SPONSORED
USAGE AND SELECTION OF PILE
Whenever the soil stratum immediately below the foundation is unable to sustain loads imposed on it by the superstructure, piles are utilised to transmit the structural loads into the ground without risk to shear failure or excessive settlement. Almost all piles used receive support from both end bearing and shaft resistance.
1. To carry the superstructure loads into or through a soil stratum. Both vertical and lateral loads may be involved.
2. To resist uplift, or overturning, forces as for basement mats below the water table or tosupport tower legs subjected to overturning.
3. To compact loose , cohesionless deposits through a combination of pile volume displacement and driving vibrations. These piles may later be pulled.
4. To control settlement when spread footings or a mat is on a marginal soil or is underlain by a highly compressible stratum.
5. To stiffen the soil beneath machine foundations to control both amplitudes of vibration and the natural frequency of the system
6. As an additional safety factor beneath bridge abutments and/or piers, particularly if scour is a potential problem.
Factors affecting pile selection
The choice of piles to be used for a particular project would certainly depends on the four main factors. The main factors which normally controls the selection which will be explained in next post are :-
a) Location and type of structure
b) Ground conditions
c) Durability
d) Overall cost of pile.
Whenever the soil stratum immediately below the foundation is unable to sustain loads imposed on it by the superstructure, piles are utilised to transmit the structural loads into the ground without risk to shear failure or excessive settlement. Almost all piles used receive support from both end bearing and shaft resistance.
1. To carry the superstructure loads into or through a soil stratum. Both vertical and lateral loads may be involved.
2. To resist uplift, or overturning, forces as for basement mats below the water table or tosupport tower legs subjected to overturning.
3. To compact loose , cohesionless deposits through a combination of pile volume displacement and driving vibrations. These piles may later be pulled.
4. To control settlement when spread footings or a mat is on a marginal soil or is underlain by a highly compressible stratum.
5. To stiffen the soil beneath machine foundations to control both amplitudes of vibration and the natural frequency of the system
6. As an additional safety factor beneath bridge abutments and/or piers, particularly if scour is a potential problem.
Factors affecting pile selection
The choice of piles to be used for a particular project would certainly depends on the four main factors. The main factors which normally controls the selection which will be explained in next post are :-
a) Location and type of structure
b) Ground conditions
c) Durability
d) Overall cost of pile.
