If you’re looking to install load-bearing piles or retaining walls, there are a number of different types of construction piles you can choose from. For most applications, a continuous flight auger pile (CFA) is ideal, because it can be installed in the most diverse ground conditions, and because it’s quiet and vibration-free.
Continuous flight auger piles are ideal for most soil conditions
Continuous Flight Auger (CFA) Piles are an ideal solution for most soil conditions. However, special attention may be required for certain types of projects.
Unlike rotary bored piles, CFA piling does not require casing or drilling fluids. This allows them to be installed at greater depths. Also, this method does not create disturbances in adjacent structures.
In the United States, continuous flight auger piles were first used during the fifties. They have since become widely utilized. Although they are typically installed in sand and clay soils, they are suitable for other soil conditions.
These piles are constructed by injecting concrete through a hollow stem auger. The angle of friction between the soil and the auger is calculated according to the type of soil. For example, in sand, the friction angle is 0.90; while in silty sand, it is 0.60.
These pilings are designed to provide maximum resistance to all kinds of loads. As a result, they can be used in both residential and commercial projects smihub.
They are quiet and vibration-free
CFA Piling is a quiet and vibration-free method of piling foundations. This technique is particularly suitable for the construction of new structures in urban locations and for working around existing buildings. Unlike other pile types, CFA Piles are drilled without the use of a casing.
Continuous Flight Augering (CFA) is a patented technology which has been developed to construct foundations in a vibration-free manner. In addition, this innovative method does not require the importation of cores or casings.
This technology is also ideal for a range of soil conditions. For example, it is suitable for high ground water levels and for working in environmentally sensitive areas.
Besides being cost effective, CFA piles are also quick to install. In fact, this technique is highly productive. Its ease of installation makes it suitable for a wide variety of projects, from small residential houses to large structural foundations.
Typical project production rates for private projects are between 1,000 and 1,500 feet per day. The average number of piles per day for transportation projects is lower.
They are suitable for load-bearing piles and for contiguous or secant retaining walls
A number of different types of piles can be used for retaining walls. When deciding on which type of pile to use, it is important to consider the construction techniques that will be most appropriate.
Contiguous piles are a type of retaining wall that is commonly constructed. They are often used for a wide variety of engineering projects. These walls provide support for excavations and underground utilities. In addition, they can help to stabilize the ground.
Secant piles are a similar type of retaining wall. The difference is that secant piles are a series of piles that are installed so that they overlap one another. This helps to restrict the amount of water that can ingress into the construction. However, they do not always result in a watertight structure.
In order to maintain a vertical orientation, cased CFA piles are a better choice for contiguous or secant retaining walls. These structures are constructed with heavy-duty casings.
Ground-borne vibration levels vary significantly depending on the type of ground
If you are putting a building onto a site, you should be aware of the impact of ground-borne vibration. This will depend on the type of foundation, the building itself and the location. It can also affect archaeological deposits below the pile.
There are many methods of reducing the effect of piling on archaeological sites. One method is to use vibration replacement. The process uses a vibrator to force material into the ground. Vibro columns and casings are other techniques that can increase ground-bearing capacity. However, the results can be quite variable.
Depending on the type of foundation, the type of material being installed, and the underlying ground conditions, the effects of ground-borne vibration on archaeological deposits can vary. These impacts can be localized or can affect adjacent areas.
The amount of damage caused by ground-borne vibration will also depend on the type of foundation used. For example, steel screw piles are unlikely to damage archaeological deposits. On the other hand, displacement piles can do so.