quiz reply
1 Bearing capacity
Question1How does the failure pressure given by the circular arc mechanism differ from that given by the wedge and fan mechanism? It is:
Correct answer: greater You answered greater Score 2
The failure pressure given by the circular arc mechanism is greater
Question2The allowable bearing capacity provides safety against instability and also against what else being exceeded?
Correct answer: the permissible settlement You answered the permissible settlement Score 2
The allowable bearing capacity also takes account of the permissible settlement
Question3The limiting bearing stress a soil can sustain before catastrophic settlement occurs is known as the:
Correct answer: Ultimate bearing capacity You answered Ultimate bearing capacity Score 2
The limiting bearing stress a soil can sustain is known as the Ultimate bearing capacity
Question4How does the the presence of a surface surcharge affect the failure pressure? If the surcharge increases the failure pressure:
Correct answer: the failure pressure increases You answered the failure pressure increases Score 2
If the surcharge increases the failure pressure then the failure pressure increases
Question5The maximum load a foundation can sustain is governed by
Correct answer: the shear strength You answered the shear strength Score 2
The maximum load a foundation can sustain is governed by the shear strength
2 Bearing capacity equation (undrained)
Question6Compared with a strip foundation of the same area, the ultimate bearing capacity of a square foundation is
Correct answer: between 10 and 30% more You answered between 10 and 30% more Score 2
The ultimate bearing capacity of a square foundation is between 10 and 30% more than a strip foundation of the same area.
Question7Skempton's expression for ultimate bearing capacity under undrained loading conditions incorporates a bearing capacity factor which varies with the:
Correct answer: shape and depth of the footing You answered shape and depth of the footing Score 2
Skempton's expression for ultimate bearing capacity under undrained loading conditions incorporates a bearing capacity factor which varies with the shape and depth of the footing
Question8The ultimate bearing capacity under undrained loading conditions is stated in terms of the soil's:
Correct answer: Undrained shear strength (su) You answered Undrained shear strength (su) Score 2
The ultimate bearing capacity under undrained loading conditions is stated in terms of the soil's: Undrained shear strength, su
Question9If a circular arc mechanism is assumed for the undrained failure condition, which value will be found for the bearing capacity factor Nc?
Correct answer: 5.52 You answered 5.52 Score 2
If a circular arc mechanism is assumed for the undrained failure condition Nc = 5.52
Question10Which of the following expressions is commonly used to give the undrained ultimate bearing capacity? (N = a bearing capacity factor)
Correct answer: qf = su N + qo You answered qf = su N + qo Score 2
qf = su N + qo is commonly used to give the undrained ultimate bearing capacity.
3 Bearing capacity equation (drained)
Question11Calculate the ultimate drained bearing capacity of a strip footing 2.0m wide, founded at the surface. c'=0, f' = 32o and g = 19.0 kN/m3(Nc=??.5, Nq23.2, Ng=24.9 (Hansen))qf = ultimate drained bearing capacity = 473 (±2.365) kPa Calculate Nc, Nq and Ng Q11: You answered 473.1; Score 3
The ultimate drained bearing capacity (qf kPa) of a strip footing 2.0 m wide, founded at the surface of a soil for which c' = 0, f' = 32o and g = 19.0 kN/m3(Nc=35.5, Nq23.2, Ng=24.9 (Hansen)) = 473
Question12The expression for the drained ultimate bearing capacity of a strip footing is modified for rectangular and circular foundations using:
Correct answer: shape and depth factors You answered shape and depth factors Score 2
The expression for the drained ultimate bearing capacity of a strip footing is modified for rectangular and circular foundations using shape and depth factors
Question13Which of the following expressions is commonly used to give the drained ultimate bearing capacity of a strip footing? Nc, Nq & Ng are bearing capacity factors
Correct answer: qf = c'Nc + qoNq + 0.5BgNg You answered qf = c'Nc + qoNq + 0.5BgNg Score 2
The expression is commonly used to give the drained ultimate bearing capacity of a strip footing is qf = c'Nc + qoNq + 0.5B gNg Nc, Nq & Ng are bearing capacity factors
Question14Calculate the ultimate drained bearing capacity of a strip footing 2.0 m wide, founded at a depth of 1.5m. c' = 0, f' = 32o and g = 19.0 kN/m3 Assume depth factors = 1 for depth < breadth. qf = No answer kPa.
