Conductor Pipe Hammers Types
|Conductor pipe hammering|
Conductor Pipe can be installed either by driving with a pile hammer or by pre-drilling a hole and cementing.
Conductor Pipes Pile HammersDiesel pile hammers are used for surface driving operations on conductor pipe. The driving depth of the conductor pipe is a function of the sediments in the ground.
The most common used system is the ‘Delmag - D44 or D46’ which has a hammer weight of 18t with a variable delivery fuel pump. Below table, shows the specifications of others types of Delmag Hammers. The Manufacturer's Operating Procedures must be followed when planning driving operations.
|Delmag Diesel Hammer Specifications|
|Typical Diesel Pile Hammer|
Below table, shows the normal and maximum blows/ft for different Conductor Pipes and different hammer sizes.
|Blows/ft for Various CPs and Hammers|
Conductor Pipe Hydro-Hammer
|Frank’s S-90 Hydrohammer|
The net energy applied to the pile, which is measured during every blow, is monitored and can be regulated from the maximum to 5% or less. Since the measure of energy is precisely known, the force applied to the pile can be accurately computed.
One particularly unique advantage of the Hydrohammer is the control system’s ability to shut off the ram automatically if the pile starts to run ahead of the hammer in soft soils, e.g. due to:
- The hammer is not positioned correctly on the pile.
- Stroke rate becoming too high.
- Blow energy is too high.
Other advantages unique to this hydraulic hammer are:
- It can operate at any angle, even horizontally.
- It has an optional printer available to produce a report of the piling operation.
- It can be used onshore or offshore, in air or submerged under water.