WorksheetsEG7004
Total questions: 12
Worksheet time: 7mins
In tied-back cantilever sheet pile wall design to EC7, equilibrium of moments is calculated for an arbitrary rotation point at depth "d" below the ground surface in passive zone.
In the UK what design approach is used for the STR and GEO limit states?
Design approach 2
Design approach 1 Combination 2
Design approach 3
Design approach 1 Combinations 1 and 2
What is the design value for the characteristic internal friction angle of 27 degrees with a partial factor of 1.25?
29
22
27
25
Design of sheet pile walls is based on ---------- Soil Stresses acting on the wall and Net Water Pressures acting on the wall.
(a)
British Standards explicitly state the requirement for the designer to allow for surcharge to be applied to the surface of the retained fill. What is the value of the surcharge?
10 kPa
5 kPa
100 kPa
15 kPa
Which answer clearly states a disadvantage of Limit Equilibrium method?
A collapse mechanism only is considered.
The analysis is based only on one single assumed soil strength.
The method cannot accurately predict forces acting on the structure or structural deflections.
All options.
Which method of analysis applies constitutive models which relate the stresses to the strains in the soil and on the other components making up the structure?
Ultimate Limit State
Limit Equilibrium
Soil-Structure Interaction
Consolidation
Calculate the total consolidation of the clay layer. mv value for the clay soil is 0.20 m2/MN. The foundation is 2 m x 3 m in plan and subjected to a load of 2000 kN.
73 mm
48.5 mm
0.073 mm
56.2 mm
Calculate the consolidation settlement of the clay layer 6 months after loading if cv=0.5 m2/year. Use the same values from the previous question (mv=0.20 m2/MN, footing dimensions 2m by 3m, and applied load of 2000 kN).
48.5 mm
11 mm
8.5 mm
17 mm
Pile design in the UK is developed based on the results of physical pile tests or in-situ soil tests, which are carried out prior to design.
Calculate the Ultimate capacity for a 12-metre long 350mm diameter CFA pile installed in a clay soil of uniform undrained strength Cu = 90 kPa and α=0.50
672 kN
600 kN
80 kN
269 kPa
For calculation of shaft resistance in sands, what method is generally used?
α method
β method
δ method
None of the above.
