Foundation Piling Experience is Essential
There numerous different methods of foundation piling and these can be used for a multitude of different applications and structures. In order for a building to be safe and secure, appropriate foundation piles need to be implemented. Think about a tree. When we see a tree, all that is visible to us is the trunk, the branches and leaves; however, deep into the ground, runs a complex system of roots which anchor the tree in place and prevent it from sliding or toppling. Buildings and other large structures work in much the same way; the roots are replaced with foundation piling.
It is crucial to the safety of a large structure that foundation piling is carried out only by a qualified piling contractor. The same applies if the piling foundations of an existing building are in need of repair. A qualified piling contractor has an in depth understanding of different pile types, piling methods and which are suitable for each project. It is more important to find a quality piling contractor rather than a cheap one. In the long-run, you will save money by spending more on foundation piling services as there will be less chance of having to pay out money on repairs after experiencing shoddy workmanship.
Advantages of Top Driven Piles
Different piles are more suitable for some jobs than others. By weighing up the advantages and disadvantages of each pile type, contractors can decide which piling types are the most suitable for their project.
Top driven piles have a long list of advantages to consider when deciding on what piles to use. Capacities can be calculated to ensure that reduced the risk of problems occurring from ground conditions. Hammer force can be adjusted endlessly without affecting the accuracy and consistency of the hammer energy. Unexpected capacity reductions by hammer energy losses are not a problem when the hammer hits any deflected piles.
Unlike bored piles, top driven piles are cured before they are delivered to the site and can be CASE tested to double their Safe Working Load (SWL) rather than having to wait until the concrete has been cured. Simulated static tests (CAPWAP) can be carried out on the system and rig. Driving resistance can be monitored continuously via a computer.
Top driven piles are not affected by any water leakages from the ground and the square-ended design means that obstructions are easily dealt with. Finally, top driven piles are manufactured in a very controlled environment which means that they completely eliminate the risk of inclusions or cavities in the concrete.
Mini Piles are the way forward
Mini piles – also known as micropiles or lightweight piles – are an alternative to other types of piles. They have been developed from older pile designs such as driven piles and screw piles. They have become a more popular choice over the years as they have advantages over driven and screw piles.
Mini piling is a reliable option which can be utilised in situation that more traditional piling methods could not cope with. Because mini piles are a lot smaller they can be placed in much smaller and confined spaces with relative ease. This means that contractors end up saving time and money because they do not have to think up or turn to expensive solutions for difficult construction projects.
Here is a quick overview of all the many benefits of using mini piles:
• They are the best option to choose when ground conditions are poor.
• There is no need for excavation or soil removal.
• An alternative to heavier piles when weight allowance is limited.
• Mini piles cause much lower levels of vibration.
• Mini piles are specialised equipment which are crucial for certain projects and circumstances.
• They generated limited noise and fumes and are therefore ideal for projects when environmental issues are a concern.
The Advantages of CFA Piling
Continuous flight auger piles (CFA piles) have become a popular choice over the last few years. CFA piles are a cheaper option than other piling alternatives but with careful planning and design, quality equipment and experienced contractors, they can be highly efficient.
CFA piles are a non-displacement pile, which means that the risk of damage to surrounding foundations and underground utilities from ground displacement or densification of sands is largely reduced. Damage is much more common when using displacement piles.
Installation of CFA piles can be carried out with limited noise and vibration. If any problems are encountered during implementation of the CFA piles, then it is a relatively straight forward process to re-drill the foundations and reinstall the pile. The pile group or caps, therefore, do not need to be redesigned.
Different elements of the CFA pile installation process can be monitored using a flow meter. Data that can be recorded includes penetration / uplift per revolution, auger depth, concrete supply per increment of auger uplift during placing, and injection pressure at the auger head.
The work of a Piling Contractor
Anyone who is looking to construct a new building or renovate an existing building will have to look to a piling contractor to complete any foundation work that is needed. Certain measures need to be implemented to ensure that the structure is secure and will not move or collapse. For anyone who is unfamiliar with the inner workings of a construction project will not fully comprehend the importance of the work of a piling contractor. It is quite overwhelming to see the extensive network of beams, base foundations and posts that ensure the stability of a building.
The main areas of work for a piling contractor are making groundwork measurements, including building depth and width calculations. They will also excavate holes, deep into the ground using backhoes and drilling machinery which the weight of the building will rest on. Piling contractors also carry out the process of piling, which involves driving piles into the holes, creating enclosed sections for the concrete foundations. For larger structures, steel and pouring concrete are layered up for increased strength and durability.
Piling is the most crucial part of construction work, as without it, buildings would collapse. Piling contractors work alongside a range of engineers, including structural engineers, geotechnical engineers, area contractors, construction foremen, and site fitters to make sure that all areas of the construction process are covered and are problem-free.