What is the maximum depth at which helical piers can be installed? Most are put between 10 and 25 feet below ground, although they may need to be inserted deeper if the requisite torque is not met. Some piles have been constructed as deep as 100 feet.
The strength of a pile depends on its size and how far it is from the tip. Smaller piles are stronger than larger ones because more surface area means more strength per unit length. Also, closer together they are placed, the stronger their combined effect will be. Piles ten feet or less in diameter can be used for light loads, while those 12 inches or greater are designed for heavy duty use.
The strength of a helical pile system is determined by the number of turns it has. The stronger the turn, the stronger the whole pile will be. Also, different materials can be used for the turns - wood for lighter weight, metal for strong support. Finally, bigger numbers mean a stronger pile.
An average-sized house with four walls and a roof consumes about 7,000 pounds of steel. If the pile system is also included in the calculation, then it can account for another 5,000 pounds or more.
Bored piles can be drilled to depths of more than 80m and have average diameters of up to 2.4m. The maximum depth that a single pile can be driven is determined by the material being piled and its intended use. In general, for strong, stable construction, piles should not be deeper than 60m or 80m depending on the type of soil they are placed in.
The deepest pile ever drilled was in Canada, where one was placed at 99m below sea level. This was later found to be able to support a load of 10,000kg per square meter (km/sq m). The average pile density used in this case was about 1km-2/sq m.
In Europe, the highest pile density recorded was in France, where 3km-4/sq m were used. This is much less than what was used in Canada but still very high compared with other countries where averages range from 500 to 1000km-4/sq m.
The maximum load that a single pile can support depends on its diameter and length, as well as the type of soil it's placed in. If the pile is longer than 75% of its diameter, then it can support a load equal to half of its weight.
The depth varies depending on the site; if it's under a garden, patio, or similar structure, it just has to be 1310mm deep, but if it's under your driveway, it should be 1510mm deep to allow for a little additional top fill. If you don't want to go so far, consider our shallow-dig soakaway choices. They're great if you need something that can be built in less than 10 minutes and don't have much money.
For most households, a soakaway is going to be more than sufficient to meet their drainage needs. However, if you live in an area where flooding is a concern, or if you plan to sell your house in the future, then it might make sense to go ahead and also install a piped drain system. This will help avoid any potential problems with sewage back up into your home.
A soakaway is basically a hole dug into the ground - usually in your yard or nearby public space - that you fill with water each time you need to dispose of some household waste. The liquid flows through the hole into nearby storm drains or other sewer lines, where it is safely disposed of.
Soakaways are commonly used in areas where there is not enough room under your house or garage for a proper plumbing system. They're also useful if you plan to rent out rooms in your house. Landlords may require you to provide your own drainage system if the property below the tank does not have good access to a public sewer line.
The cost of a helical pier is determined by the structure's design, size, and weight, as well as the surrounding soil conditions. Because of these numerous factors, the cost of a helical pier installation might range from $15 to $30 per foot. As a result, a typical 20-foot helical pier can range in price from $300 to $600 per piece. However, the overall cost of a helical pier depends on how it is designed and installed.
The main advantage of a helical pier is its ability to lift heavy loads without damaging the ground or nearby structures. This is especially useful when working with heavy machinery or making large repairs to buildings or foundations. A helical pier also provides stability for other structures or objects placed on top of it. This can be helpful in preventing erosion or the loss of land behind your property line. Finally, a helical pier is ideal for supporting large objects such as lights, antennas, or power lines. It allows these items to be removed from their original locations if and when needed.
A helical pier consists of two parallel shafts, one above the other. The upper shaft is usually hollow and supports the load while the lower shaft connects it to the base material. The weight of the load causes the upper shaft to rotate around its own axis, extending or retracting the lower shaft as necessary. The direction that the shafts extend or retract is called the "helix".