WorksheetsAAR653_SOILS
Total questions: 11
Worksheet time: 15mins
There are THREE types of shallow foundation, which include:-
(you may tick more than one)
Spread (pad) footing
Mat (raft) foundation
Powder foundation
Floating foundation
The foundation consider as shallow if the ___ of the foundations is ___ than or ___ to the ___ of the foundation
width, less, equal width
depth, less, equal width
depth, less, equal depth
width, less, equal length
Following listed are steps choosing types of foundation EXCEPT
Obtain the required information concern in the nature of the superstructure and the load to the transmitted to the foundation.
Obtain the size of superstructure and substructure
Obtain the subsurface soil conditions
Take consideration the existing condition such as bearing capacity of the soil carry the required load and the adverse effects on the structure due to differential settlements.
One or two types of foundation are selected on the basis of preliminary studies.
Requirement for design must be include provision for floating foundation EXCEPT:
Safety
Functional and reliability
Durability
Economy
Soil Condition
The following answer is NOT types of soil based on modes of its formation.
Transported Soil
Residual Soil
Organic Soil
Composite Soil
Geologists classify all rocks into three basic groups of Igneous, Sedimentary and Metamorphic. What is Metamorphic?
Arrived on the surface of the earth as molten lava and cooled
These rock have become solid from a melted liquid state
The original rock undergoes both
chemical and physical alterations.
Weathering reduces the rock mass to fragmented particles
Geologists Briefly explain the Shear Strength of soil. List THREE (3) that factor govern to increase of shear strength in soil.
(you may tick more than one)
The frictional resistance between the particles at their point of contact
The action of temperature, gravity, wind, rain and chemical weathering
Cohesion between particles
Interlocking between particles.
All above
There are three types of earth pressures on the basis of the movement of the wall.Which is NOT on the list?
Surcharge pressure
Earth Pressure at rest
Active Earth Pressure
Passive Earth Pressure
Active earth pressure by means?
All the materials are in its natural state then the pressure applied by the material
When the wall moves towards the backfill, there is an increase in the pressure on the wall and this increase continues until a maximum value is reached
A decrease in the pressure on the wall and this decrease continues until a minimum value will be reached and after this, no reduction in the pressure and the value will become constant
No increasing in the pressure and the value will become constant
Please select THREE(3) types of retaining structure.
(you may tick more than one)
Gravity wall
RC Wall and Anchored
Embeded wall
Hook wall
All above
What is Gabion Wall?
Build of cuboids metal cages or baskets made up from a square grid of steel fabric, usually 5 mm in diameter and spacing 75 mm
This baskets are usually 2m long and 1m2 in cross-section, filled with stone particles. A central diaphragm fitted in each metal basket divides it into two equal 1m3 section and adds stability
During construction the stone-filled baskets are secured together with steel wire (2.5 mm in diameter).
The base of a gabion wall usually about 0.5h.
All above