The ultimate drained bearing capacity, qf=1134kPafor a strip footing 2.0 m wide, founded at a depth of 1.5 m in a soil for which c'=0, f'=32o and g=19.0 kN/m3
Question15Calculate the allowable bearing capacity for a foundation when qf=900 kPa, qo=30 kPa. The required factor of safety is 3.0. qa = 320 (±1.6) kPa Q15: You answered 320; Score 3
The allowable bearing capacity for a foundation when qf = 900 kPa, qo = 30 kPa and the required factor of safety is 3.0. = 320The factor of safety is not applied to the overburden
4 Piled foundations
Question16Calculate the skin friction (shaft) capacity, Qs, for a 600 mm diameter pile in a clay. The pile is 10m long and undrained shear strength increases from 50kPa at the to 90 kPa at the base. Adhesion factor = 0.4. Qs = 528 (±2.64) kN Q16: You answered 527.79; Score 3
Question17The end-bearing resistance Qb of a pile in clay is given by:
Correct answer: Qb = Nc.su.Ab You answered Qb = Nc.su.Ab Score 2
Question18Calculate the end-bearing capacity, Qb, for a 600 mm diameter pile in a clay which has an undrained shear strength of 90 kPa. Bearing capacity = 229 (±1.145) kN You may enter a formula in the box above then click the [Calc] button to evaluate that formula. Click [2dp] to round the answer to 2 decimal places. Enter a leading 0 for values less than 1 (e.g. 0.2 not .2). Use 22/7 for p Q18: You answered 229.02; Score 3
Question19The appropriate expression for the shaft capacity (resistance) Qs of a pile in a sand or gravel is:
Correct answer: Qs = S(As.ts) You answered Qs = S(As.ts) Score 2
Question20The load capacity of a pile is directly related to the:
Area of the base True You answered Truescore 2
Diameter of the pile True You answered Truescore 2
Shear strength of the soil True You answered Truescore 2
Volume of the pile False You answered Falsescore 2
Length of the pile True You answered Truescore 2
Internal strength of the pile False You answered Falsescore 2
Back to main courseworkpage
Your score, 52 out of 55 = 94%, has been recorded
Been copying all my online exam test results for Uni. Good for revision
Although coming on these forums during revision, isnt good
1 Bearing capacity
Question1How does the failure pressure given by the circular arc mechanism differ from that given by the wedge and fan mechanism? It is:
Correct answer: greater You answered greater Score 2
The failure pressure given by the circular arc mechanism is greater
Question2The allowable bearing capacity provides safety against instability and also against what else being exceeded?
Correct answer: the permissible settlement You answered the permissible settlement Score 2
The allowable bearing capacity also takes account of the permissible settlement
Question3The limiting bearing stress a soil can sustain before catastrophic settlement occurs is known as the:
Correct answer: Ultimate bearing capacity You answered Ultimate bearing capacity Score 2
The limiting bearing stress a soil can sustain is known as the Ultimate bearing capacity
Question4How does the the presence of a surface surcharge affect the failure pressure? If the surcharge increases the failure pressure:
Correct answer: the failure pressure increases You answered the failure pressure increases Score 2
If the surcharge increases the failure pressure then the failure pressure increases
Question5The maximum load a foundation can sustain is governed by
Correct answer: the shear strength You answered the shear strength Score 2
The maximum load a foundation can sustain is governed by the shear strength
2 Bearing capacity equation (undrained)
Question6Compared with a strip foundation of the same area, the ultimate bearing capacity of a square foundation is
Correct answer: between 10 and 30% more You answered between 10 and 30% more Score 2
The ultimate bearing capacity of a square foundation is between 10 and 30% more than a strip foundation of the same area.
Question7Skempton's expression for ultimate bearing capacity under undrained loading conditions incorporates a bearing capacity factor which varies with the:
Correct answer: shape and depth of the footing You answered shape and depth of the footing Score 2
Skempton's expression for ultimate bearing capacity under undrained loading conditions incorporates a bearing capacity factor which varies with the shape and depth of the footing
Question8The ultimate bearing capacity under undrained loading conditions is stated in terms of the soil's:
Correct answer: Undrained shear strength (su) You answered Undrained shear strength (su) Score 2
The ultimate bearing capacity under undrained loading conditions is stated in terms of the soil's: Undrained shear strength, su
Question9If a circular arc mechanism is assumed for the undrained failure condition, which value will be found for the bearing capacity factor Nc?
