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Refer to Figure 11.26b. For the drilled shaft with bell, given: Thickness of active zone, Z = 9 m Dead load = 1500 kN Live load = 300 kN Diameter of the shaft, D, = 1 m Zero swell pressure for the clay in the active zone = 600 kN/m? Average angle of plinth-soil friction, s = 20° Average undrained cohesion of the clay around the bell = 150 kN/m? Determine the diameter of the bell, D3. A factor of safety of 3 against uplift is required with the assumption that dead load plus live load is equal to zero.

Refer to Figure 11.26b. For the drilled shaft with bell, given: Thickness of active zone, Z = 9 m Dead load = 1500 kN Live load = 300 kN Diameter of the shaft, D, = 1 m Zero swell pressure for the clay in the active zone = 600 kN/m? Average angle of plinth-soil friction, s = 20° Average undrained cohesion of the clay around the bell = 150 kN/m? Determine the diameter of the bell, D3. A factor of safety of 3 against uplift is required with the assumption that dead load plus live load is equal to zero.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Refer to Problem 11.8. If an additional requirement is that the factor of safety against uplift is at least 4 with the dead load on (live load = 0), what should be the diameter of the bell?

Refer to Figure 11.26b. For the drilled shaft with bell, given: Thickness of active zone, Z = 9 m Dead load = 1500 kN
Transcribed Image Text:Refer to Figure 11.26b. For the drilled shaft with bell, given: Thickness of active zone, Z = 9 m Dead load = 1500 kN
Live load = 300 kN Diameter of the shaft, D, = 1 m Zero swell pressure for the clay in the active zone = 600 kN/m? Average angle of plinth-soil friction, s = 20° Average undrained cohesion of the clay around the bell = 150 kN/m? Determine the diameter of the bell, D3. A factor of safety of 3 against uplift is required with the assumption that dead load plus live load is equal to zero.
Transcribed Image Text:Live load = 300 kN Diameter of the shaft, D, = 1 m Zero swell pressure for the clay in the active zone = 600 kN/m? Average angle of plinth-soil friction, s = 20° Average undrained cohesion of the clay around the bell = 150 kN/m? Determine the diameter of the bell, D3. A factor of safety of 3 against uplift is required with the assumption that dead load plus live load is equal to zero.
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