Yes, the pile foundation is quite easy to dismantle. Therefore, screw piles can be used more than once. Select piles of the required bearing capacity and size, based on the maximum weight of future structures and the type of soil. For light frame buildings suitable piles with a diameter of 66 mm, 76 mm. For more serious structures - 89 mm, 114 mm. Our designers will help determine the type and number of piles for the implementation of the plan.
Not certainly in that way. The history of the pile as a carrier in difficult soils has passed for 150 years! Starting point: 1833g. - A patent for the invention of English engineers who arranged the screw base for the lighthouse of the Maplin Sands lighthouse at the mouth of the Thames. In Europe and the Americas in the 19th century hundreds of lighthouses and piers on metal piles were built, some of which have survived to this day! And private developers there have long appreciated the cost-effectiveness, speed and durability of such foundations. The speed of construction in any latitude, in any weather without the involvement of technology could not fail to attract domestic military engineers and then industrialists (bridges, power lines, industrial buildings). But only from the beginning of the 21st century in Russia screw piles came to private housing, while in the West it became a standard long ago and passed the test of time.
To give accurate recommendations you need to know the type of soil (bearing capacity, aggressiveness to metal), the weight of the building, take into account snow and wind loads.
Landmarks are as follows:
Piles 66 mm, 76 mm - for fences, arbors.
Piles of 89 mm, 90 mm - for a bath, a verandah, an arbor.
114 mm - for the construction of wooden residential buildings and baths.
The required number of piles is always available. You need about 20-25 diameter supports 114 (more precisely, our designer will determine, based on the presence of the furnace and the internal structures in the project of the house). Pile prices include / do not include the cup value
Builders include peat soil to the group of weak-carrying. It is the screw foundation that guarantees the durability of the building on such a site. Moisture-saturated soils tend to increase in size when this very moisture freezes and to push out a shallowly buried foundation. Therefore, the pile must be screwed below the freezing level. We recommend that you do not rely on the data of your neighbors, but conduct research on your own plot, because even within it, the ground may be heterogeneous.
Indeed, in winter, the load at construction companies is reduced and in the struggle for the client they make attractive offers to developers. The screw base can be built in 1-2 days and in the winter. There are no works on digging pits and concreting in technology. And if it is planned to build on a flooded area, in the coastal zone, soft, moist soil, then winter is the most favorable period. Frozen land will provide protection for the landscape and a reliable focus for builders and equipment.
In projects under your foundation we recommend to pay attention to two facts. Watered soil is an aggressive environment for the metal, it is impossible to save on the thickness of the walls of the piles and the protective coating. In addition, to impart stability in areas with a pile pitch, it is necessary to tie it into a rigid structure with the help of a channel bar. You can calculate the version without channel with the replacement of piles to larger diameter. Contact us, calculate where you can save without sacrificing quality.
What is the price of a screw foundation? Of the cost of materials (steel sheet and anti-corrosion), work on welding, applying a protective coating and the installation of the base itself. Manufacturers-handicraftsmen reduce their costs using old metal pipes, save a penny on the thickness of the anti-corrosion coating, the thickness of the pile wall and the quality of welding. Be vigilant, poor quality piles, mistakes in design (saving on the number of supports or trimming), installation (doubtful qualifications and experience of undertaking “underpinning” hard workers) will lead to investments in repairing not only the supports, but also the structure itself.
Perhaps the main drawback is the lack of information on the characteristics of the screw foundations produced at the plant by the majority of developers. But fans of the unique design is becoming more and more in Russia. Follow the advice of friends, they will not advise the bad! The truth is that a light house does not require a bulky and expensive foundation. But lightweight concrete structures (block foundation, shallow belt foundation) are “not friendly” with weakly bearing and heaving soil.
They will periodically need to be refurbished and repaired so that the building does not suffer. You can save money by choosing a small diameter pile for an easy construction, you can screw them in manually by a brigade of 2-3 friends!
Concreting of BAU tapered helical piles is not required. It is designed to protect the internal surface of the pile pipe from oxidation. And our piles already have factory corrosion protection, both outside and inside.
Under your site may be located quicksand or the remains of an old building. What was not found under the areas of neighbors. Therefore, relying on their research is risky. If you did not dig the ground in the area to a depth of 3-5 meters, then you can not know for sure what surprises can wait for the builders and your budget.
In this case, there was a violation of technology. Piles are screwed in without prior drilling. The screw of the pile compacts the ground when screwing. The well cannot be compacted so that the pile does not start to “walk”. Unfortunately, "private teams" often spoil the reputation of decent solutions and technologies. One advice - contact the official organizations, enter into a written contract, pay attention to the financial guarantees specified in it in case of detection of flaws in work.
The more difficult the situation at the construction site, the easier it is to get out of it. Installation of the foundation of screw piles for a light house can be done manually. An important plus for you - the base of the house will not come into contact with the flooded soil. Thanks to the construction of screw piles, the house is provided with natural ventilation.