1. A SEMINAR ON :
PILEFOUNDATION
PRESENTED BY
1) MR. ROHIT .H. THAKARE
SUB INCHAREGE
Lect. Mr. N . G. WANVE
2. INTRODUCTION
What is pile foundation. . . .?
The pile foundation is used to describe a construction for the foundation of
a wall or a pier, which is supported on the pile.
Where it is placed …?
The piles may be placed separately or they may be placed in
the form of cluster throughout the length of the wall.
Where it is adopted …?
Piles are adopted when the loose soil extended to a great
depth.
3. Applicationof piles…
The piles are applicable at the places where,
The load coming from the structure is very high & the distribution of the load on soil is
uneven.
The subsoil water level is likely to rise or fall appreciably.
The pumping of subsoil water is too costly for keeping the foundation trench in dry
condition.
5. Loadscomingon pilefoundations
All the loads from the super structure like,
- Live loads
- Dead loads
- Wind loads
- Seismic load
The loads from the surrounding soil in case of seismic event.
Water loads in case of off-shore structure.
6. PileMaterials
The materials which are used in the construction of piles are as follows :-
Timber piles
Steel piles
Concrete piles
13. Advantages
1. Piles can be precast to the required specifications.
2. Piles of any size, length and shape can be made in advance and used at the site.
As a result, the progress of the work will be rapid.
3. A pile driven into granular soil compacts the adjacent soil mass and as a result
the bearing capacity of the pile is increased.
4. The work is neat and clean. The supervision of work at the site can be reduced to
a minimum. The storage space required is very much less.
14. Disadvantages
1. Precast or prestressed concrete piles must be properly reinforced to withstand
handling stresses during transportation and driving.
2. Advance planning is required for handling and driving.
3. Requires heavy equipment for handling and driving.
15. CONCLUSION
Piles are often used because adequate bearing capacity cannot be found at shallow enough
depths to support the structural loads. It is important to understand that piles get support from
both end bearing and skin friction. The proportion of carrying capacity generated by either end
bearing or skin friction depends on the soil conditions. Piles can be used to support various
different types of structural loads.
