps in your calculation. Don’t forget to represent the field in vector form - magnitude and direction! (b) Find the locations along the z axis where the electric field has its largest values (don’t forget that because...

Question