Correct answer: 5.52 You answered 5.52 Score 2
If a circular arc mechanism is assumed for the undrained failure condition Nc = 5.52
Question10Which of the following expressions is commonly used to give the undrained ultimate bearing capacity? (N = a bearing capacity factor)
Correct answer: qf = su N + qo You answered qf = su N + qo Score 2
qf = su N + qo is commonly used to give the undrained ultimate bearing capacity.
3 Bearing capacity equation (drained)
Question11Calculate the ultimate drained bearing capacity of a strip footing 2.0m wide, founded at the surface. c'=0, f' = 32o and g = 19.0 kN/m3(Nc=??.5, Nq23.2, Ng=24.9 (Hansen))qf = ultimate drained bearing capacity = 473 (±2.365) kPa Calculate Nc, Nq and Ng Q11: You answered 473.1; Score 3
The ultimate drained bearing capacity (qf kPa) of a strip footing 2.0 m wide, founded at the surface of a soil for which c' = 0, f' = 32o and g = 19.0 kN/m3(Nc=35.5, Nq23.2, Ng=24.9 (Hansen)) = 473
Question12The expression for the drained ultimate bearing capacity of a strip footing is modified for rectangular and circular foundations using:
Correct answer: shape and depth factors You answered shape and depth factors Score 2
The expression for the drained ultimate bearing capacity of a strip footing is modified for rectangular and circular foundations using shape and depth factors
Question13Which of the following expressions is commonly used to give the drained ultimate bearing capacity of a strip footing? Nc, Nq & Ng are bearing capacity factors
Correct answer: qf = c'Nc + qoNq + 0.5BgNg You answered qf = c'Nc + qoNq + 0.5BgNg Score 2
The expression is commonly used to give the drained ultimate bearing capacity of a strip footing is qf = c'Nc + qoNq + 0.5B gNg Nc, Nq & Ng are bearing capacity factors
Question14Calculate the ultimate drained bearing capacity of a strip footing 2.0 m wide, founded at a depth of 1.5m. c' = 0, f' = 32o and g = 19.0 kN/m3 Assume depth factors = 1 for depth < breadth. qf = No answer kPa.
The ultimate drained bearing capacity, qf=1134kPafor a strip footing 2.0 m wide, founded at a depth of 1.5 m in a soil for which c'=0, f'=32o and g=19.0 kN/m3
Question15Calculate the allowable bearing capacity for a foundation when qf=900 kPa, qo=30 kPa. The required factor of safety is 3.0. qa = 320 (±1.6) kPa Q15: You answered 320; Score 3
The allowable bearing capacity for a foundation when qf = 900 kPa, qo = 30 kPa and the required factor of safety is 3.0. = 320The factor of safety is not applied to the overburden
4 Piled foundations
Question16Calculate the skin friction (shaft) capacity, Qs, for a 600 mm diameter pile in a clay. The pile is 10m long and undrained shear strength increases from 50kPa at the to 90 kPa at the base. Adhesion factor = 0.4. Qs = 528 (±2.64) kN Q16: You answered 527.79; Score 3
Question17The end-bearing resistance Qb of a pile in clay is given by:
Correct answer: Qb = Nc.su.Ab You answered Qb = Nc.su.Ab Score 2
Question18Calculate the end-bearing capacity, Qb, for a 600 mm diameter pile in a clay which has an undrained shear strength of 90 kPa. Bearing capacity = 229 (±1.145) kN You may enter a formula in the box above then click the [Calc] button to evaluate that formula. Click [2dp] to round the answer to 2 decimal places. Enter a leading 0 for values less than 1 (e.g. 0.2 not .2). Use 22/7 for p Q18: You answered 229.02; Score 3
Question19The appropriate expression for the shaft capacity (resistance) Qs of a pile in a sand or gravel is:
Correct answer: Qs = S(As.ts) You answered Qs = S(As.ts) Score 2
Question20The load capacity of a pile is directly related to the:
Area of the base True You answered Truescore 2
Diameter of the pile True You answered Truescore 2
Shear strength of the soil True You answered Truescore 2
Volume of the pile False You answered Falsescore 2
Length of the pile True You answered Truescore 2
Internal strength of the pile False You answered Falsescore 2
Back to main courseworkpage
Your score, 52 out of 55 = 94%, has been recorded
Been copying all my online exam test results for Uni. Good for revision
Although coming on these forums during revision, isnt good
Last edited by Snake (2007-01-10 13:41:32)
