to prevent collapse aspect of boring
If the soil is so lose that it cant hold the building even with pile foundation. So, piled raft foundation is used which make the building to float like a boat. That obeys Archimedes' principle-it is buoyed up by the weight of the earth displaced in creating the foundation.
pile is the steel layer and pier is the outer most layer'
Pile cap formwork is the formwork built to mold the concrete that binding together the pile or group of piles and the structure supported by the piles such as structure's foundation or column.
Well foundation is the most commonly adopted foundation for major bridges in India. Since then many major bridges across wide rivers have been founded on wells. Well foundation is preferable to pile foundation when foundation has to resist large lateral forces.
Bentonite has an affinity for water. By packing Bentonite around the ground rod it increases the conductivity of the ground rod. Ground rods are not supposed to have a resistance above 5 ohms when compared to the utility's ground grid. Getting the ground rod into this resistance zone in bad soil conditions is aided by the use of Bentonite.
It is Direct Mud Circulation pile where water jet is let through the piling chiesel which comes out from bottom with Mud In DMC Pile Foundation the bentonite suspension is pumped into the bottom of the hole through the drill rods and it overflows at the top of the casing. The mud pump should have the capacity to maintain a velocity of 0.41 to 0.76metres per second to float the cuttings.
It is Direct Mud Circulation pile where water jet is let through the piling chiesel which comes out from bottom with Mud In DMC Pile Foundation the bentonite suspension is pumped into the bottom of the hole through the drill rods and it overflows at the top of the casing. The mud pump should have the capacity to maintain a velocity of 0.41 to 0.76metres per second to float the cuttings.
concrete qty for bulb portion in pile foundation
types of foundation....1. shallow foundation 2. deep foundation 3. pile foundation
There are various reasons such as: 1) Its not possible because pile foundation are designed for 2) Particular life cycle and its specially depends on ground conditions of soil properties. 3) Pile foundation is one part of major foundation in construction where life cycle is required more with another reason are pile foundation is used for which type of structure its also important factor considering time of design. 4) One another major factor is settlement of existing pile foundation is in specific limits or not. Also so many reasons etc. Thanks & Regards HARSHAL.S.KHODE Deputy Manager (QA/QC)
It does not meant that pile foundation is only applicable for soft soils alone. For other type of soils it will not be much economical.
By placing a plastic vapor barrier before casting the foundation
1.5 times of dia of pile.
It might be Short-board pile ;D
Matt or Raft Foundation Combined Footings Pile Cap Foundations Isolated Foundations Continous Foundation
If the soil is so lose that it cant hold the building even with pile foundation. So, piled raft foundation is used which make the building to float like a boat. That obeys Archimedes' principle-it is buoyed up by the weight of the earth displaced in creating the foundation.
pile is the steel layer and pier is the outer most layer'