Reinforcement columnar foundation is carried by means of steel rods
At the same deficiencies in columnar foundations are only two:
- Not suitable for heavy buildings of brick and high-rise buildings.
- It ruled out the creation of basements.
Types of pier foundation
Before proceeding to the detailed design and calculation of pier foundation, you should decide on what area, what type and what kind of technology will be erected on it construction. From these factors depends on the choice of material of the columnar foundations of the basement and the depth of their laying.
The first step is the foundation of everything markup
Depth of laying the foundation
Depth of the columnar foundation determined by its design, structure technological parameters and geological characteristics of the soil in the spot development.
Useful advice! In sandy soil, wherein groundwater is located at a level below 1 meter, - a pier foundation slab structures can withstand brick house.
According to the depth of laying the columnar base is divided into three main types:
- Buried - with a depth of laying below the soil freezing.
- Melkozaglublennye - with a depth of laying the 40-70 cm from ground level.
- Unburied - located on the ground surface in the complete absence of the underground part. In the place of installation with columns of soil removed topsoil and executed podsypku nonmetallic material.
The circuit arrangement of the columnar foundation laying depth 1500 mm
Pier foundation with his own hands: step by step guide
For a device pier foundation with his hands step by step instructions need to be the most detailed and visual aid.
In general, the design supporting-pier foundation - a system supports the smallest possible cross-section, located at the points of load concentration: in the corners of the building, at the intersection of walls, under the carrying beams, piers, under oven. To determine the number of separate columns, the distance between them is taken equal to 1.5-2.5 m. To link a support foundation into a unitary structure, make grillage therebetween.
Construction of wooden formwork for pier foundation
The height of the columns above the zero mark is individual and depends on the design features of the grillage.
Calculation pier foundation
The construction of pier foundation starts with the calculation. Most likely, for the independent performance calculations required of the "foundation" or any other program that can be found on the Internet and download free. The following parameters will need to work with these programs:
- The depth of occurrence of the foundation and its reinforcement.
- Location of future buildings.
The project is a frame house on the pier foundation, created in three-dimensional program
foundation construction technology with the pole and also requires additional data:
- Approximate weight of the structure, including the weight of its intended interior and furnishings.
- The total weight of the foundation itself.
- Seasonal load (wind and snow).
- Kind of soil and its properties.
- The level of soil freezing and the average temperature in the winter season.
- The level of ground water in view of its seasonal fluctuations.
As a result of the calculations made by the following values necessary for columnar foundations device will be obtained:
- The minimum number of columns.
- Sectional area of the columns and their sizes.
- The value of the bearing capacity of pillars.
The circuit arrangement of the roll of waterproofing materials for the supporting pillars
Columnar not flush foundation
Columnar not flush on the foundation piers located in increments of 1.5-2.5 m, is used quite often. Such foundations can be built on the ground slabopuchinistyh nepuchinistyh and despite the fact that the construction (wood or shield house, room, hozblok, extension or summer kitchen) has a small area and, consequently, a small weight. Furthermore - if the construction is carried out on a rocky, coarse or unwilling to fix progress the soil, the type of foundation and can be arranged at a sufficiently large area of log home or a timber. It is also possible on the construction of the foundation pillars unburied provided reduce swelling forces of influence on the structure. To do this, the ground under the legs replaced by a sand bed.
Not flush the foundation can be built on the grounds nepuchinistyh and slabopuchinistyh
As a material for the pillars may use concrete, rubble concrete, sand concrete or concrete for the foundation blocks, dimensions and prices are very diverse. However, most often taking the dimensions of the foundation blocks 20h20h40. The price of such a foundation, as well as necessary for its construction the number of units can be calculated independently or through "of the foundation" online calculator. You can also make your own hands columnar foundations of brick, but it is necessary to take into account that it is unacceptable to use silicate bricks or ceramic with a low frost resistance.
The circuit arrangement of the supporting column of concrete
Useful advice! Occasionally (e.g., if the columnar foundation device for a bath) of the support may be wood - from the butt of oak or pine with a diameter of 20-30 cm, impregnated with tar or waste oils. To increase the stability of the support is immersed in a 10-15-cm layer of concrete mortar poured into the pre-dug pit.
When the device with your hands from the foundation blocks 20h20h40 videos and step by step instructions will help you understand the technology works, to understand the process and to more accurately assess the financial costs.
The construction of pier foundation with his own hands
Melkozaglublenny pier foundation
Melkozaglublenny foundation - one of the most popular varieties of columnar foundations. Money and effort, which requires its device are minimal, and the application range for the frame-type structures is very wide.
As a basis for frame house or an easy bath often make pier foundation using pipes as a formwork for concrete. Since the entire load will take concrete pillar, pipe material specific values are not It is: and suitable plastic, and asbestos pipe, typically used for sewer device networks.
Related article:
Basement waterproofing roll materials.Execution waterproofing work on the foundation of rolled materials of various types: a detailed instruction.
Diameter pipe depends on the load. For light-type buildings arbors or additions only 10 cm, for the building of logs needed tube of 25-30 cm. Amount of concrete in the end precisely determined diameter of the pipe. 10 m tube 10 cm in diameter need to 0.1 m3 concrete pipe of 20 cm would require 0.5 cubic meter, a 30 cm - 1 cubic meter. The calculation is made taking into account the concrete foundation pad.
Pouring concrete raft foundation with his own hands
The same pattern can be mounted with their hands columnar foundation of the plastic pipes. Videos and photos to help sort out the intricacies of the workflow as a whole simple.
Pier foundation with grillage
Grillage is a system of strapping and randbalok beams. She firmly fix the foundation, excluding its shift in the horizontal plane or tilting of the assembly. In the presence of structural grillage load is distributed evenly across all established columnar supports, resulting in increased stability and resistance to degradation.
sets out the required work step by step to facilitate the understanding of the process.
After removal of the formwork, the concrete surface of the support to be treated waterproofing composition
Grillage device:
There are two options grillage installation: laying it on the ground or raising above its surface. The advantage of the second method - an exception to the forces of swelling:
- Installing formwork. Formwork set a solid foundation around the perimeter.
- Filling with sand bottom formwork and vystilanija its polyethylene.
- Assembly and installation of the reinforcing cage of rod diameter of 12-14 mm.
- Immediate pouring concrete grillage with venting of the vibrator solution.
- Removing the formwork after the concrete setting and cleaning the sand out from under the pile cap.
The circuit device of a reinforced concrete grillage jumper
The cost of the device pier foundation
The total cost of pier foundation is the sum of the cost of materials and the cost of the actual work. In most cases, it is much lower than the cost of other types of foundations, because they can be built virtually all types of columnar foundations with their own hands. Videos and photos, instructions and manuals found on the Internet, too, as a rule, are cheap or free.
The calculation of the cost of most kinds of columnar foundation may do it yourself with the help of special online calculators, or programs. Many of them are quite easy to find on the Internet, free of charge and has an intuitive interface.
