Strip foundations: advantages, disadvantages, construction technology

Strip foundations are often used in the construction of frame houses, because in terms of technology is quite simple structure. It can be build without the involvement of specialized machinery.

At the heart of the design laid reinforced concrete strip located around the perimeter of the structure. It runs under all load-bearing walls.

Strip foundation is relevant in the following cases:

- If you lie on a plot of uneven grounds.
- If there is a risk of subsidence.
- If the heavier elements (for example, if the walls are lined with bricks) are used in the construction of a frame house.
- If the density of the walls is from one to one and a half thousand. kg / cubic meter.
- If the customer is planning to build a basement.

Strip foundation is of two types:

- Monolithic. This type of foundation is a single tape-reinforced concrete.
- Prefabricated. It is a structure of individual elements, often made of reinforced concrete slabs. The reliability of such a foundation below monolithic more than 30%.

Strip foundation is used to frame houses with any load. For buildings with a large load to the heaving ground mounted deep-buried strip foundations. If the frame-panel house is small, lightweight cladding material and soil slabopuchinisty then laid melkozaglublenny strip foundation. Deeply recessed strip foundation is used subsequently as walls for the basement. The depth of the strip foundation deposition is also dependent on the depth of soil freezing. Lower basement mark placed 20-30 cm below the freezing level. Strip foundation is laid only during the warmer months with positive night-time temperatures on the surface of the soil.

The cross section of the foundation base is calculated based on the estimated load frame garden houses, the material and thickness of the facing walls, the presence / absence of groundwater, soil type lie.

Strip foundation is considered to be reliable and durable type of base frame house.

Advantages of strip foundation:

- Ability to use weighted structural elements of the house.
- Easy installation, the ability to manage without specialized heavy machinery.
- Ability to build frame houses under the key on uneven ground.
- Fitted basement, underground garage. Here, the foundation acts as the walls of the underground structure.

Weaknesses strip foundation:

- Significant material costs.
- Long-time construction period.
- The need for high-quality waterproofing.

The main advantage of the strip foundation - its longevity. However, durability, and affect the selected material.

The service life of the tape base:

- From Brick - up to 50 years;
- reinforced concrete blocks - up to 75 years;
- made of reinforced concrete - more than 150 years.

In the next article we will talk about the pile foundations, their strengths, weaknesses, construction technology.