Screw Piles: Optimal Installation Spacing for a Frame House

When building a frame house, choosing a foundation is a key consideration. Screw piles are increasingly used due to their practicality, quick installation, and reliability. However, to achieve maximum efficiency and ensure longevity, it is essential to correctly determine the spacing between the piles.

What are screw piles?

Screw piles are foundation elements shaped like steel pipes with blades at the end. They are screwed into the ground using specialized equipment. This method allows for efficient load distribution, which is especially important for frame houses with lightweight construction.

Why is it important to know the installation spacing?

Determining the spacing between screw piles affects:

• Structural stability;

• Load distribution;

• Resistance to soil movement;

• Foundation service life.

Incorrect spacing can lead to deformation, cracks, and other damage. Therefore, when designing a frame house, it is important to consider the recommendations for installing screw piles.

Recommended Spacing between Screw Piles

In practice, the spacing between screw piles depends on several factors:

• Structure type and weight;

• Soil conditions;

• Climatic factors.

For most frame houses, the optimal installation pitch ranges from 1 to 2 meters. Important points:

• For lightweight houses (up to 150 m²), it is recommended to install piles at intervals of 1.5-2 meters.

• For heavier structures (with a total area over 150 m²), the pitch can be reduced to 1-1.5 meters.

Calculating Spacing Based on Soil Conditions

Each plot of land has its own characteristics. Soils can vary: sandy, clayey, loamy, and others. Before installing piles, it is helpful to conduct a geological survey:

• Sandy soils have good bearing capacity, allowing piles to be installed at intervals of up to 2 meters.

• Clayey soils require more frequent installation—1-1.5 meters—to avoid precipitation. Also, if the site is located in an area with a high groundwater level, it is necessary to increase the number of piles or reduce the distance between them.

Climate factors also play a significant role:

• In areas with frequent frost and thawing, it is recommended to reduce the installation pitch.

• In more stable climatic conditions, a wider pitch between piles can be used.

Selecting piles for the project

When designing a foundation, it is important to consider not only the spacing but also the parameters of the piles themselves. Basic recommendations:

• For lightweight frame houses, choose piles with a diameter of 108-133 mm.

• For heavier structures, piles with a diameter of 159-219 mm are suitable.

Ensure that the piles are of the required length to securely screw into dense soil.

Existing standards and regulations

There are building codes that vary by region. In most cases, they are based on accepted calculations and specifications. It is recommended to contact specialists or designers for accurate data.

Advantages of Using Screw Piles

Screw piles offer several advantages:

• Quick and easy installation;

• No drilling or excavation required;

• Minimal environmental impact;

• Good resistance to ground movement.

Therefore, using screw piles can significantly simplify the process of building a frame house if the installation spacing is properly calculated.

When installing screw piles for a frame house, proper spacing is key. The recommended spacing of 1-2 meters will ensure the stability and durability of the structure. Remember to consider the soil type and climate conditions. Consulting with specialists will help avoid mistakes and ensure the reliability of your foundation.